State holders and UI State | Android Developers

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class="devsite-nav-text" tooltip><grant-uri-permission></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/instrumentation-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/instrumentation-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/instrumentation-element" ><span class="devsite-nav-text" tooltip><instrumentation></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/intent-filter-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/intent-filter-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/intent-filter-element" ><span class="devsite-nav-text" tooltip><intent-filter></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/layout-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/layout-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/layout-element" ><span class="devsite-nav-text" tooltip><layout></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/manifest-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/manifest-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/manifest-element" ><span class="devsite-nav-text" tooltip><manifest></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/meta-data-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/meta-data-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/meta-data-element" ><span class="devsite-nav-text" tooltip><meta-data></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/path-permission-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/path-permission-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/path-permission-element" ><span class="devsite-nav-text" tooltip><path-permission></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/permission-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/permission-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/permission-element" ><span class="devsite-nav-text" tooltip><permission></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/permission-group-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/permission-group-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/permission-group-element" ><span class="devsite-nav-text" tooltip><permission-group></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/permission-tree-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/permission-tree-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/permission-tree-element" ><span class="devsite-nav-text" tooltip><permission-tree></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/profileable-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/profileable-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/profileable-element" ><span class="devsite-nav-text" tooltip><profileable></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/property-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/property-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/property-element" ><span class="devsite-nav-text" tooltip><property></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/provider-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/provider-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/provider-element" ><span class="devsite-nav-text" tooltip><provider></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/queries-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/queries-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/queries-element" ><span class="devsite-nav-text" tooltip><queries></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/receiver-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/receiver-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/receiver-element" ><span class="devsite-nav-text" tooltip><receiver></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/service-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/service-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/service-element" ><span class="devsite-nav-text" tooltip><service></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/supports-gl-texture-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/supports-gl-texture-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/supports-gl-texture-element" ><span class="devsite-nav-text" tooltip><supports-gl-texture></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/supports-screens-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/supports-screens-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/supports-screens-element" ><span class="devsite-nav-text" tooltip><supports-screens></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/uses-configuration-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/uses-configuration-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/uses-configuration-element" ><span class="devsite-nav-text" tooltip><uses-configuration></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/uses-feature-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/uses-feature-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/uses-feature-element" ><span class="devsite-nav-text" tooltip><uses-feature></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/uses-library-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/uses-library-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/uses-library-element" ><span class="devsite-nav-text" tooltip><uses-library></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/uses-native-library-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/uses-native-library-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/uses-native-library-element" ><span class="devsite-nav-text" tooltip><uses-native-library></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/uses-permission-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/uses-permission-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/uses-permission-element" ><span class="devsite-nav-text" tooltip><uses-permission></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/uses-permission-sdk-23-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/uses-permission-sdk-23-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/uses-permission-sdk-23-element" ><span class="devsite-nav-text" tooltip><uses-permission-sdk-23></span></a></li><li class="devsite-nav-item"><a href="/guide/topics/manifest/uses-sdk-element" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/manifest/uses-sdk-element" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/manifest/uses-sdk-element" ><span class="devsite-nav-text" tooltip><uses-sdk></span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Devices</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Device compatibility</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/practices/compatibility" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/practices/compatibility" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/practices/compatibility" ><span class="devsite-nav-text" tooltip>About device compatibility</span></a></li><li class="devsite-nav-item"><a href="/guide/practices/screens_support" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/practices/screens_support" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/practices/screens_support" ><span class="devsite-nav-text" tooltip>About screen compatibility</span></a></li><li class="devsite-nav-item"><a href="/guide/practices/device-compatibility-mode" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/practices/device-compatibility-mode" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/practices/device-compatibility-mode" ><span class="devsite-nav-text" tooltip>Device compatibility mode</span></a></li><li class="devsite-nav-item"><a href="/training/multiscreen/screendensities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/multiscreen/screendensities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/multiscreen/screendensities" ><span class="devsite-nav-text" tooltip>Support different pixel densities</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Multiple APK support</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/google/play/publishing/multiple-apks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/publishing/multiple-apks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/publishing/multiple-apks" ><span class="devsite-nav-text" tooltip>About multiple APKs</span></a></li><li class="devsite-nav-item"><a href="/training/multiple-apks/api" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/multiple-apks/api" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/multiple-apks/api" ><span class="devsite-nav-text" tooltip>Create multiple APKs for different API levels</span></a></li><li class="devsite-nav-item"><a href="/training/multiple-apks/screensize" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/multiple-apks/screensize" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/multiple-apks/screensize" ><span class="devsite-nav-text" tooltip>Create multiple APKs for different screen sizes</span></a></li><li class="devsite-nav-item"><a href="/training/multiple-apks/texture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/multiple-apks/texture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/multiple-apks/texture" ><span class="devsite-nav-text" tooltip>Create multiple APKs for different GL textures</span></a></li><li class="devsite-nav-item"><a href="/training/multiple-apks/multiple" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/multiple-apks/multiple" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/multiple-apks/multiple" ><span class="devsite-nav-text" tooltip>Create multiple APKs with several dimensions</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/basics/supporting-devices/languages" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/basics/supporting-devices/languages" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/basics/supporting-devices/languages" ><span class="devsite-nav-text" tooltip>Support different languages and cultures</span></a></li><li class="devsite-nav-item"><a href="/training/basics/supporting-devices/platforms" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/basics/supporting-devices/platforms" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/basics/supporting-devices/platforms" ><span class="devsite-nav-text" tooltip>Support different platform versions</span></a></li><li class="devsite-nav-item"><a href="/google/play/filters" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/filters" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/filters" ><span class="devsite-nav-text" tooltip>Filters on Google Play</span></a></li><li class="devsite-nav-item"><a href="/google/play/requirements/64-bit" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/requirements/64-bit" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/requirements/64-bit" ><span class="devsite-nav-text" tooltip>64-bit Support</span></a></li><li class="devsite-nav-item"><a href="/guide/practices/page-sizes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/practices/page-sizes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/practices/page-sizes" ><span class="devsite-nav-text" tooltip>Support 16 KB page sizes</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Large screens — tablets, foldables, ChromeOS</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/large-screens" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens" ><span class="devsite-nav-text" tooltip>Get started with large screens</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Large screen ready</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/large-screens/tier_3_overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/tier_3_overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/tier_3_overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/configuration_and_continuity" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/configuration_and_continuity" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/configuration_and_continuity" ><span class="devsite-nav-text" tooltip>Configuration and continuity</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/camera_preview_and_media_projection" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/camera_preview_and_media_projection" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/camera_preview_and_media_projection" ><span class="devsite-nav-text" tooltip>Camera preview and media projection</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/multi-window_mode_and_multi-resume" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/multi-window_mode_and_multi-resume" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/multi-window_mode_and_multi-resume" ><span class="devsite-nav-text" tooltip>Multi-window mode and multi-resume</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/input-compatibility-large-screens" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/input-compatibility-large-screens" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/input-compatibility-large-screens" ><span class="devsite-nav-text" tooltip>Input compatibility on large screens</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Large screen optimized</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/large-screens/tier_2_overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/tier_2_overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/tier_2_overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/ux" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/ux" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/ux" ><span class="devsite-nav-text" tooltip>UX</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/migrate-to-responsive-layouts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/migrate-to-responsive-layouts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/migrate-to-responsive-layouts" ><span class="devsite-nav-text" tooltip>Migrate your UI to responsive layouts</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Large screen differentiated</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/large-screens/tier_1_overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/tier_1_overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/tier_1_overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/foldable-postures-and-states" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/foldable-postures-and-states" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/foldable-postures-and-states" ><span class="devsite-nav-text" tooltip>Foldable postures and states</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/create-a-note-taking-app" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/create-a-note-taking-app" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/create-a-note-taking-app" ><span class="devsite-nav-text" tooltip>Create a note-taking app</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/support-advanced-stylus-features" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/support-advanced-stylus-features" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/support-advanced-stylus-features" ><span class="devsite-nav-text" tooltip>Support advanced stylus features</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/guide/topics/large-screens/large-screen-cookbook" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/large-screens/large-screen-cookbook" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/large-screens/large-screen-cookbook" ><span class="devsite-nav-text" tooltip>Large screen cookbook</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/wearables" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/wearables" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/wearables" ><span class="devsite-nav-text" tooltip>Wear OS ⍈</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android TV</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv" ><span class="devsite-nav-text" tooltip>In this guide</span></a></li><li class="devsite-nav-item"><a href="/design/ui/tv" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /design/ui/tv" track-type="bookNav" track-name="click" track-metadata-eventdetail="/design/ui/tv" ><span class="devsite-nav-text" tooltip>Design TV UI ⍈</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Getting started</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/get-started" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started" ><span class="devsite-nav-text" tooltip>In this guide</span></a></li><li class="devsite-nav-item"><a href="/training/tv/get-started/create" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started/create" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started/create" ><span class="devsite-nav-text" tooltip>Create and run a TV app</span></a></li><li class="devsite-nav-item"><a href="/training/tv/get-started/hardware" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started/hardware" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started/hardware" ><span class="devsite-nav-text" tooltip>Handle TV hardware</span></a></li><li class="devsite-nav-item"><a href="/training/tv/get-started/controllers" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started/controllers" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started/controllers" ><span class="devsite-nav-text" tooltip>Manage TV controllers</span></a></li><li class="devsite-nav-item"><a href="/training/tv/get-started/onscreen-keyboard" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started/onscreen-keyboard" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started/onscreen-keyboard" ><span class="devsite-nav-text" tooltip>On-screen keyboard</span></a></li><li class="devsite-nav-item"><a href="/training/tv/get-started/navigation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started/navigation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started/navigation" ><span class="devsite-nav-text" tooltip>Create TV navigation</span></a></li><li class="devsite-nav-item"><a href="/training/tv/get-started/multitasking" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started/multitasking" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started/multitasking" ><span class="devsite-nav-text" tooltip>Multitasking on TV</span></a></li><li class="devsite-nav-item"><a href="/training/tv/get-started/google-tv" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/get-started/google-tv" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/get-started/google-tv" ><span class="devsite-nav-text" tooltip>Best practices for driving engagement on Google TV</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Build TV playback apps</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/playback" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback" ><span class="devsite-nav-text" tooltip>In this guide</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Building UI with Compose</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/playback/compose" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/compose" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/compose" ><span class="devsite-nav-text" tooltip>In this guide</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/compose/browse" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/compose/browse" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/compose/browse" ><span class="devsite-nav-text" tooltip>Create a catalog browser</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/compose/details" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/compose/details" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/compose/details" ><span class="devsite-nav-text" tooltip>Build a details screen</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Building UI with the Leanback UI toolkit (discouraged)</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/playback/leanback" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback" ><span class="devsite-nav-text" tooltip>In this guide</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/browse" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/browse" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/browse" ><span class="devsite-nav-text" tooltip>Create a catalog browser</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/card" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/card" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/card" ><span class="devsite-nav-text" tooltip>Provide a card view</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/details" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/details" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/details" ><span class="devsite-nav-text" tooltip>Build a details view</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/transport-controls" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/transport-controls" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/transport-controls" ><span class="devsite-nav-text" tooltip>Use transport controls</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/onboarding" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/onboarding" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/onboarding" ><span class="devsite-nav-text" tooltip>Introduce first-time users to your app</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/guided-step" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/guided-step" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/guided-step" ><span class="devsite-nav-text" tooltip>Add a guided step</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/layouts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/layouts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/layouts" ><span class="devsite-nav-text" tooltip>Build TV layouts</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/leanback/migrate-to-compose" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/leanback/migrate-to-compose" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/leanback/migrate-to-compose" ><span class="devsite-nav-text" tooltip>Migrate to Compose for TV</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/tv/playback/ambient-mode" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/ambient-mode" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/ambient-mode" ><span class="devsite-nav-text" tooltip>Ambient mode</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/controls" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/controls" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/controls" ><span class="devsite-nav-text" tooltip>Playback controls on TV</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/media-session" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/media-session" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/media-session" ><span class="devsite-nav-text" tooltip>Implement a media session</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/now-playing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/now-playing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/now-playing" ><span class="devsite-nav-text" tooltip>Background playback in a Now Playing card</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/audio-capabilities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/audio-capabilities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/audio-capabilities" ><span class="devsite-nav-text" tooltip>Audio capabilities</span></a></li><li class="devsite-nav-item"><a href="/training/tv/playback/framerate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/playback/framerate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/playback/framerate" ><span class="devsite-nav-text" tooltip>Match content frame rate</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Help users find content on TV</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/discovery" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery" ><span class="devsite-nav-text" tooltip>About finding TV content</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Recommend TV content</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/discovery/recommendations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/recommendations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/recommendations" ><span class="devsite-nav-text" tooltip>About recommending TV content</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/recommendations-channel" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/recommendations-channel" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/recommendations-channel" ><span class="devsite-nav-text" tooltip>Channels on the home screen</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/video-programs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/video-programs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/video-programs" ><span class="devsite-nav-text" tooltip>Video program attributes</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/audio-programs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/audio-programs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/audio-programs" ><span class="devsite-nav-text" tooltip>Audio program attributes</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/game-programs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/game-programs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/game-programs" ><span class="devsite-nav-text" tooltip>Game program attributes</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Watch Next</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/discovery/watch-next-add-programs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/watch-next-add-programs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/watch-next-add-programs" ><span class="devsite-nav-text" tooltip>Add programs</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/watch-next-programs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/watch-next-programs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/watch-next-programs" ><span class="devsite-nav-text" tooltip>Attributes</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/guidelines-app-developers" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/guidelines-app-developers" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/guidelines-app-developers" ><span class="devsite-nav-text" tooltip>Guidelines for app developers</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/guidelines-tv-providers" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/guidelines-tv-providers" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/guidelines-tv-providers" ><span class="devsite-nav-text" tooltip>Guidelines for TV providers</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/tv/discovery/preview-videos" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/preview-videos" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/preview-videos" ><span class="devsite-nav-text" tooltip>Preview videos</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/recommendations-row" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/recommendations-row" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/recommendations-row" ><span class="devsite-nav-text" tooltip>Recommendations in Android N and earlier</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/tv/discovery/searchable" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/searchable" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/searchable" ><span class="devsite-nav-text" tooltip>Make TV apps searchable</span></a></li><li class="devsite-nav-item"><a href="/training/tv/discovery/in-app-search" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/discovery/in-app-search" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/discovery/in-app-search" ><span class="devsite-nav-text" tooltip>Search within TV Apps</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Build TV games</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/games" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/games" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/games" ><span class="devsite-nav-text" tooltip>About TV games</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Build TV input services</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/tif" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/tif" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/tif" ><span class="devsite-nav-text" tooltip>About TV input services</span></a></li><li class="devsite-nav-item"><a href="/training/tv/tif/tvinput" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/tif/tvinput" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/tif/tvinput" ><span class="devsite-nav-text" tooltip>Develop a TV input service</span></a></li><li class="devsite-nav-item"><a href="/training/tv/tif/channel" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/tif/channel" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/tif/channel" ><span class="devsite-nav-text" tooltip>Work with channel data</span></a></li><li class="devsite-nav-item"><a href="/training/tv/tif/ui" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/tif/ui" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/tif/ui" ><span class="devsite-nav-text" tooltip>Manage TV user interaction</span></a></li><li class="devsite-nav-item"><a href="/training/tv/tif/time-shifting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/tif/time-shifting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/tif/time-shifting" ><span class="devsite-nav-text" tooltip>Support time-shifting</span></a></li><li class="devsite-nav-item"><a href="/training/tv/tif/content-recording" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/tif/content-recording" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/tif/content-recording" ><span class="devsite-nav-text" tooltip>Support content recording</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>TV Accessibility</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/tv/accessibility" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/accessibility" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/accessibility" ><span class="devsite-nav-text" tooltip>Accessibility best practices</span></a></li><li class="devsite-nav-item"><a href="/training/tv/accessibility/talkback" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/accessibility/talkback" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/accessibility/talkback" ><span class="devsite-nav-text" tooltip>TalkBack evaluation examples</span></a></li><li class="devsite-nav-item"><a href="/training/tv/accessibility/talkback-support" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/accessibility/talkback-support" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/accessibility/talkback-support" ><span class="devsite-nav-text" tooltip>Support TalkBack in TV apps</span></a></li><li class="devsite-nav-item"><a href="/training/tv/accessibility/system-caption-settings" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/accessibility/system-caption-settings" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/accessibility/system-caption-settings" ><span class="devsite-nav-text" tooltip>Adopt system caption settings</span></a></li><li class="devsite-nav-item"><a href="/training/tv/accessibility/custom-views" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/accessibility/custom-views" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/accessibility/custom-views" ><span class="devsite-nav-text" tooltip>Custom view accessibility support</span></a></li><li class="devsite-nav-item"><a href="/training/tv/accessibility/custom-views-sample" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/accessibility/custom-views-sample" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/accessibility/custom-views-sample" ><span class="devsite-nav-text" tooltip>Custom view accessibility sample</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/tv/publishing/checklist" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/publishing/checklist" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/publishing/checklist" ><span class="devsite-nav-text" tooltip>TV Apps checklist</span></a></li><li class="devsite-nav-item"><a href="/training/tv/publishing/distribute" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/tv/publishing/distribute" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/tv/publishing/distribute" ><span class="devsite-nav-text" tooltip>Distribute to Android TV</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Releases</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/tv/release/12" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /tv/release/12" track-type="bookNav" track-name="click" track-metadata-eventdetail="/tv/release/12" ><span class="devsite-nav-text" tooltip>Android 12 for TV</span></a></li><li class="devsite-nav-item"><a href="/tv/release/13" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /tv/release/13" track-type="bookNav" track-name="click" track-metadata-eventdetail="/tv/release/13" ><span class="devsite-nav-text" tooltip>Android 13 for TV</span></a></li><li class="devsite-nav-item"><a href="/tv/release/14" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /tv/release/14" track-type="bookNav" track-name="click" track-metadata-eventdetail="/tv/release/14" ><span class="devsite-nav-text" tooltip>Android 14 for TV</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android for Cars</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/cars" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars" ><span class="devsite-nav-text" tooltip>About Android for Cars</span></a></li><li class="devsite-nav-item devsite-nav-new"><a href="/training/cars/whats-new" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/whats-new" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/whats-new" ><span class="devsite-nav-text" tooltip>What's new</span><span class="devsite-nav-icon material-icons" data-icon="new" data-title="New!" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-external"><a href="/docs/quality-guidelines/car-app-quality" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/quality-guidelines/car-app-quality" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/quality-guidelines/car-app-quality" ><span class="devsite-nav-text" tooltip>Car app quality</span><span class="devsite-nav-icon material-icons" data-icon="external" data-title="External" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Build media apps for cars</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/cars/media" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/media" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/media" ><span class="devsite-nav-text" tooltip>Build media apps for cars</span></a></li><li class="devsite-nav-item"><a href="/training/cars/media/auto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/media/auto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/media/auto" ><span class="devsite-nav-text" tooltip>Add support for Android Auto</span></a></li><li class="devsite-nav-item"><a href="/training/cars/media/automotive-os" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/media/automotive-os" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/media/automotive-os" ><span class="devsite-nav-text" tooltip>Add support for Android Automotive OS</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/cars/messaging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/messaging" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/messaging" ><span class="devsite-nav-text" tooltip>Build messaging apps for Android Auto</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Build point of interest, internet of things, and navigation apps for cars</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/cars/apps" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/apps" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/apps" ><span class="devsite-nav-text" tooltip>Using the Android for Cars App Library</span></a></li><li class="devsite-nav-item"><a href="/training/cars/apps/poi" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/apps/poi" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/apps/poi" ><span class="devsite-nav-text" tooltip>Build point of interest apps for cars</span></a></li><li class="devsite-nav-item"><a href="/training/cars/apps/iot" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/apps/iot" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/apps/iot" ><span class="devsite-nav-text" tooltip>Build internet of things apps for cars</span></a></li><li class="devsite-nav-item"><a href="/training/cars/apps/navigation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/apps/navigation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/apps/navigation" ><span class="devsite-nav-text" tooltip>Build navigation apps for cars</span></a></li><li class="devsite-nav-item"><a href="/training/cars/apps/coarse-location" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/apps/coarse-location" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/apps/coarse-location" ><span class="devsite-nav-text" tooltip>Get coarse location</span></a></li><li class="devsite-nav-item"><a href="/training/cars/apps/auto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/apps/auto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/apps/auto" ><span class="devsite-nav-text" tooltip>Add support for Android Auto</span></a></li><li class="devsite-nav-item"><a href="/training/cars/apps/automotive-os" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/apps/automotive-os" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/apps/automotive-os" ><span class="devsite-nav-text" tooltip>Add support for Android Automotive OS</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Build parked apps for Android Automotive OS</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/cars/parked" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/parked" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/parked" ><span class="devsite-nav-text" tooltip>About parked apps</span></a></li><li class="devsite-nav-item"><a href="/training/cars/parked/video" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/parked/video" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/parked/video" ><span class="devsite-nav-text" tooltip>Build video apps</span></a></li><li class="devsite-nav-item"><a href="/training/cars/parked/games" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/parked/games" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/parked/games" ><span class="devsite-nav-text" tooltip>Build games</span></a></li><li class="devsite-nav-item"><a href="/training/cars/parked/browser" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/parked/browser" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/parked/browser" ><span class="devsite-nav-text" tooltip>Build browsers</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Test Android apps for cars</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/cars/testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/testing" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/training/cars/testing/dhu" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/testing/dhu" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/testing/dhu" ><span class="devsite-nav-text" tooltip>Test using the Desktop Head Unit</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Test using the Android Automotive OS emulator</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/cars/testing/emulator" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/testing/emulator" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/testing/emulator" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/training/cars/testing/emulator/distant-display" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/testing/emulator/distant-display" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/testing/emulator/distant-display" ><span class="devsite-nav-text" tooltip>Test using the distant display emulator</span></a></li><li class="devsite-nav-item"><a href="/training/cars/testing/emulator/configurable" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/testing/emulator/configurable" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/testing/emulator/configurable" ><span class="devsite-nav-text" tooltip>Test using the configurable emulator</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-preview"><a href="/training/cars/testing/aaos-on-pixel" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/testing/aaos-on-pixel" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/testing/aaos-on-pixel" ><span class="devsite-nav-text" tooltip>Test using Android Automotive OS on Pixel Tablet</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-preview"><a href="/training/cars/car-ready-mobile-apps" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/car-ready-mobile-apps" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/car-ready-mobile-apps" ><span class="devsite-nav-text" tooltip>Car ready mobile apps</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li><li class="devsite-nav-item"><a href="/training/cars/distribute" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/distribute" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/distribute" ><span class="devsite-nav-text" tooltip>Distribute Android apps for cars</span></a></li><li class="devsite-nav-item"><a href="/training/cars/google-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/google-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/google-services" ><span class="devsite-nav-text" tooltip>Google Play services for cars</span></a></li><li class="devsite-nav-item"><a href="/training/cars/notifications" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/cars/notifications" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/cars/notifications" ><span class="devsite-nav-text" tooltip>Notifications on Android Automotive OS</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>ChromeOS devices</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/chrome-os/intro" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /chrome-os/intro" track-type="bookNav" track-name="click" track-metadata-eventdetail="/chrome-os/intro" ><span class="devsite-nav-text" tooltip>About ChromeOS</span></a></li><li class="devsite-nav-item"><a href="/topic/arc" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc" ><span class="devsite-nav-text" tooltip>Building apps for ChromeOS</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/optimizing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/optimizing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/optimizing" ><span class="devsite-nav-text" tooltip>Optimizing Apps for ChromeOS</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/development-environment" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/development-environment" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/development-environment" ><span class="devsite-nav-text" tooltip>Preparing your development environment</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/manifest" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/manifest" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/manifest" ><span class="devsite-nav-text" tooltip>App Manifest Compatibility for Chromebooks</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/device-support" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/device-support" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/device-support" ><span class="devsite-nav-text" tooltip>ChromeOS Device Support for Apps</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/differences" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/differences" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/differences" ><span class="devsite-nav-text" tooltip>App Rendering Differences on Chromebooks</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/window-management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/window-management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/window-management" ><span class="devsite-nav-text" tooltip>Window management</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/adapting-games" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/adapting-games" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/adapting-games" ><span class="devsite-nav-text" tooltip>Adapting Games on ChromeOS</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/animation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/animation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/animation" ><span class="devsite-nav-text" tooltip>Smooth animation on ChromeOS</span></a></li><li class="devsite-nav-item"><a href="/topic/arc/tests" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/arc/tests" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/arc/tests" ><span class="devsite-nav-text" tooltip>Test Cases for Android Apps on ChromeOS</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Cross device SDK</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/connectivity/cross-device-sdk/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/connectivity/cross-device-sdk/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/connectivity/cross-device-sdk/overview" ><span class="devsite-nav-text" tooltip>About the Cross device SDK</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/connectivity/cross-device-sdk/get-started" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/connectivity/cross-device-sdk/get-started" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/connectivity/cross-device-sdk/get-started" ><span class="devsite-nav-text" tooltip>Get started</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/connectivity/cross-device-sdk/device-discovery" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/connectivity/cross-device-sdk/device-discovery" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/connectivity/cross-device-sdk/device-discovery" ><span class="devsite-nav-text" tooltip>Device discovery API</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/connectivity/cross-device-sdk/secure-connection" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/connectivity/cross-device-sdk/secure-connection" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/connectivity/cross-device-sdk/secure-connection" ><span class="devsite-nav-text" tooltip>Secure connection API</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/connectivity/cross-device-sdk/sessions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/connectivity/cross-device-sdk/sessions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/connectivity/cross-device-sdk/sessions" ><span class="devsite-nav-text" tooltip>Sessions API</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/connectivity/cross-device-sdk/testing-debugging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/connectivity/cross-device-sdk/testing-debugging" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/connectivity/cross-device-sdk/testing-debugging" ><span class="devsite-nav-text" tooltip>Test and debug</span></a></li><li class="devsite-nav-item"><a href="/reference/crossdevice/packages" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/crossdevice/packages" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/crossdevice/packages" ><span class="devsite-nav-text" tooltip>API Reference</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/develop/devices/assistant/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/devices/assistant/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/devices/assistant/overview" ><span class="devsite-nav-text" tooltip>Google Assistant ⍈</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android (Go edition)</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/androidgo" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo" ><span class="devsite-nav-text" tooltip>About Android Go edition</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/androidgo/develop" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo/develop" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo/develop" ><span class="devsite-nav-text" tooltip>Develop for Android (Go edition)</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/androidgo/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo/test" ><span class="devsite-nav-text" tooltip>Test Android Go apps</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Optimize for Android (Go edition)</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/androidgo/optimize" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo/optimize" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo/optimize" ><span class="devsite-nav-text" tooltip>Approach</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/androidgo/optimize-memory" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo/optimize-memory" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo/optimize-memory" ><span class="devsite-nav-text" tooltip>Optimize app memory</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/androidgo/optimize-startup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo/optimize-startup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo/optimize-startup" ><span class="devsite-nav-text" tooltip>Improve startup latency</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/androidgo/optimize-size" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo/optimize-size" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo/optimize-size" ><span class="devsite-nav-text" tooltip>Reduce app size</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/guide/topics/androidgo/best-practices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/androidgo/best-practices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/androidgo/best-practices" ><span class="devsite-nav-text" tooltip>Best practices</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>App architecture</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/architecture/intro" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/intro" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/intro" ><span class="devsite-nav-text" tooltip>Introduction</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Guide to app architecture</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/architecture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture" ><span class="devsite-nav-text" tooltip>About app architecture</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>UI layer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/architecture/ui-layer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/ui-layer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/ui-layer" ><span class="devsite-nav-text" tooltip>About the UI layer</span></a></li><li class="devsite-nav-item"><a href="/topic/architecture/ui-layer/events" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/ui-layer/events" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/ui-layer/events" ><span class="devsite-nav-text" tooltip>UI events</span></a></li><li class="devsite-nav-item"><a href="/topic/architecture/ui-layer/stateholders" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/ui-layer/stateholders" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/ui-layer/stateholders" ><span class="devsite-nav-text" tooltip>State holders and UI state</span></a></li><li class="devsite-nav-item"><a href="/topic/architecture/ui-layer/state-production" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/ui-layer/state-production" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/ui-layer/state-production" ><span class="devsite-nav-text" tooltip>State production</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/topic/architecture/domain-layer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/domain-layer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/domain-layer" ><span class="devsite-nav-text" tooltip>Domain layer</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Data layer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/architecture/data-layer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/data-layer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/data-layer" ><span class="devsite-nav-text" tooltip>About the data layer</span></a></li><li class="devsite-nav-item"><a href="/topic/architecture/data-layer/offline-first" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/data-layer/offline-first" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/data-layer/offline-first" ><span class="devsite-nav-text" tooltip>Offline first</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/topic/architecture/recommendations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/architecture/recommendations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/architecture/recommendations" ><span class="devsite-nav-text" tooltip>Architecture recommendations</span></a></li><li class="devsite-nav-item"><a href="/courses/pathways/android-architecture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /courses/pathways/android-architecture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/courses/pathways/android-architecture" ><span class="devsite-nav-text" tooltip>Learning pathway</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Modularization</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/modularization" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/modularization" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/modularization" ><span class="devsite-nav-text" tooltip>About modularization</span></a></li><li class="devsite-nav-item"><a href="/topic/modularization/patterns" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/modularization/patterns" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/modularization/patterns" ><span class="devsite-nav-text" tooltip>Common patterns</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Recipes</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/navigation-multi-module" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/navigation-multi-module" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/navigation-multi-module" ><span class="devsite-nav-text" tooltip>Navigation</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Architecture components</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>UI layer libraries</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>View binding</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/libraries/view-binding" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/view-binding" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/view-binding" ><span class="devsite-nav-text" tooltip>About view binding</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/view-binding/migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/view-binding/migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/view-binding/migration" ><span class="devsite-nav-text" tooltip>Migrate from Kotlin synthetics to view binding</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Data binding library</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/libraries/data-binding" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding" ><span class="devsite-nav-text" tooltip>About data binding</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/data-binding/start" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding/start" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding/start" ><span class="devsite-nav-text" tooltip>Get started</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/data-binding/expressions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding/expressions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding/expressions" ><span class="devsite-nav-text" tooltip>Layouts and binding expressions</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/data-binding/observability" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding/observability" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding/observability" ><span class="devsite-nav-text" tooltip>Work with observable data objects</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/data-binding/generated-binding" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding/generated-binding" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding/generated-binding" ><span class="devsite-nav-text" tooltip>Generated binding classes</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/data-binding/binding-adapters" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding/binding-adapters" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding/binding-adapters" ><span class="devsite-nav-text" tooltip>Binding adapters</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/data-binding/architecture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding/architecture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding/architecture" ><span class="devsite-nav-text" tooltip>Bind layout views to Architecture Components</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/data-binding/two-way" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/data-binding/two-way" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/data-binding/two-way" ><span class="devsite-nav-text" tooltip>Two-way data binding</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" 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tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Data layer libraries</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/libraries/architecture/datastore" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/datastore" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/architecture/datastore" ><span class="devsite-nav-text" tooltip>DataStore</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>WorkManager</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager" class="devsite-nav-title gc-analytics-event" 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track-metadata-eventdetail="/topic/libraries/architecture/workmanager/how-to/intermediate-progress" ><span class="devsite-nav-text" tooltip>Observing intermediate Worker progress</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager/how-to/chain-work" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/workmanager/how-to/chain-work" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/architecture/workmanager/how-to/chain-work" ><span class="devsite-nav-text" tooltip>Chaining work together</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager/how-to/testing-worker-impl" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/workmanager/how-to/testing-worker-impl" 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WorkManager</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager/advanced/worker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/workmanager/advanced/worker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/architecture/workmanager/advanced/worker" ><span class="devsite-nav-text" tooltip>Threading in Worker</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager/advanced/coroutineworker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/workmanager/advanced/coroutineworker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/architecture/workmanager/advanced/coroutineworker" ><span class="devsite-nav-text" tooltip>Threading in CoroutineWorker</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager/advanced/rxworker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/workmanager/advanced/rxworker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/architecture/workmanager/advanced/rxworker" ><span class="devsite-nav-text" tooltip>Threading in RxWorker</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager/advanced/listenableworker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/workmanager/advanced/listenableworker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/architecture/workmanager/advanced/listenableworker" ><span class="devsite-nav-text" 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class="devsite-nav-text" tooltip>Migrating from Firebase JobDispatcher</span></a></li><li class="devsite-nav-item"><a href="/topic/libraries/architecture/workmanager/migrating-gcm" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/architecture/workmanager/migrating-gcm" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/architecture/workmanager/migrating-gcm" ><span class="devsite-nav-text" tooltip>Migrating from GCMNetworkManager</span></a></li></ul></div></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>App entry points</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Activities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/components/activities/intro-activities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/intro-activities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/intro-activities" ><span class="devsite-nav-text" tooltip>Introduction to activities</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/activity-lifecycle" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/activity-lifecycle" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/activity-lifecycle" ><span class="devsite-nav-text" tooltip>The activity lifecycle</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/state-changes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/state-changes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/state-changes" ><span class="devsite-nav-text" tooltip>Activity state changes</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/testing" ><span class="devsite-nav-text" tooltip>Test your app's activities</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/tasks-and-back-stack" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/tasks-and-back-stack" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/tasks-and-back-stack" ><span class="devsite-nav-text" tooltip>Tasks and the back stack</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/process-lifecycle" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/process-lifecycle" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/process-lifecycle" ><span class="devsite-nav-text" tooltip>Processes and app lifecycle</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/parcelables-and-bundles" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/parcelables-and-bundles" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/parcelables-and-bundles" ><span class="devsite-nav-text" tooltip>Parcelables and bundles</span></a></li><li class="devsite-nav-item"><a href="/guide/components/loaders" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/loaders" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/loaders" ><span class="devsite-nav-text" tooltip>Loaders</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/recents" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/recents" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/recents" ><span class="devsite-nav-text" tooltip>Recents screen</span></a></li><li class="devsite-nav-item"><a href="/guide/components/activities/background-starts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/activities/background-starts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/activities/background-starts" ><span class="devsite-nav-text" tooltip>Restrictions on starting activities from the background</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>App shortcuts</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/ui/shortcuts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/ui/shortcuts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/ui/shortcuts" ><span class="devsite-nav-text" tooltip>About app shortcuts</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/ui/shortcuts/creating-shortcuts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/ui/shortcuts/creating-shortcuts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/ui/shortcuts/creating-shortcuts" ><span class="devsite-nav-text" tooltip>Create shortcuts</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/ui/shortcuts/adding-capabilities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/ui/shortcuts/adding-capabilities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/ui/shortcuts/adding-capabilities" ><span class="devsite-nav-text" tooltip>Add capabilities</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/ui/shortcuts/managing-shortcuts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/ui/shortcuts/managing-shortcuts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/ui/shortcuts/managing-shortcuts" ><span class="devsite-nav-text" tooltip>Manage shortcuts</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/ui/shortcuts/best-practices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/ui/shortcuts/best-practices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/ui/shortcuts/best-practices" ><span class="devsite-nav-text" tooltip>Best practices for shortcuts</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>App navigation</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/principles" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/principles" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/principles" ><span class="devsite-nav-text" tooltip>Principles of navigation</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Navigation component</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/navcontroller" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/navcontroller" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/navcontroller" ><span class="devsite-nav-text" tooltip>Navigation controller</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Design your navigation graph</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/design" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/dialog-destinations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/dialog-destinations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/dialog-destinations" ><span class="devsite-nav-text" tooltip>Dialog destinations</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/activity-destinations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/activity-destinations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/activity-destinations" ><span class="devsite-nav-text" tooltip>Activity destinations</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/nested-graphs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/nested-graphs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/nested-graphs" ><span class="devsite-nav-text" tooltip>Nested graphs</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/deep-link" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/deep-link" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/deep-link" ><span class="devsite-nav-text" tooltip>Deep links</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/add-new" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/add-new" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/add-new" ><span class="devsite-nav-text" tooltip>New destination types</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/type-safety" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/type-safety" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/type-safety" ><span class="devsite-nav-text" tooltip>Type safety</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/encapsulate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/encapsulate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/encapsulate" ><span class="devsite-nav-text" tooltip>Encapsulate your code</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/actions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/actions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/actions" ><span class="devsite-nav-text" tooltip>Global actions</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/kotlin-dsl" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/kotlin-dsl" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/kotlin-dsl" ><span class="devsite-nav-text" tooltip>Fragments and the Kotlin DSL</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/design/editor" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/design/editor" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/design/editor" ><span class="devsite-nav-text" tooltip>Use the Navigation editor</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Use your navigation graph</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/use-graph/navigate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/use-graph/navigate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/use-graph/navigate" ><span class="devsite-nav-text" tooltip>Navigate to a destination</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/use-graph/navoptions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/use-graph/navoptions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/use-graph/navoptions" ><span class="devsite-nav-text" tooltip>Navigate with options</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/use-graph/safe-args" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/use-graph/safe-args" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/use-graph/safe-args" ><span class="devsite-nav-text" tooltip>Safe args</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/use-graph/pass-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/use-graph/pass-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/use-graph/pass-data" ><span class="devsite-nav-text" tooltip>Pass data between destinations</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/use-graph/animate-transitions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/use-graph/animate-transitions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/use-graph/animate-transitions" ><span class="devsite-nav-text" tooltip>Animate transitions between destinations</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/use-graph/conditional" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/use-graph/conditional" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/use-graph/conditional" ><span class="devsite-nav-text" tooltip>Conditional navigation</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/use-graph/programmatic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/use-graph/programmatic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/use-graph/programmatic" ><span class="devsite-nav-text" tooltip>Interact programmatically with the Navigation component</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>The back stack</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/backstack" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/backstack" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/backstack" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/backstack/dialog" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/backstack/dialog" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/backstack/dialog" ><span class="devsite-nav-text" tooltip>Dialogs and the back stack</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/backstack/circular" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/backstack/circular" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/backstack/circular" ><span class="devsite-nav-text" tooltip>Circular navigation and the back stack</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/backstack/multi-back-stacks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/backstack/multi-back-stacks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/backstack/multi-back-stacks" ><span class="devsite-nav-text" tooltip>Multiple back stacks</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Integrations</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/integrations/feature-modules" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/integrations/feature-modules" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/integrations/feature-modules" ><span class="devsite-nav-text" tooltip>Navigate with feature modules</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/integrations/multi-module" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/integrations/multi-module" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/integrations/multi-module" ><span class="devsite-nav-text" tooltip>Multi-module projects</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/integrations/ui" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/integrations/ui" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/integrations/ui" ><span class="devsite-nav-text" tooltip>Connect UI components to NavController</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/guide/navigation/migrate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/migrate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/migrate" ><span class="devsite-nav-text" tooltip>Migrate to the Navigation component</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/testing" ><span class="devsite-nav-text" tooltip>Test navigation</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Custom back navigation</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/custom-back" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/custom-back" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/custom-back" ><span class="devsite-nav-text" tooltip>Custom back navigation</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/custom-back/predictive-back-gesture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/custom-back/predictive-back-gesture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/custom-back/predictive-back-gesture" ><span class="devsite-nav-text" tooltip>Predictive back gesture</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/custom-back/support-animations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/custom-back/support-animations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/custom-back/support-animations" ><span class="devsite-nav-text" tooltip>Add support for predictive back animations</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Responsive design</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/responsive/config-changes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/responsive/config-changes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/responsive/config-changes" ><span class="devsite-nav-text" tooltip>Handling configuration changes</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/responsive/form-factors" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/responsive/form-factors" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/responsive/form-factors" ><span class="devsite-nav-text" tooltip>Design for different form factors</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Swipe between views</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/navigation/advanced/swipe-view-2" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/advanced/swipe-view-2" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/advanced/swipe-view-2" ><span class="devsite-nav-text" tooltip>Swipe views using ViewPager2</span></a></li><li class="devsite-nav-item"><a href="/guide/navigation/advanced/swipe-view" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/navigation/advanced/swipe-view" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/navigation/advanced/swipe-view" ><span class="devsite-nav-text" tooltip>Swipe views using ViewPager</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Fragments</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/fragments" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments" ><span class="devsite-nav-text" tooltip>About fragments</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/create" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/create" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/create" ><span class="devsite-nav-text" tooltip>Create a fragment</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/fragmentmanager" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/fragmentmanager" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/fragmentmanager" ><span class="devsite-nav-text" tooltip>Fragment manager</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/transactions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/transactions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/transactions" ><span class="devsite-nav-text" tooltip>Fragment transactions</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/animate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/animate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/animate" ><span class="devsite-nav-text" tooltip>Animate transitions between fragments</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/lifecycle" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/lifecycle" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/lifecycle" ><span class="devsite-nav-text" tooltip>Fragment lifecycle</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/saving-state" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/saving-state" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/saving-state" ><span class="devsite-nav-text" tooltip>Saving state with fragments</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/communicate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/communicate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/communicate" ><span class="devsite-nav-text" tooltip>Communicate with fragments</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/appbar" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/appbar" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/appbar" ><span class="devsite-nav-text" tooltip>Working with the app bar</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/dialogs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/dialogs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/dialogs" ><span class="devsite-nav-text" tooltip>Displaying dialogs with DialogFragment</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/debugging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/debugging" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/debugging" ><span class="devsite-nav-text" tooltip>Debug your fragments</span></a></li><li class="devsite-nav-item"><a href="/guide/fragments/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/fragments/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/fragments/test" ><span class="devsite-nav-text" tooltip>Test your fragments</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>App links</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/app-links" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/app-links" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/app-links" ><span class="devsite-nav-text" tooltip>About app links</span></a></li><li class="devsite-nav-item"><a href="/training/app-links/deep-linking" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/app-links/deep-linking" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/app-links/deep-linking" ><span class="devsite-nav-text" tooltip>Enabling links to app content</span></a></li><li class="devsite-nav-item"><a href="/training/app-links/verify-android-applinks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/app-links/verify-android-applinks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/app-links/verify-android-applinks" ><span class="devsite-nav-text" tooltip>Verify app links</span></a></li><li class="devsite-nav-item"><a href="/training/app-links/instant-app-links" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/app-links/instant-app-links" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/app-links/instant-app-links" ><span class="devsite-nav-text" tooltip>Create app links for instant apps</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Interact with other apps</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/basics/intents" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/basics/intents" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/basics/intents" ><span class="devsite-nav-text" tooltip>About interacting with other apps</span></a></li><li class="devsite-nav-item"><a href="/guide/components/intents-filters" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/intents-filters" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/intents-filters" ><span class="devsite-nav-text" tooltip>About intents and intent filters</span></a></li><li class="devsite-nav-item"><a href="/guide/components/intents-common" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/components/intents-common" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/components/intents-common" ><span class="devsite-nav-text" tooltip>About common intents</span></a></li><li class="devsite-nav-item"><a href="/training/basics/intents/sending" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/basics/intents/sending" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/basics/intents/sending" ><span class="devsite-nav-text" tooltip>Send users to another app</span></a></li><li class="devsite-nav-item"><a href="/training/basics/intents/result" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/basics/intents/result" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/basics/intents/result" ><span class="devsite-nav-text" tooltip>Get a result from an activity</span></a></li><li class="devsite-nav-item"><a href="/training/basics/intents/filters" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/basics/intents/filters" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/basics/intents/filters" ><span class="devsite-nav-text" tooltip>Allow other apps to start your activity</span></a></li><li class="devsite-nav-item"><a href="/training/basics/intents/limit-play-loading" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/basics/intents/limit-play-loading" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/basics/intents/limit-play-loading" ><span class="devsite-nav-text" tooltip>Limit loading in on-device Android containers</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Package visibility</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/package-visibility" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/package-visibility" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/package-visibility" ><span class="devsite-nav-text" tooltip>About package visibility</span></a></li><li class="devsite-nav-item"><a href="/training/package-visibility/automatic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/package-visibility/automatic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/package-visibility/automatic" ><span class="devsite-nav-text" tooltip>Know which packages are visible automatically</span></a></li><li class="devsite-nav-item"><a href="/training/package-visibility/declaring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/package-visibility/declaring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/package-visibility/declaring" ><span class="devsite-nav-text" tooltip>Declare package visibility needs</span></a></li><li class="devsite-nav-item"><a href="/training/package-visibility/use-cases" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/package-visibility/use-cases" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/package-visibility/use-cases" ><span class="devsite-nav-text" tooltip>Fulfill common use cases</span></a></li><li class="devsite-nav-item"><a href="/training/package-visibility/testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/package-visibility/testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/package-visibility/testing" ><span class="devsite-nav-text" tooltip>Test package visibility</span></a></li></ul></div></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Dependency injection</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/dependency-injection" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection" ><span class="devsite-nav-text" tooltip>About dependency injection</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/manual" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/manual" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/manual" ><span class="devsite-nav-text" tooltip>Manual dependency injection</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/hilt-android" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/hilt-android" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/hilt-android" ><span class="devsite-nav-text" tooltip>Dependency injection with Hilt</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/hilt-multi-module" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/hilt-multi-module" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/hilt-multi-module" ><span class="devsite-nav-text" tooltip>Hilt in multi-module apps</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/hilt-jetpack" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/hilt-jetpack" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/hilt-jetpack" ><span class="devsite-nav-text" tooltip>Use Hilt with other Jetpack libraries</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/hilt-testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/hilt-testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/hilt-testing" ><span class="devsite-nav-text" tooltip>Hilt testing guide</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/hilt-cheatsheet" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/hilt-cheatsheet" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/hilt-cheatsheet" ><span class="devsite-nav-text" tooltip>Hilt and Dagger annotations cheat sheet</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Dagger</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/dependency-injection/dagger-basics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/dagger-basics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/dagger-basics" ><span class="devsite-nav-text" tooltip>Dagger basics</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/dagger-android" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/dagger-android" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/dagger-android" ><span class="devsite-nav-text" tooltip>Using Dagger in Android apps</span></a></li><li class="devsite-nav-item"><a href="/training/dependency-injection/dagger-multi-module" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/dependency-injection/dagger-multi-module" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/dependency-injection/dagger-multi-module" ><span class="devsite-nav-text" tooltip>Using Dagger in multi-module apps</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item"><a href="/topic/libraries/app-startup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/libraries/app-startup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/libraries/app-startup" ><span class="devsite-nav-text" tooltip>App Startup</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Google Play</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/google/play/billing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/billing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/billing" ><span class="devsite-nav-text" tooltip>Google Play Billing ⍈</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore" ><span class="devsite-nav-text" tooltip>Google Play Core libraries</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Engage SDK</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/playcore/engage/preview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/preview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/preview" ><span class="devsite-nav-text" tooltip>Engage SDK Developer Preview</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage" ><span class="devsite-nav-text" tooltip>About Engage SDK</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/watch" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/watch" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/watch" ><span class="devsite-nav-text" tooltip>Engage SDK Watch integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/listen" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/listen" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/listen" ><span class="devsite-nav-text" tooltip>Engage SDK Listen integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/read" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/read" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/read" ><span class="devsite-nav-text" tooltip>Engage SDK Read integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/shopping" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/shopping" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/shopping" ><span class="devsite-nav-text" tooltip>Engage SDK Shopping integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/food" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/food" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/food" ><span class="devsite-nav-text" tooltip>Engage SDK Food integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/social" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/social" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/social" ><span class="devsite-nav-text" tooltip>Engage SDK Social integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/travel" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/travel" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/travel" ><span class="devsite-nav-text" tooltip>Engage SDK Travel integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/healthandfitness" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/healthandfitness" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/healthandfitness" ><span class="devsite-nav-text" tooltip>Engage SDK Health & Fitness integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/otherverticals" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/otherverticals" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/otherverticals" ><span class="devsite-nav-text" tooltip>Engage SDK Other Verticals integration guide</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/workflow" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/workflow" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/workflow" ><span class="devsite-nav-text" tooltip>Engage SDK integration workflow</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/publish" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/publish" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/publish" ><span class="devsite-nav-text" tooltip>Engage SDK Cluster publishing guidelines</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/faq" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/faq" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/faq" ><span class="devsite-nav-text" tooltip>Engage SDK Frequently asked questions</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/release" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/release" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/release" ><span class="devsite-nav-text" tooltip>Engage SDK Release Notes</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/engage/samples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/engage/samples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/engage/samples" ><span class="devsite-nav-text" tooltip>Engage SDK Sample Apps</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Play Points</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/playpoints" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playpoints" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playpoints" ><span class="devsite-nav-text" tooltip>About Play Points</span></a></li><li class="devsite-nav-item"><a href="/guide/playpoints/create-products" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playpoints/create-products" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playpoints/create-products" ><span class="devsite-nav-text" tooltip>Create products and promotions</span></a></li><li class="devsite-nav-item"><a href="/guide/playpoints/deliver-items" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playpoints/deliver-items" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playpoints/deliver-items" ><span class="devsite-nav-text" tooltip>Detect and deliver products</span></a></li><li class="devsite-nav-item"><a href="/guide/playpoints/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playpoints/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playpoints/test" ><span class="devsite-nav-text" tooltip>Test products</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Play Asset Delivery</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/playcore/asset-delivery" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/asset-delivery" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/asset-delivery" ><span class="devsite-nav-text" tooltip>About Play Asset Delivery</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/asset-delivery/integrate-java" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/asset-delivery/integrate-java" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/asset-delivery/integrate-java" ><span class="devsite-nav-text" tooltip>Integrate asset delivery (Kotlin and Java)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/asset-delivery/integrate-native" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/asset-delivery/integrate-native" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/asset-delivery/integrate-native" ><span class="devsite-nav-text" tooltip>Integrate asset delivery (native)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/asset-delivery/integrate-unity" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/asset-delivery/integrate-unity" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/asset-delivery/integrate-unity" ><span class="devsite-nav-text" tooltip>Integrate asset delivery (Unity)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/asset-delivery/texture-compression" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/asset-delivery/texture-compression" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/asset-delivery/texture-compression" ><span class="devsite-nav-text" tooltip>Target texture compression formats</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/asset-delivery/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/asset-delivery/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/asset-delivery/test" ><span class="devsite-nav-text" tooltip>Test asset delivery</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Play Feature Delivery</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/playcore/feature-delivery" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/feature-delivery" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/feature-delivery" ><span class="devsite-nav-text" tooltip>About Play Feature Delivery</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/feature-delivery/install-time" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/feature-delivery/install-time" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/feature-delivery/install-time" ><span class="devsite-nav-text" tooltip>Configure install-time delivery</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/feature-delivery/conditional" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/feature-delivery/conditional" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/feature-delivery/conditional" ><span class="devsite-nav-text" tooltip>Configure conditional delivery</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/feature-delivery/on-demand" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/feature-delivery/on-demand" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/feature-delivery/on-demand" ><span class="devsite-nav-text" tooltip>Configure on-demand delivery</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/feature-delivery/ux-guidelines" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/feature-delivery/ux-guidelines" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/feature-delivery/ux-guidelines" ><span class="devsite-nav-text" tooltip>On-demand delivery best practices</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/feature-delivery/instant" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/feature-delivery/instant" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/feature-delivery/instant" ><span class="devsite-nav-text" tooltip>Configure instant delivery</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/feature-delivery/additional-resources" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/feature-delivery/additional-resources" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/feature-delivery/additional-resources" ><span class="devsite-nav-text" tooltip>Additional resources</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>In-app reviews</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/playcore/in-app-review" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-review" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-review" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-review/kotlin-java" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-review/kotlin-java" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-review/kotlin-java" ><span class="devsite-nav-text" tooltip>Integrate in-app reviews (Kotlin or Java)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-review/native" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-review/native" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-review/native" ><span class="devsite-nav-text" tooltip>Integrate in-app reviews (Native)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-review/unity" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-review/unity" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-review/unity" ><span class="devsite-nav-text" tooltip>Integrate in-app reviews (Unity)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-review/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-review/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-review/test" ><span class="devsite-nav-text" tooltip>Test in-app reviews</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>In-app updates</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/playcore/in-app-updates" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-updates" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-updates" ><span class="devsite-nav-text" tooltip>About in-app updates</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-updates/kotlin-java" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-updates/kotlin-java" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-updates/kotlin-java" ><span class="devsite-nav-text" tooltip>Support in-app updates (Kotlin or Java)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-updates/native" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-updates/native" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-updates/native" ><span class="devsite-nav-text" tooltip>Support in-app updates (Native)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-updates/unity" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-updates/unity" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-updates/unity" ><span class="devsite-nav-text" tooltip>Support in-app updates (Unity)</span></a></li><li class="devsite-nav-item"><a href="/guide/playcore/in-app-updates/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/playcore/in-app-updates/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/playcore/in-app-updates/test" ><span class="devsite-nav-text" tooltip>Test in-app updates</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable devsite-nav-beta"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Play as you Download</span><span class="devsite-nav-icon material-icons" data-icon="beta" data-title="Beta" aria-hidden="true"></span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/google/play/play-as-you-download" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/play-as-you-download" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/play-as-you-download" ><span class="devsite-nav-text" tooltip>About Play as you Download</span></a></li><li class="devsite-nav-item"><a href="/google/play/play-as-you-download/best-practices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/play-as-you-download/best-practices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/play-as-you-download/best-practices" ><span class="devsite-nav-text" tooltip>Best practices</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Google Play Instant</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/google-play-instant/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/overview" ><span class="devsite-nav-text" tooltip>About Google Play Instant</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Get started with instant apps</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/google-play-instant/getting-started/instant-enabled-app-bundle" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/getting-started/instant-enabled-app-bundle" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/getting-started/instant-enabled-app-bundle" ><span class="devsite-nav-text" tooltip>Create an instant-enabled app bundle</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/best-practices/apps" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/best-practices/apps" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/best-practices/apps" ><span class="devsite-nav-text" tooltip>UX best practices for apps</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Get started with instant games</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/google-play-instant/getting-started/game-instant-app" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/getting-started/game-instant-app" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/getting-started/game-instant-app" ><span class="devsite-nav-text" tooltip>About instant games</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/getting-started/game-unity-plugin" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/getting-started/game-unity-plugin" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/getting-started/game-unity-plugin" ><span class="devsite-nav-text" tooltip>Unity plugin</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/best-practices/games" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/best-practices/games" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/best-practices/games" ><span class="devsite-nav-text" tooltip>UX best practices for games</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/feature-module-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/feature-module-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/feature-module-migration" ><span class="devsite-nav-text" tooltip>Migrate to Android App Bundles</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/getting-started/cloud-delivery-assets" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/getting-started/cloud-delivery-assets" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/getting-started/cloud-delivery-assets" ><span class="devsite-nav-text" tooltip>Implement cloud delivery of assets</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/getting-started/support-play-games-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/getting-started/support-play-games-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/getting-started/support-play-games-services" ><span class="devsite-nav-text" tooltip>Support Google Play Games Services</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/instant-play-games" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/instant-play-games" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/instant-play-games" ><span class="devsite-nav-text" tooltip>Instant Play games</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/instant-play-games-checklist" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/instant-play-games-checklist" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/instant-play-games-checklist" ><span class="devsite-nav-text" tooltip>Instant Play games checklist</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/guides/reduce-module-size" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/guides/reduce-module-size" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/guides/reduce-module-size" ><span class="devsite-nav-text" tooltip>Reduce the size of your instant app or game</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/guides/advertising" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/guides/advertising" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/guides/advertising" ><span class="devsite-nav-text" tooltip>Add ads to your instant app or game</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/guides/multiple-entry-points" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/guides/multiple-entry-points" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/guides/multiple-entry-points" ><span class="devsite-nav-text" tooltip>Provide multiple entry points</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Integrate with Firebase</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/topic/google-play-instant/guides/analytics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/guides/analytics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/guides/analytics" ><span class="devsite-nav-text" tooltip>Add Google Analytics for Firebase to your instant app</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/guides/dynamic-links" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/guides/dynamic-links" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/guides/dynamic-links" ><span class="devsite-nav-text" tooltip>Use Firebase Dynamic Links with instant apps</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/tech-requirements" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/tech-requirements" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/tech-requirements" ><span class="devsite-nav-text" tooltip>Technical requirements checklist</span></a></li><li class="devsite-nav-item devsite-nav-external"><a href="https://play.google.com/about/other-programs/android-instant-apps/" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: https://play.google.com/about/other-programs/android-instant-apps/" track-type="bookNav" track-name="click" track-metadata-eventdetail="https://play.google.com/about/other-programs/android-instant-apps/" ><span class="devsite-nav-text" tooltip>Google Play Instant policy</span><span class="devsite-nav-icon material-icons" data-icon="external" data-title="External" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Resources</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-external"><a href="https://developers.google.com/android/reference/com/google/android/gms/instantapps/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: https://developers.google.com/android/reference/com/google/android/gms/instantapps/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="https://developers.google.com/android/reference/com/google/android/gms/instantapps/package-summary" ><span class="devsite-nav-text" tooltip>Reference</span><span class="devsite-nav-icon material-icons" data-icon="external" data-title="External" aria-hidden="true"></span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/samples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/samples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/samples" ><span class="devsite-nav-text" tooltip>Code samples</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/release-notes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/release-notes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/release-notes" ><span class="devsite-nav-text" tooltip>SDK release notes</span></a></li><li class="devsite-nav-item"><a href="/topic/google-play-instant/instant-app-intents" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/google-play-instant/instant-app-intents" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/google-play-instant/instant-app-intents" ><span class="devsite-nav-text" tooltip>Instant App Intents</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Support</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-external"><a href="https://issuetracker.google.com/issues?q=status:open%20componentid:316045" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: https://issuetracker.google.com/issues?q=status:open%20componentid:316045" track-type="bookNav" track-name="click" track-metadata-eventdetail="https://issuetracker.google.com/issues?q=status:open%20componentid:316045" ><span class="devsite-nav-text" tooltip>Known issues</span><span class="devsite-nav-icon material-icons" data-icon="external" data-title="External" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-external"><a href="https://stackoverflow.com/questions/tagged/android-instant-apps" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: https://stackoverflow.com/questions/tagged/android-instant-apps" track-type="bookNav" track-name="click" track-metadata-eventdetail="https://stackoverflow.com/questions/tagged/android-instant-apps" ><span class="devsite-nav-text" tooltip>StackOverflow</span><span class="devsite-nav-icon material-icons" data-icon="external" data-title="External" aria-hidden="true"></span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item"><a href="/google/play/developer-api" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/developer-api" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/developer-api" ><span class="devsite-nav-text" tooltip>Play Developer APIs</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Play Install Referrer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/google/play/installreferrer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/installreferrer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/installreferrer" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Play Install Referrer Library</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/google/play/installreferrer/library" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/installreferrer/library" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/installreferrer/library" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/reference/com/android/installreferrer/packages" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/com/android/installreferrer/packages" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/com/android/installreferrer/packages" ><span class="devsite-nav-text" tooltip>Reference ⍈</span></a></li><li class="devsite-nav-item"><a href="/google/play/installreferrer/release-notes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/installreferrer/release-notes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/installreferrer/release-notes" ><span class="devsite-nav-text" tooltip>Release notes</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/google/play/installreferrer/igetinstallreferrerservice" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/installreferrer/igetinstallreferrerservice" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/installreferrer/igetinstallreferrerservice" ><span class="devsite-nav-text" tooltip>Play Install Referrer API</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/google/play/integrity" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/integrity" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/integrity" ><span class="devsite-nav-text" tooltip>Play Integrity API ⍈</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Play Requirements</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/distribute/play-policies" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /distribute/play-policies" track-type="bookNav" track-name="click" track-metadata-eventdetail="/distribute/play-policies" ><span class="devsite-nav-text" tooltip>Play Policies ⍈</span></a></li><li class="devsite-nav-item"><a href="/google/play/requirements/target-sdk" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/requirements/target-sdk" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/requirements/target-sdk" ><span class="devsite-nav-text" tooltip>Meet the target API level requirement</span></a></li><li class="devsite-nav-item"><a href="/google/play/requirements/64-bit" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/requirements/64-bit" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/requirements/64-bit" ><span class="devsite-nav-text" tooltip>Support 64-bit architectures ⍈</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Application Licensing</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/google/play/licensing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/licensing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/licensing" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/google/play/licensing/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/licensing/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/licensing/overview" ><span class="devsite-nav-text" tooltip>Licensing Overview</span></a></li><li class="devsite-nav-item"><a href="/google/play/licensing/setting-up" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/licensing/setting-up" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/licensing/setting-up" ><span class="devsite-nav-text" tooltip>Setting Up for Licensing</span></a></li><li class="devsite-nav-item"><a href="/google/play/licensing/server-side-verification" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/licensing/server-side-verification" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/licensing/server-side-verification" ><span class="devsite-nav-text" tooltip>Adding Server-Side Verification</span></a></li><li class="devsite-nav-item"><a href="/google/play/licensing/client-side-verification" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/licensing/client-side-verification" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/licensing/client-side-verification" ><span class="devsite-nav-text" tooltip>Adding Client-Side Verification</span></a></li><li class="devsite-nav-item"><a href="/google/play/licensing/licensing-reference" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/licensing/licensing-reference" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/licensing/licensing-reference" ><span class="devsite-nav-text" tooltip>Licensing Reference</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/google/play/expansion-files" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/expansion-files" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/expansion-files" ><span class="devsite-nav-text" tooltip>APK Expansion Files</span></a></li><li class="devsite-nav-item"><a href="/google/play/app-updates" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/app-updates" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/app-updates" ><span class="devsite-nav-text" tooltip>App updates</span></a></li><li class="devsite-nav-item"><a href="/google/play/release-audience-restriction" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /google/play/release-audience-restriction" track-type="bookNav" track-name="click" track-metadata-eventdetail="/google/play/release-audience-restriction" ><span class="devsite-nav-text" tooltip>Release audience restriction</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Core areas</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/ui" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/ui" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/ui" ><span class="devsite-nav-text" tooltip>User interfaces ⍈</span></a></li><li class="devsite-nav-item"><a href="/media/audio-and-video" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /media/audio-and-video" track-type="bookNav" track-name="click" track-metadata-eventdetail="/media/audio-and-video" ><span class="devsite-nav-text" tooltip>Audio & video ⍈</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services" ><span class="devsite-nav-text" tooltip>Services ⍈</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks" ><span class="devsite-nav-text" tooltip>Background tasks ⍈</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/services/alarms" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/alarms" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/alarms" ><span class="devsite-nav-text" tooltip>Alarms ⍈</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Permissions</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/permissions/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/permissions/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/permissions/overview" ><span class="devsite-nav-text" tooltip>About permissions</span></a></li><li class="devsite-nav-item"><a href="/training/permissions/declaring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/permissions/declaring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/permissions/declaring" ><span class="devsite-nav-text" tooltip>Declare app permissions</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Request app permissions</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/permissions/requesting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/permissions/requesting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/permissions/requesting" ><span class="devsite-nav-text" tooltip>Request runtime permissions</span></a></li><li class="devsite-nav-item"><a href="/training/permissions/requesting-special" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/permissions/requesting-special" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/permissions/requesting-special" ><span class="devsite-nav-text" tooltip>Request special permissions</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/permissions/explaining-access" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/permissions/explaining-access" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/permissions/explaining-access" ><span class="devsite-nav-text" tooltip>Explain access to more sensitive information</span></a></li><li class="devsite-nav-item"><a href="/training/permissions/usage-notes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/permissions/usage-notes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/permissions/usage-notes" ><span class="devsite-nav-text" tooltip>App permissions best practices</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/permissions/default-handlers" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/permissions/default-handlers" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/permissions/default-handlers" ><span class="devsite-nav-text" tooltip>Permissions used only in default handlers</span></a></li><li class="devsite-nav-item"><a href="/training/permissions/restrict-interactions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/permissions/restrict-interactions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/permissions/restrict-interactions" ><span class="devsite-nav-text" tooltip>Restrict interactions with other apps</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/permissions/defining" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/permissions/defining" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/permissions/defining" ><span class="devsite-nav-text" tooltip>Define custom permissions</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>App data and files</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/data" ><span class="devsite-nav-text" tooltip>About app data and files</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage" ><span class="devsite-nav-text" tooltip>About storage</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/app-specific" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/app-specific" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/app-specific" ><span class="devsite-nav-text" tooltip>Save to app-specific storage</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Save to shared storage</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/data-storage/shared" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/shared" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/shared" ><span class="devsite-nav-text" tooltip>About shared storage</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/shared/media" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/shared/media" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/shared/media" ><span class="devsite-nav-text" tooltip>Media</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/shared/photopicker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/shared/photopicker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/shared/photopicker" ><span class="devsite-nav-text" tooltip>Photo picker</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/shared/documents-files" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/shared/documents-files" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/shared/documents-files" ><span class="devsite-nav-text" tooltip>Documents and other files</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/shared/datasets" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/shared/datasets" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/shared/datasets" ><span class="devsite-nav-text" tooltip>Datasets</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/data-storage/manage-all-files" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/manage-all-files" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/manage-all-files" ><span class="devsite-nav-text" tooltip>Manage all files on a storage device</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/shared-preferences" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/shared-preferences" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/shared-preferences" ><span class="devsite-nav-text" tooltip>Save key-value data</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Save data in a local database</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/data-storage/room" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room" ><span class="devsite-nav-text" tooltip>About the local database</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/defining-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/defining-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/defining-data" ><span class="devsite-nav-text" tooltip>Define data using entities</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/accessing-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/accessing-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/accessing-data" ><span class="devsite-nav-text" tooltip>Access data using DAOs</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/relationships" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/relationships" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/relationships" ><span class="devsite-nav-text" tooltip>Define relationships between objects</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/async-queries" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/async-queries" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/async-queries" ><span class="devsite-nav-text" tooltip>Write asynchronous DAO queries</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/creating-views" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/creating-views" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/creating-views" ><span class="devsite-nav-text" tooltip>Create views into a database</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/prepopulate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/prepopulate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/prepopulate" ><span class="devsite-nav-text" tooltip>Prepopulate your database</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/migrating-db-versions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/migrating-db-versions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/migrating-db-versions" ><span class="devsite-nav-text" tooltip>Migrate your database</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/testing-db" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/testing-db" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/testing-db" ><span class="devsite-nav-text" tooltip>Test and debug your database</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/referencing-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/referencing-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/referencing-data" ><span class="devsite-nav-text" tooltip>Reference complex data</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/sqlite-room-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/sqlite-room-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/sqlite-room-migration" ><span class="devsite-nav-text" tooltip>Migrate from SQLite to Room</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/room/room-kmp-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/room/room-kmp-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/room/room-kmp-migration" ><span class="devsite-nav-text" tooltip>Migrate to Room Kotlin Multiplatform</span></a></li><li class="devsite-nav-item"><a href="/training/data-storage/sqlite" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/sqlite" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/sqlite" ><span class="devsite-nav-text" tooltip>Save data using SQLite</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/data-storage/use-cases" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/data-storage/use-cases" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/data-storage/use-cases" ><span class="devsite-nav-text" tooltip>Storage use cases and best practices</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Sharing data</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/sharing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sharing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sharing" ><span class="devsite-nav-text" tooltip>About sharing data</span></a></li><li class="devsite-nav-item"><a href="/training/sharing/send" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sharing/send" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sharing/send" ><span class="devsite-nav-text" tooltip>Sending simple data to other apps</span></a></li><li class="devsite-nav-item"><a href="/training/sharing/receive" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sharing/receive" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sharing/receive" ><span class="devsite-nav-text" tooltip>Receiving simple data from other apps</span></a></li><li class="devsite-nav-item"><a href="/training/sharing/direct-share-targets" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sharing/direct-share-targets" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sharing/direct-share-targets" ><span class="devsite-nav-text" tooltip>Provide Direct Share targets</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Sharing files</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/secure-file-sharing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/secure-file-sharing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/secure-file-sharing" ><span class="devsite-nav-text" tooltip>About sharing files</span></a></li><li class="devsite-nav-item"><a href="/training/secure-file-sharing/setup-sharing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/secure-file-sharing/setup-sharing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/secure-file-sharing/setup-sharing" ><span class="devsite-nav-text" tooltip>Setting up file sharing</span></a></li><li class="devsite-nav-item"><a href="/training/secure-file-sharing/share-file" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/secure-file-sharing/share-file" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/secure-file-sharing/share-file" ><span class="devsite-nav-text" tooltip>Sharing a file</span></a></li><li class="devsite-nav-item"><a href="/training/secure-file-sharing/request-file" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/secure-file-sharing/request-file" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/secure-file-sharing/request-file" ><span class="devsite-nav-text" tooltip>Requesting a shared file</span></a></li><li class="devsite-nav-item"><a href="/training/secure-file-sharing/retrieve-info" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/secure-file-sharing/retrieve-info" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/secure-file-sharing/retrieve-info" ><span class="devsite-nav-text" tooltip>Retrieving file information</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Printing files</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/printing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/printing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/printing" ><span class="devsite-nav-text" tooltip>About printing</span></a></li><li class="devsite-nav-item"><a href="/training/printing/photos" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/printing/photos" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/printing/photos" ><span class="devsite-nav-text" tooltip>Printing photos</span></a></li><li class="devsite-nav-item"><a href="/training/printing/html-docs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/printing/html-docs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/printing/html-docs" ><span class="devsite-nav-text" tooltip>Printing HTML documents</span></a></li><li class="devsite-nav-item"><a href="/training/printing/custom-docs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/printing/custom-docs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/printing/custom-docs" ><span class="devsite-nav-text" tooltip>Printing custom documents</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Content providers</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/providers/content-providers" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/content-providers" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/content-providers" ><span class="devsite-nav-text" tooltip>About content providers</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/providers/content-provider-basics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/content-provider-basics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/content-provider-basics" ><span class="devsite-nav-text" tooltip>Content provider basics</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/providers/content-provider-creating" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/content-provider-creating" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/content-provider-creating" ><span class="devsite-nav-text" tooltip>Creating a content provider</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/providers/document-provider" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/document-provider" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/document-provider" ><span class="devsite-nav-text" tooltip>Open files using storage access framework</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/providers/create-document-provider" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/create-document-provider" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/create-document-provider" ><span class="devsite-nav-text" tooltip>Create a custom document provider</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/providers/cloud-media-provider" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/cloud-media-provider" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/cloud-media-provider" ><span class="devsite-nav-text" tooltip>Create a cloud media provider</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/guide/topics/data/install-location" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/data/install-location" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/data/install-location" ><span class="devsite-nav-text" tooltip>App install location</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>User data and identity</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/user-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/user-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/user-data" ><span class="devsite-nav-text" tooltip>About user data</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in" ><span class="devsite-nav-text" tooltip>Add sign-in workflow</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Credential Manager</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/sign-in/passkeys" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/passkeys" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/passkeys" ><span class="devsite-nav-text" tooltip>Sign in your user</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in/credential-manager" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/credential-manager" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/credential-manager" ><span class="devsite-nav-text" tooltip>Integrate with Sign in with Google</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in/fido2-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/fido2-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/fido2-migration" ><span class="devsite-nav-text" tooltip>Migrate from FIDO2</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in/smart-lock-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/smart-lock-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/smart-lock-migration" ><span class="devsite-nav-text" tooltip>Migrate from Smart Lock</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in/legacy-gsi-migration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/legacy-gsi-migration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/legacy-gsi-migration" ><span class="devsite-nav-text" tooltip>Migrate from legacy Google Sign-In</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in/credential-manager-webview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/credential-manager-webview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/credential-manager-webview" ><span class="devsite-nav-text" tooltip>Integrate with WebView</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in/credential-provider" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/credential-provider" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/credential-provider" ><span class="devsite-nav-text" tooltip>Integrate with your credential provider solution</span></a></li><li class="devsite-nav-item"><a href="/training/sign-in/privileged-apps" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/privileged-apps" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/privileged-apps" ><span class="devsite-nav-text" tooltip>Make calls on behalf of other parties for privileged apps</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Autofill framework</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/text/autofill" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/text/autofill" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/text/autofill" ><span class="devsite-nav-text" tooltip>About autofill</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/text/autofill-optimize" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/text/autofill-optimize" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/text/autofill-optimize" ><span class="devsite-nav-text" tooltip>Optimize your app for autofill</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/text/autofill-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/text/autofill-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/text/autofill-services" ><span class="devsite-nav-text" tooltip>Build autofill services</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/text/ime-autofill" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/text/ime-autofill" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/text/ime-autofill" ><span class="devsite-nav-text" tooltip>Integrate autofill with keyboards</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/sign-in/biometric-auth" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/sign-in/biometric-auth" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/sign-in/biometric-auth" ><span class="devsite-nav-text" tooltip>Show a biometric authentication dialog</span></a></li><li class="devsite-nav-item"><a href="/training/articles/app-set-id" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/articles/app-set-id" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/articles/app-set-id" ><span class="devsite-nav-text" tooltip>Identify developer-owned apps</span></a></li><li class="devsite-nav-item"><a href="/training/articles/ad-id" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/articles/ad-id" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/articles/ad-id" ><span class="devsite-nav-text" tooltip>Get a user-resettable advertising ID</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/providers/calendar-provider" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/calendar-provider" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/calendar-provider" ><span class="devsite-nav-text" tooltip>About the calendar provider</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Contacts provider</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/providers/contacts-provider" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/providers/contacts-provider" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/providers/contacts-provider" ><span class="devsite-nav-text" tooltip>About the contacts provider</span></a></li><li class="devsite-nav-item"><a href="/training/contacts-provider/retrieve-names" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/contacts-provider/retrieve-names" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/contacts-provider/retrieve-names" ><span class="devsite-nav-text" tooltip>Retrieving a list of contacts</span></a></li><li class="devsite-nav-item"><a href="/training/contacts-provider/retrieve-details" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/contacts-provider/retrieve-details" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/contacts-provider/retrieve-details" ><span class="devsite-nav-text" tooltip>Retrieving details for a contact</span></a></li><li class="devsite-nav-item"><a href="/training/contacts-provider/modify-data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/contacts-provider/modify-data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/contacts-provider/modify-data" ><span class="devsite-nav-text" tooltip>Modifying contacts using intents</span></a></li><li class="devsite-nav-item"><a href="/training/contacts-provider/display-contact-badge" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/contacts-provider/display-contact-badge" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/contacts-provider/display-contact-badge" ><span class="devsite-nav-text" tooltip>Displaying the quick contact badge</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/guide/topics/data/account-transfer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/data/account-transfer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/data/account-transfer" ><span class="devsite-nav-text" tooltip>Account transfer</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Data backup</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/data/backup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/data/backup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/data/backup" ><span class="devsite-nav-text" tooltip>About backup</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/data/autobackup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/data/autobackup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/data/autobackup" ><span class="devsite-nav-text" tooltip>Back up user data</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/data/keyvaluebackup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/data/keyvaluebackup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/data/keyvaluebackup" ><span class="devsite-nav-text" tooltip>Back up key-value pairs</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/data/testingbackup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/data/testingbackup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/data/testingbackup" ><span class="devsite-nav-text" tooltip>Test backup and restore</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/training/articles/user-data-ids" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/articles/user-data-ids" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/articles/user-data-ids" ><span class="devsite-nav-text" tooltip>Best practices for unique identifiers</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Remember and authenticate users</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/id-auth" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/id-auth" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/id-auth" ><span class="devsite-nav-text" tooltip>About authentication</span></a></li><li class="devsite-nav-item"><a href="/training/id-auth/identify" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/id-auth/identify" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/id-auth/identify" ><span class="devsite-nav-text" tooltip>Remember your user</span></a></li><li class="devsite-nav-item"><a href="/training/id-auth/authenticate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/id-auth/authenticate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/id-auth/authenticate" ><span class="devsite-nav-text" tooltip>Authenticate to OAuth2 services</span></a></li><li class="devsite-nav-item"><a href="/training/id-auth/custom_auth" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/id-auth/custom_auth" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/id-auth/custom_auth" ><span class="devsite-nav-text" tooltip>Create a custom account type</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item"><a href="/media/camera/get-started-with-camera" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /media/camera/get-started-with-camera" track-type="bookNav" track-name="click" track-metadata-eventdetail="/media/camera/get-started-with-camera" ><span class="devsite-nav-text" tooltip>Add camera capabilities to your app ⍈</span></a></li><li class="devsite-nav-item"><a href="/develop/sensors-and-location/location" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/sensors-and-location/location" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/sensors-and-location/location" ><span class="devsite-nav-text" tooltip>User location ⍈</span></a></li><li class="devsite-nav-item"><a href="/develop/sensors-and-location/sensors/sensors_overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/sensors-and-location/sensors/sensors_overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/sensors-and-location/sensors/sensors_overview" ><span class="devsite-nav-text" tooltip>Sensors ⍈</span></a></li><li class="devsite-nav-item"><a href="/develop/connectivity" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/connectivity" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/connectivity" ><span class="devsite-nav-text" tooltip>Connectivity ⍈</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Renderscript</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/renderscript/compute" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/compute" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/compute" ><span class="devsite-nav-text" tooltip>About Renderscript</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/advanced" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/advanced" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/advanced" ><span class="devsite-nav-text" tooltip>Advanced RenderScript</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Migrate from RenderScript</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/renderscript/migrate" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/migrate" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/migrate" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/migrate/migrate-gles" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/migrate/migrate-gles" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/migrate/migrate-gles" ><span class="devsite-nav-text" tooltip>Migrate scripts to OpenGL ES 3.1</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/migrate/migrate-vulkan" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/migrate/migrate-vulkan" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/migrate/migrate-vulkan" ><span class="devsite-nav-text" tooltip>Migrate scripts to Vulkan</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Runtime API reference</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/overview" ><span class="devsite-nav-text" tooltip>About Runtime API</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_value_types" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_value_types" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_value_types" ><span class="devsite-nav-text" tooltip>Numerical types</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_object_types" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_object_types" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_object_types" ><span class="devsite-nav-text" tooltip>Object types</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_convert" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_convert" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_convert" ><span class="devsite-nav-text" tooltip>Conversion functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_math" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_math" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_math" ><span class="devsite-nav-text" tooltip>Mathematical constants and functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_vector_math" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_vector_math" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_vector_math" ><span class="devsite-nav-text" tooltip>Vector math functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_matrix" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_matrix" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_matrix" ><span class="devsite-nav-text" tooltip>Matrix functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_quaternion" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_quaternion" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_quaternion" ><span class="devsite-nav-text" tooltip>Quaternion functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_atomic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_atomic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_atomic" ><span class="devsite-nav-text" tooltip>Atomic update functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_time" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_time" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_time" ><span class="devsite-nav-text" tooltip>Time functions and types</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_allocation_data" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_allocation_data" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_allocation_data" ><span class="devsite-nav-text" tooltip>Allocation data access functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_object_info" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_object_info" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_object_info" ><span class="devsite-nav-text" tooltip>Object characteristics functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_for_each" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_for_each" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_for_each" ><span class="devsite-nav-text" tooltip>Kernel invocation functions and types</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_io" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_io" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_io" ><span class="devsite-nav-text" tooltip>Input/output functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_debug" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_debug" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_debug" ><span class="devsite-nav-text" tooltip>Debugging functions</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference/rs_graphics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference/rs_graphics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference/rs_graphics" ><span class="devsite-nav-text" tooltip>Graphics functions and types</span></a></li><li class="devsite-nav-item"><a href="/guide/topics/renderscript/reference" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/topics/renderscript/reference" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/topics/renderscript/reference" ><span class="devsite-nav-text" tooltip>Index</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android app bundles</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/guide/app-bundle" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/app-bundle" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/app-bundle" ><span class="devsite-nav-text" tooltip>About app bundles</span></a></li><li class="devsite-nav-item"><a href="/guide/app-bundle/configure-base" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/app-bundle/configure-base" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/app-bundle/configure-base" ><span class="devsite-nav-text" tooltip>Configure the base module</span></a></li><li class="devsite-nav-item"><a href="/guide/app-bundle/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/app-bundle/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/app-bundle/test" ><span class="devsite-nav-text" tooltip>Build and test your app bundle</span></a></li><li class="devsite-nav-item"><a href="/guide/app-bundle/code-transparency" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/app-bundle/code-transparency" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/app-bundle/code-transparency" ><span class="devsite-nav-text" tooltip>Add code transparency</span></a></li><li class="devsite-nav-item"><a href="/guide/app-bundle/app-bundle-format" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/app-bundle/app-bundle-format" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/app-bundle/app-bundle-format" ><span class="devsite-nav-text" tooltip>About the app bundle format</span></a></li><li class="devsite-nav-item"><a href="/guide/app-bundle/faq" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /guide/app-bundle/faq" track-type="bookNav" track-name="click" track-metadata-eventdetail="/guide/app-bundle/faq" ><span class="devsite-nav-text" tooltip>Frequently asked questions</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Build for enterprise</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/work" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work" ><span class="devsite-nav-text" tooltip>About enterprise apps</span></a></li><li class="devsite-nav-item"><a href="/work/guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/guide" ><span class="devsite-nav-text" tooltip>Developer guide</span></a></li><li class="devsite-nav-item"><a href="/work/managed-profiles" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/managed-profiles" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/managed-profiles" ><span class="devsite-nav-text" tooltip>Work profiles</span></a></li><li class="devsite-nav-item"><a href="/work/managed-configurations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/managed-configurations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/managed-configurations" ><span class="devsite-nav-text" tooltip>Set up managed configurations</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>App feedback</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/work/app-feedback/overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/app-feedback/overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/app-feedback/overview" ><span class="devsite-nav-text" tooltip>Send app feedback to EMMs</span></a></li><li class="devsite-nav-item"><a href="/work/app-feedback/testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/app-feedback/testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/app-feedback/testing" ><span class="devsite-nav-text" tooltip>Test app feedback</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/work/contacts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/contacts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/contacts" ><span class="devsite-nav-text" tooltip>Work contacts</span></a></li><li class="devsite-nav-item"><a href="/work/device-management-policy" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/device-management-policy" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/device-management-policy" ><span class="devsite-nav-text" tooltip>Device management policies</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Device management</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/work/dpc/build-dpc" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/build-dpc" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/build-dpc" ><span class="devsite-nav-text" tooltip>Build a device policy controller</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Dedicated devices</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/work/dpc/dedicated-devices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/dedicated-devices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/dedicated-devices" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/work/dpc/dedicated-devices/lock-task-mode" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/dedicated-devices/lock-task-mode" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/dedicated-devices/lock-task-mode" ><span class="devsite-nav-text" tooltip>Lock task mode</span></a></li><li class="devsite-nav-item"><a href="/work/dpc/dedicated-devices/multiple-users" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/dedicated-devices/multiple-users" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/dedicated-devices/multiple-users" ><span class="devsite-nav-text" tooltip>Multiple users</span></a></li><li class="devsite-nav-item"><a href="/work/dpc/dedicated-devices/cookbook" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/dedicated-devices/cookbook" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/dedicated-devices/cookbook" ><span class="devsite-nav-text" tooltip>Cookbook</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/work/dpc/device-management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/device-management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/device-management" ><span class="devsite-nav-text" tooltip>Device control</span></a></li><li class="devsite-nav-item"><a href="/work/dpc/network-telephony" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/network-telephony" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/network-telephony" ><span class="devsite-nav-text" tooltip>Networking and telephony</span></a></li><li class="devsite-nav-item"><a href="/work/dpc/security" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/security" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/security" ><span class="devsite-nav-text" tooltip>Security</span></a></li><li class="devsite-nav-item"><a href="/work/dpc/system-updates" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/system-updates" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/system-updates" ><span class="devsite-nav-text" tooltip>System updates</span></a></li><li class="devsite-nav-item"><a href="/work/dpc/logging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/dpc/logging" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/dpc/logging" ><span class="devsite-nav-text" tooltip>Network activity logging</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Android versions</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/work/versions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions" ><span class="devsite-nav-text" tooltip>About the versions</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-15" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-15" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-15" ><span class="devsite-nav-text" tooltip>Android 15</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-14" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-14" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-14" ><span class="devsite-nav-text" tooltip>Android 14</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-13" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-13" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-13" ><span class="devsite-nav-text" tooltip>Android 13</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-12" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-12" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-12" ><span class="devsite-nav-text" tooltip>Android 12</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-11" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-11" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-11" ><span class="devsite-nav-text" tooltip>Android 11</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-10" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-10" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-10" ><span class="devsite-nav-text" tooltip>Android 10</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-9.0" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-9.0" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-9.0" ><span class="devsite-nav-text" tooltip>Android 9</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-8.0" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-8.0" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-8.0" ><span class="devsite-nav-text" tooltip>Android 8.0</span></a></li><li class="devsite-nav-item"><a href="/work/versions/android-7.0" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/versions/android-7.0" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/versions/android-7.0" ><span class="devsite-nav-text" tooltip>Android 7.0</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/work/device-admin" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /work/device-admin" track-type="bookNav" track-name="click" track-metadata-eventdetail="/work/device-admin" ><span class="devsite-nav-text" tooltip>Device administration</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable devsite-nav-accordion"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Best practices</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Testing</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing" ><span class="devsite-nav-text" tooltip>Test apps on Android</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Fundamentals</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/testing/fundamentals" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/fundamentals" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/fundamentals" ><span class="devsite-nav-text" tooltip>Fundamentals of testing Android apps</span></a></li><li class="devsite-nav-item"><a href="/training/testing/fundamentals/what-to-test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: 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track-metadata-eventdetail="/training/testing/instrumented-tests" ><span class="devsite-nav-text" tooltip>Build instrumented tests</span></a></li><li class="devsite-nav-item"><a href="/training/testing/instrumented-tests/stability" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/instrumented-tests/stability" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/instrumented-tests/stability" ><span class="devsite-nav-text" tooltip>Big test stability</span></a></li><li class="devsite-nav-item"><a href="/training/testing/instrumented-tests/performance" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/instrumented-tests/performance" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/instrumented-tests/performance" ><span 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tooltip>AndroidJUnitRunner</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>UI tests</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/testing/ui-tests" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/ui-tests" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/ui-tests" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/training/testing/ui-tests/behavior" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: 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class="devsite-nav-text" tooltip>Espresso</span></a></li><li class="devsite-nav-item"><a href="/training/testing/espresso/basics" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/espresso/basics" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/espresso/basics" ><span class="devsite-nav-text" tooltip>Espresso basics</span></a></li><li class="devsite-nav-item"><a href="/training/testing/espresso/setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/espresso/setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/espresso/setup" ><span class="devsite-nav-text" tooltip>Espresso setup instructions</span></a></li><li class="devsite-nav-item"><a href="/training/testing/espresso/cheat-sheet" class="devsite-nav-title gc-analytics-event" 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track-name="click" track-metadata-eventdetail="/training/testing/espresso/intents" ><span class="devsite-nav-text" tooltip>Espresso-Intents</span></a></li><li class="devsite-nav-item"><a href="/training/testing/espresso/lists" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/espresso/lists" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/espresso/lists" ><span class="devsite-nav-text" tooltip>Espresso lists</span></a></li><li class="devsite-nav-item"><a href="/training/testing/espresso/multiprocess" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/espresso/multiprocess" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/espresso/multiprocess" ><span class="devsite-nav-text" tooltip>Multiprocess Espresso</span></a></li><li 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pathname: /training/testing/espresso/accessibility-checking" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/espresso/accessibility-checking" ><span class="devsite-nav-text" tooltip>Accessibility checking</span></a></li><li class="devsite-nav-item"><a href="/training/testing/espresso/additional-resources" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/espresso/additional-resources" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/espresso/additional-resources" ><span class="devsite-nav-text" tooltip>Additional Resources for Espresso</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Testing different screen sizes</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/training/testing/different-screens" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/different-screens" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/different-screens" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/training/testing/different-screens/tools" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/different-screens/tools" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/different-screens/tools" ><span class="devsite-nav-text" tooltip>Libraries and tools</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div 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track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/other-components/services" ><span class="devsite-nav-text" tooltip>Test your service</span></a></li><li class="devsite-nav-item"><a href="/training/testing/other-components/ui-automator" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /training/testing/other-components/ui-automator" track-type="bookNav" track-name="click" track-metadata-eventdetail="/training/testing/other-components/ui-automator" ><span class="devsite-nav-text" tooltip>Write automated tests with UI Automator</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item"><a href="/topic/performance" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /topic/performance" track-type="bookNav" track-name="click" track-metadata-eventdetail="/topic/performance" ><span 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data-label="Book nav link, pathname: /health-and-fitness/guides/health-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/health-and-fitness/guides/health-services" ><span class="devsite-nav-text" tooltip>Health Services on Wear OS ⍈</span></a></li> </ul> <ul class="devsite-nav-list" menu="Essentials" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Gemini in Android Studio </span> </span> </li> <li class="devsite-nav-item"> <a href="/gemini-in-android" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Learn more" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Learn more </span> </a> </li> <li class="devsite-nav-item"> <a href="/studio" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Get Android Studio" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Get Android Studio </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Get started </span> </span> </li> <li class="devsite-nav-item"> <a href="/get-started/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Hello world" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Hello world </span> </a> </li> <li class="devsite-nav-item"> <a href="/courses" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Training courses" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Training courses </span> </a> </li> <li class="devsite-nav-item"> <a href="/get-started/codelabs" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Tutorials" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Tutorials </span> </a> </li> <li class="devsite-nav-item"> <a href="/kotlin" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Kotlin for Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Kotlin for Android </span> </a> </li> <li class="devsite-nav-item"> <a href="https://play.google.com/console/about/guides/monetize/" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Monetization with Play ↗️" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Monetization with Play ↗️ </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Extend by device </span> </span> </li> <li class="devsite-nav-item"> <a href="/adaptive-apps" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Adaptive apps" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Adaptive apps </span> </a> </li> <li class="devsite-nav-item"> <a href="/wear" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Wear OS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Wear OS </span> </a> </li> <li class="devsite-nav-item"> <a href="/cars" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Android for Cars" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android for Cars </span> </a> </li> <li class="devsite-nav-item"> <a href="/tv" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Android TV" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android TV </span> </a> </li> <li class="devsite-nav-item"> <a href="/chrome-os" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: ChromeOS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > ChromeOS </span> </a> </li> <li class="devsite-nav-item"> <a href="/multi-device-development" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Cross-device SDK" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Cross-device SDK </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Build by category </span> </span> </li> <li class="devsite-nav-item"> <a href="/games" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Games" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Games </span> </a> </li> <li class="devsite-nav-item"> <a href="/media" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Camera & Media" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Camera & Media </span> </a> </li> <li class="devsite-nav-item"> <a href="/social-and-messaging" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Social & messaging" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Social & messaging </span> </a> </li> <li class="devsite-nav-item"> <a href="/health-and-fitness" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Health & Fitness" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Health & Fitness </span> </a> </li> <li class="devsite-nav-item"> <a href="/productivity" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Productivity" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Productivity </span> </a> </li> <li class="devsite-nav-item"> <a href="/work/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Enterprise apps" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Enterprise apps </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Get the latest </span> </span> </li> <li class="devsite-nav-item"> <a href="/latest-updates" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Latest updates" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Latest updates </span> </a> </li> <li class="devsite-nav-item"> <a href="/latest-updates/experimental" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Experimental updates" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Experimental updates </span> </a> </li> <li class="devsite-nav-item"> <a href="/studio/preview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Android Studio preview" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android Studio preview </span> </a> </li> <li class="devsite-nav-item"> <a href="/jetpack/androidx/versions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Jetpack & Compose libraries" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Jetpack & Compose libraries </span> </a> </li> <li class="devsite-nav-item"> <a href="/training/wearables/versions/4" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Wear OS preview" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Wear OS preview </span> </a> </li> <li class="devsite-nav-item"> <a href="/design-for-safety/privacy-sandbox" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Privacy Sandbox" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Privacy Sandbox </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Design & Plan" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > UI Design </span> </span> </li> <li class="devsite-nav-item"> <a href="/design/ui" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Design for Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Design for Android </span> </a> </li> <li class="devsite-nav-item"> <a href="/design/ui/mobile" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Mobile" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Mobile </span> </a> </li> <li class="devsite-nav-item"> <a href="/design/ui/large-screens" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Large screens (e.g., tablets)" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Large screens (e.g., tablets) </span> </a> </li> <li class="devsite-nav-item"> <a href="/design/ui/widget" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Widgets" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Widgets </span> </a> </li> <li class="devsite-nav-item"> <a href="/design/ui/wear" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Wear OS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Wear OS </span> </a> </li> <li class="devsite-nav-item"> <a href="/design/ui/tv" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Android TV" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android TV </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Architecture </span> </span> </li> <li class="devsite-nav-item"> <a href="/topic/architecture/intro" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Introduction" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Introduction </span> </a> </li> <li class="devsite-nav-item"> <a href="/topic/libraries/view-binding" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Libraries" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Libraries </span> </a> </li> <li class="devsite-nav-item"> <a href="/guide/navigation/navigation-principles" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Navigation" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Navigation </span> </a> </li> <li class="devsite-nav-item"> <a href="/topic/modularization" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Modularization" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Modularization </span> </a> </li> <li class="devsite-nav-item"> <a href="/training/testing/fundamentals" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Testing" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Testing </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Quality </span> </span> </li> <li class="devsite-nav-item"> <a href="/quality" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Overview" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Overview </span> </a> </li> <li class="devsite-nav-item"> <a href="/quality/core-value" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Core value" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Core value </span> </a> </li> <li class="devsite-nav-item"> <a href="/quality/user-experience" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: User experience" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > User experience </span> </a> </li> <li class="devsite-nav-item"> <a href="/quality/technical" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Technical quality" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Technical quality </span> </a> </li> <li class="devsite-nav-item"> <a href="/quality/privacy-and-security" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Security" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Security </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Security </span> </span> </li> <li class="devsite-nav-item"> <a href="/security" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Overview" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Overview </span> </a> </li> <li class="devsite-nav-item"> <a href="/privacy-and-security/about" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Privacy" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Privacy </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Identity" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Identity </span> </a> </li> <li class="devsite-nav-item"> <a href="/security/fraud-prevention" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Fraud prevention" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Fraud prevention </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Build for Billions </span> </span> </li> <li class="devsite-nav-item"> <a href="/build-for-billions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Overview" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Overview </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/quality-guidelines/build-for-billions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: About new markets" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > About new markets </span> </a> </li> <li class="devsite-nav-item"> <a href="/guide/topics/androidgo" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Android (Go edition)" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android (Go edition) </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Develop" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Build AI experiences </span> </span> </li> <li class="devsite-nav-item"> <a href="/ai" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Get started" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Get started </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Core areas </span> </span> </li> <li class="devsite-nav-item"> <a href="/samples" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Samples" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Samples </span> </a> </li> <li class="devsite-nav-item"> <a href="/quick-guides" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Try Quick Guidesᵇᵉᵗᵃ" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Try Quick Guidesᵇᵉᵗᵃ </span> </a> </li> <li class="devsite-nav-item"> <a href="/develop/ui" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: User interfaces" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > User interfaces </span> </a> </li> <li class="devsite-nav-item"> <a href="/guide/topics/permissions/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Permissions" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Permissions </span> </a> </li> <li class="devsite-nav-item"> <a href="/develop/background-work" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Background work" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Background work </span> </a> </li> <li class="devsite-nav-item"> <a href="/guide/topics/data" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Data and files" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Data and files </span> </a> </li> <li class="devsite-nav-item"> <a href="/develop#core-areas" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: All core areas ⤵️" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > All core areas ⤵️ </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Tools and workflow </span> </span> </li> <li class="devsite-nav-item"> <a href="/studio/write" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Write and debug code" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Write and debug code </span> </a> </li> <li class="devsite-nav-item"> <a href="/build/gradle-build-overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Build projects" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Build projects </span> </a> </li> <li class="devsite-nav-item"> <a href="/training/testing" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Test your app" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Test your app </span> </a> </li> <li class="devsite-nav-item"> <a href="/topic/performance/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Performance" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Performance </span> </a> </li> <li class="devsite-nav-item"> <a href="/tools" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Command-line tools" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Command-line tools </span> </a> </li> <li class="devsite-nav-item"> <a href="/reference/tools/gradle-api" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Gradle plugin API" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Gradle plugin API </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Device tech </span> </span> </li> <li class="devsite-nav-item"> <a href="/guide/topics/large-screens/get-started-with-large-screens" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Large screens (e.g., tablets)" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Large screens (e.g., tablets) </span> </a> </li> <li class="devsite-nav-item"> <a href="/training/wearables" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Wear OS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span 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<section id="gc-wrapper"> <main role="main" class="devsite-main-content" has-book-nav has-sidebar > <div class="devsite-sidebar"> <div class="devsite-sidebar-content"> <devsite-toc class="devsite-nav" role="navigation" aria-label="On this page" depth="2" scrollbars ></devsite-toc> <devsite-recommendations-sidebar class="nocontent devsite-nav"> </devsite-recommendations-sidebar> </div> </div> <devsite-content> <article class="devsite-article"> <div class="devsite-article-meta nocontent" role="navigation"> <ul class="devsite-breadcrumb-list" aria-label="Breadcrumb"> <li class="devsite-breadcrumb-item "> <a href="https://developer.android.com/" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Android Developers" > Android Developers </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developer.android.com/develop" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="2" track-type="globalNav" track-name="breadcrumb" track-metadata-position="2" track-metadata-eventdetail="" > Develop </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developer.android.com/guide" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="3" track-type="globalNav" track-name="breadcrumb" track-metadata-position="3" track-metadata-eventdetail="" > Guides </a> </li> </ul> <devsite-thumb-rating position="header"> </devsite-thumb-rating> </div> <h1 class="devsite-page-title" tabindex="-1"> State holders and UI State </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <devsite-recommendations-dropdown class="nocontent"></devsite-recommendations-dropdown> <div class="devsite-article-body clearfix "> <p>The <a href="/topic/architecture/ui-layer">UI layer guide</a> discusses unidirectional data flow (UDF) as a means of producing and managing the UI State for the UI layer.</p> <figure id = "image-1"> <img src="/static/images/topic/architecture/ui-layer/udf.png" width = "60%" alt = "Data flows unidirectionally from the data layer to the UI." style="max-width:350px;margin:auto;margin-bottom:2em;display:block;"> <figcaption style="text-align:center"><b>Figure 1</b>: Unidirectional data flow</figcaption> </figure> <p>It also highlights the benefits of delegating UDF management to a special class called a state holder. You can implement a state holder either through a <code translate="no" dir="ltr">ViewModel</code> or a plain class. This document takes a closer look at state holders and the role they play in the UI layer.</p> <p>At the end of this document, you should have an understanding of how to manage application state in the UI layer; that is the UI state production pipeline. You should be able to understand and know the following:</p> <ul> <li>Understand the types of UI state that exist in the UI layer.</li> <li>Understand the types of logic that operate on those UI states in the UI layer.</li> <li>Know how to choose the appropriate implementation of a state holder, such as a <code translate="no" dir="ltr">ViewModel</code> or a simple class.</li> </ul> <div class="video-wrapper-full-width" style="width:75%;max-width:700px;margin-left:auto;margin-right:auto"> <iframe class="devsite-embedded-youtube-video" data-video-id="pCX9wvu-Bq0" data-autohide="1" data-showinfo="0" allowfullscreen> </iframe> </div> <h2 id="elements-ui" data-text="Elements of the UI state production pipeline" tabindex="-1">Elements of the UI state production pipeline</h2> <p>The UI state and the logic that produces it defines the UI layer.</p> <h3 id="ui-state" data-text="UI state" tabindex="-1">UI state</h3> <p><a href="/topic/architecture/ui-layer#define-ui-state">UI state</a> is the property that describes the UI. There are two types of UI state:</p> <ul> <li><strong>Screen UI state</strong> is <em>what</em> you need to display on the screen. For example, a <code translate="no" dir="ltr">NewsUiState</code> class can contain the news articles and other information needed to render the UI. This state is usually connected with other layers of the hierarchy because it contains app data.</li> <li><strong>UI element state</strong> refers to properties intrinsic to UI elements that influence how they are rendered. A UI element may be shown or hidden and may have a certain font, font size, or font color. In Android Views, the View manages this state itself as it is inherently stateful, exposing methods to modify or query its state. An example of this are the <a href="/reference/android/widget/TextView#getText()"><code translate="no" dir="ltr">get</code></a> and <a href="/reference/android/widget/TextView#setText(java.lang.CharSequence)"><code translate="no" dir="ltr">set</code></a> methods of the <a href="/reference/android/widget/TextView"><code translate="no" dir="ltr">TextView</code></a> class for its text. In Jetpack Compose, the state is external to the composable, and you can even hoist it out of the immediate vicinity of the composable into the calling composable function or a state holder. An example of this is <a href="/reference/kotlin/androidx/compose/material/ScaffoldState"><code translate="no" dir="ltr">ScaffoldState</code></a> for the <a href="/reference/kotlin/androidx/compose/material/package-summary#Scaffold(androidx.compose.ui.Modifier,androidx.compose.material.ScaffoldState,kotlin.Function0,kotlin.Function0,kotlin.Function1,kotlin.Function0,androidx.compose.material.FabPosition,kotlin.Boolean,kotlin.Function1,kotlin.Boolean,androidx.compose.ui.graphics.Shape,androidx.compose.ui.unit.Dp,androidx.compose.ui.graphics.Color,androidx.compose.ui.graphics.Color,androidx.compose.ui.graphics.Color,androidx.compose.ui.graphics.Color,androidx.compose.ui.graphics.Color,kotlin.Function1)"><code translate="no" dir="ltr">Scaffold</code></a> composable.</li> </ul> <h3 id="logic" data-text="Logic" tabindex="-1">Logic</h3> <p>UI state is not a static property, as application data and user events cause UI state to change over time. Logic determines the specifics of the change, including what parts of the UI state have changed, why it's changed, and when it should change.</p> <figure id = "image-2"> <img src="/static/images/topic/architecture/ui-layer/logic.png" width = "50%" alt = "Logic produces UI state" style="max-width:350px;margin:auto;margin-bottom:2em;display:block;"> <figcaption style="text-align:center"><b>Figure 2</b>: Logic as the producer of UI state</figcaption> </figure> <p>Logic in an application can be either business logic or UI logic:</p> <ul> <li><strong>Business logic</strong> is the implementation of product requirements for app data. For example, bookmarking an article in a news reader app when the user taps the button. This logic to save a bookmark to a file or database is usually placed in the domain or data layers. The state holder usually delegates this logic to those layers by calling the methods they expose.</li> <li><strong>UI logic</strong> is related to <em>how</em> to display UI state on the screen. For example, obtaining the right search bar hint when the user has selected a category, scrolling to a particular item in a list, or the navigation logic to a particular screen when the user clicks a button.</li> </ul> <h2 id="android-lifecycle" data-text="Android lifecycle and the types of UI state and logic" tabindex="-1">Android lifecycle and the types of UI state and logic</h2> <p>The UI layer has two parts: one dependent and the other independent of the UI lifecycle. This separation determines the data sources available to each part, and therefore requires different types of UI state and logic.</p> <ul> <li><strong>UI lifecycle independent</strong>: This part of the UI layer deals with the data producing layers of the app (data or domain layers) and is defined by business logic. Lifecycle, configuration changes, and <code translate="no" dir="ltr">Activity</code> recreation in the UI may affect if the UI state production pipeline is active, but do not affect the validity of the data produced.</li> <li><strong>UI lifecycle dependent</strong>: This part of the UI layer deals with UI logic, and is directly influenced by lifecycle or configuration changes. These changes directly affect the validity of the sources of data read within it, and as a result its state can only change when its lifecycle is active. Examples of this include runtime permissions and getting configuration dependent resources like localized strings.</li> </ul> <p>The above can be summarized with the table below:</p> <table> <thead> <tr> <th>UI Lifecycle independent</th> <th>UI Lifecycle dependent</th> </tr> </thead> <tr> <td>Business logic</td> <td>UI Logic</td> </tr> <tr> <td>Screen UI state</td> <td></td> </tr> </table> <h3 id="ui-state-production-pipeline" data-text="The UI state production pipeline" tabindex="-1">The UI state production pipeline</h3> <p>The UI state production pipeline refers to the steps undertaken to produce UI state. These steps comprise the application of the types of logic defined earlier, and are completely dependent on the needs of your UI. <em>Some UIs may benefit from both UI Lifecycle independent and UI Lifecycle dependent parts of the pipeline, either, or neither</em>.</p> <p>That is, the following permutations of the UI layer pipeline are valid:</p> <ul> <li><p>UI state produced and managed by the UI itself. For example, a simple, reusable basic counter:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-nd">@Composable</span> <span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">Counter</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// The UI state is managed by the UI itself</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">var</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">count</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">by</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">remember</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">mutableStateOf</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-m">0</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">Row</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">Button</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">onClick</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">++</span><span class="devsite-syntax-n">count</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">})</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">Text</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">text</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-s">"Increment"</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">Button</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">onClick</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">--</span><span class="devsite-syntax-n">count</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">})</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">Text</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">text</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-s">"Decrement"</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code></li> <li><p>UI logic → UI. For example, showing or hiding a button that allows a user to jump to the top of a list.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-nd">@Composable</span> <span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">ContactsList</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">contacts</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">List<Contact></span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">listState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">rememberLazyListState</span><span class="devsite-syntax-p">()</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">isAtTopOfList</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">by</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">remember</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">derivedStateOf</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">listState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">firstVisibleItemIndex</span><span class="devsite-syntax-w"> < </span><span class="devsite-syntax-m">3</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Create the LazyColumn with the lazyListState</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">...</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Show or hide the button (UI logic) based on the list scroll position</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">AnimatedVisibility</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">visible</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">!</span><span class="devsite-syntax-n">isAtTopOfList</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">ScrollToTopButton</span><span class="devsite-syntax-p">()</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code></li> <li><p>Business logic → UI. A UI element displaying the current user's photo on the screen.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-nd">@Composable</span> <span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">UserProfileScreen</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">UserProfileViewModel</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">hiltViewModel</span><span class="devsite-syntax-p">())</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Read screen UI state from the business logic state holder</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">uiState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">by</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">uiState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">collectAsStateWithLifecycle</span><span class="devsite-syntax-p">()</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Call on the UserAvatar Composable to display the photo</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">UserAvatar</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">picture</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">uiState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">profilePicture</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code></li> <li><p>Business logic → UI logic → UI. A UI element that scrolls to display the right information on the screen for a given UI state.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-nd">@Composable</span> <span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">ContactsList</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">ContactsViewModel</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">hiltViewModel</span><span class="devsite-syntax-p">())</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Read screen UI state from the business logic state holder</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">uiState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">by</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">uiState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">collectAsStateWithLifecycle</span><span class="devsite-syntax-p">()</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">contacts</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">uiState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">contacts</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">deepLinkedContact</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">uiState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">deepLinkedContact</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">listState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">rememberLazyListState</span><span class="devsite-syntax-p">()</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Create the LazyColumn with the lazyListState</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">...</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Perform UI logic that depends on information from business logic</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">if</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">deepLinkedContact</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">!=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kc">null</span><span class="devsite-syntax-w"> && </span><span class="devsite-syntax-n">contacts</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">isNotEmpty</span><span class="devsite-syntax-p">())</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">LaunchedEffect</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">listState</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">deepLinkedContact</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">contacts</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">deepLinkedContactIndex</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">contacts</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">indexOf</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">deepLinkedContact</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">if</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">deepLinkedContactIndex</span><span class="devsite-syntax-w"> </span>><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-m">0</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Scroll to deep linked item</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">listState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">animateScrollToItem</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">deepLinkedContactIndex</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code></li> </ul> <p>In the case where both kinds of logic are applied to the UI state production pipeline, <strong>business logic must always be applied before UI logic</strong>. Trying to apply business logic after UI logic would imply that the business logic depends on UI logic. The following sections cover why this is a problem through an in depth look at different logic types and their state holders.</p> <figure id = "image-3"> <img src="/static/images/topic/architecture/ui-layer/logic-hierarchy.png" width = "50%" alt = "Data flows from the data producing layer to the UI" style="max-width:350px;margin:auto;margin-bottom:2em;display:block;"> <figcaption style="text-align:center"><b>Figure 3</b>: Application of logic in the UI layer</figcaption> </figure> <h2 id="state-holders" data-text="State holders and their responsibilities" tabindex="-1">State holders and their responsibilities</h2> <p>The responsibility of a state holder is to store state so the app can read it. In cases where logic is needed, it acts as an intermediary and provides access to the data sources that host the required logic. In this way, the state holder delegates logic to the appropriate data source.</p> <p>This produces the following benefits:</p> <ul> <li><strong>Simple UIs</strong>: The UI just binds its state.</li> <li><strong>Maintainability</strong>: The logic defined in the state holder can be iterated upon without changing the UI itself.</li> <li><strong>Testability</strong>: The UI and its state production logic can be tested independently.</li> <li><strong>Readability</strong>: Readers of the code can clearly see differences between UI presentation code and UI state production code.</li> </ul> <p>Regardless of its size or scope, every UI element has a 1:1 relationship with its corresponding state holder. Furthermore, a state holder must be able to accept and process any user action that might result in a UI state change and must produce the ensuing state change.</p> <aside class="note"><strong>Note:</strong><span> State holders are not strictly necessary. Simple UIs may host their logic inline with their presentation code.</span></aside> <h3 id="types-state" data-text="Types of state holders" tabindex="-1">Types of state holders</h3> <p>Similar to the kinds of UI state and logic, there are two types of state holders in the UI layer defined by their relationship to the UI lifecycle:</p> <ul> <li>The business logic state holder.</li> <li>The UI logic state holder.</li> </ul> <p>The following sections take a closer look at the types of state holders, starting with the business logic state holder.</p> <aside class="note"><strong>Note:</strong><span> If a UI logic state holder depends on information from the data or domain layers, you should pass that information to it from a business logic state holder. This is because the business logic state holder is longer lived than the UI logic state holder since it is independent of the UI lifecycle.</span></aside> <h2 id="business-logic" data-text="Business logic and its state holder" tabindex="-1">Business logic and its state holder</h2> <p>Business logic state holders process user events and transform data from the data or domain layers to screen UI state. In order to provide an optimal user experience when considering the Android lifecycle and app configuration changes, state holders that utilize business logic should have the following properties:</p> <table> <thead> <tr> <th>Property</th> <th>Detail</th> </tr> </thead> <tr> <td>Produces UI State</td> <td>Business logic state holders are responsible for producing the UI state for their UIs. This UI state is often the result of processing user events and reading data from the domain and data layers.</td> </tr> <tr> <td>Retained through activity recreation</td> <td>Business logic state holders retain their state and state processing pipelines across <code translate="no" dir="ltr">Activity</code> recreation, helping provide a seamless user experience. In the cases where the state holder is unable to be retained and is recreated (usually after <a href="/guide/components/activities/process-lifecycle">process death</a>), the state holder must be able to easily recreate its last state to ensure a consistent user experience.</td> </tr> <tr> <td>Possess long lived state</td> <td>Business logic state holders are often used to manage state for navigation destinations. As a result, they often preserve their state across navigation changes until they are removed from the navigation graph.</td> </tr> <tr> <td>Is unique to its UI and is not reusable</td> <td>Business logic state holders typically produce state for a certain app function, for example a <code translate="no" dir="ltr">TaskEditViewModel</code> or a <code translate="no" dir="ltr">TaskListViewModel</code>, and therefore only ever applicable to that app function. The same state holder can support these app functions across different form factors. For example, mobile, TV, and tablet versions of the app may reuse the same business logic state holder.</td> </tr> </table> <aside class="note"><strong>Note:</strong><span> The business logic state holder is typically implemented with a <a href="/topic/libraries/architecture/viewmodel?gclid=CjwKCAjwv-GUBhAzEiwASUMm4jGM5Xw9jQrNGwjdH6dspujLXTiJAfDYLC3bOuur7QFYn1tRnojAKRoCqE0QAvD_BwE&gclsrc=aw.ds"><code translate="no" dir="ltr">ViewModel</code></a> instance because <code translate="no" dir="ltr">ViewModel</code> instances support many of the features outlined above, particularly surviving <code translate="no" dir="ltr">Activity</code> recreation.</span></aside> <p>For example consider the author navigation destination in the <a href="https://github.com/android/nowinandroid" class="external">"Now in Android</a>" app:</p> <figure id = "image-4"> <img src="/static/images/topic/architecture/ui-layer/nia-author.png" alt = "The Now in Android app demonstrates how a navigation destination representing a major app function ought to have its own unique business logic state holder." style="max-width:250px;margin:auto;margin-bottom:2em;display:block;"> <figcaption style="text-align:center"><b>Figure 4</b>: The Now in Android app</figcaption> </figure> <p>Acting as the business logic state holder, the <a href="https://github.com/android/nowinandroid/blob/main/feature-author/src/main/java/com/google/samples/apps/nowinandroid/feature/author/AuthorViewModel.kt" class="external"><code translate="no" dir="ltr">AuthorViewModel</code></a> produces the UI state in this case:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-nd">@HiltViewModel</span> <span class="devsite-syntax-kd">class</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nc">AuthorViewModel</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nd">@Inject</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">constructor</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">savedStateHandle</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">SavedStateHandle</span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">private</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">authorsRepository</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">AuthorsRepository</span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">newsRepository</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">NewsRepository</span> <span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">ViewModel</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">uiState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">StateFlow<AuthorScreenUiState></span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">…</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Business logic</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">followAuthor</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">followed</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kt">Boolean</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-err">…</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code> <p>Notice that the <code translate="no" dir="ltr">AuthorViewModel</code> has the attributes outlined previously:</p> <table> <thead> <tr> <th>Property</th> <th>Detail</th> </tr> </thead> <tr> <td>Produces <code translate="no" dir="ltr">AuthorScreenUiState</code></td> <td>The <code translate="no" dir="ltr">AuthorViewModel</code> reads data from the <code translate="no" dir="ltr">AuthorsRepository</code> and <code translate="no" dir="ltr">NewsRepository</code> and uses that data to produce <code translate="no" dir="ltr">AuthorScreenUiState</code>. It also applies business logic when the user wants to follow or unfollow an <code translate="no" dir="ltr">Author</code> by delegating to the <code translate="no" dir="ltr">AuthorsRepository</code>.</td> </tr> <tr> <td>Has access to the data layer</td> <td>An instance of <code translate="no" dir="ltr">AuthorsRepository</code> and <code translate="no" dir="ltr">NewsRepository</code> are passed to it in its constructor, allowing it to implement the business logic of following an <code translate="no" dir="ltr">Author</code>.</td> </tr> <tr> <td>Survives <code translate="no" dir="ltr">Activity</code> recreation</td> <td>Because it is implemented with a <a href="/topic/libraries/architecture/viewmodel?gclid=Cj0KCQjw4uaUBhC8ARIsANUuDjWnr2D2RL5QDLrOFZBl4TQSF7AF4hkuEEtsz1EV3fbPN-6DD4PLH1MaAvF1EALw_wcB&gclsrc=aw.ds"><code translate="no" dir="ltr">ViewModel</code></a>, it will be retained across quick <code translate="no" dir="ltr">Activity</code> recreation. In the case of process death, the <a href="/topic/libraries/architecture/viewmodel-savedstate"><code translate="no" dir="ltr">SavedStateHandle</code></a> object can be read from to provide the minimum amount of information required to restore the UI state from the data layer.</td> </tr> <tr> <td>Possesses long lived state</td> <td>The <code translate="no" dir="ltr">ViewModel</code> is scoped to the navigation graph, therefore unless the author destination is removed from the nav graph, the UI state in the <code translate="no" dir="ltr">uiState</code> <code translate="no" dir="ltr">StateFlow</code> remains in memory. The use of the <code translate="no" dir="ltr">StateFlow</code> also adds the benefit of making the application of the business logic that produces the state lazy because state is only produced if there is a collector of the UI state.</td> </tr> <tr> <td>Is unique to its UI</td> <td>The <code translate="no" dir="ltr">AuthorViewModel</code> is only applicable to the author navigation destination and cannot be reused anywhere else. If there is any business logic that is reused across navigation destinations, that business logic must be encapsulated in a data- or domain-layer-scoped component.</td> </tr> </table> <aside class="warning"><strong>Warning:</strong><span> Don't pass ViewModel instances down to other composable functions. Doing so couples the composable function with the ViewModel type, making it less reusable and harder to test and preview. Also, there would be no clear single source of truth (SSOT) that manages the ViewModel instance. Passing the ViewModel down allows multiple composables to call ViewModel functions and modify its state, making bugs harder to debug. Instead, follow UDF best practices and pass down just the necessary state. Likewise, pass the propagating events up until they reach the ViewModel's composable SSOT. That is the SSOT which handles the event and calls the corresponding ViewModel methods.</span></aside> <h3 id="viewmodel-as" data-text="The ViewModel as a business logic state holder" tabindex="-1">The ViewModel as a business logic state holder</h3> <p><strong>The benefits of ViewModels</strong> in Android development make them suitable for providing access to the business logic and preparing the application data for presentation on the screen. These benefits include the following:</p> <ul> <li>Operations triggered by ViewModels survive configuration changes.</li> <li>Integration with <a href="/jetpack/compose/navigation">Navigation</a>: <ul> <li>Navigation caches ViewModels while the screen is on the back stack. This is important to have your previously loaded data instantly available when you return to your destination. This is something more difficult to do with a state holder that follows the lifecycle of the composable screen.</li> <li>The ViewModel is also cleared when the destination is popped off the back stack, ensuring that your state is automatically cleaned up. This is different from listening for the composable disposal that can happen for multiple reasons such as going to a new screen, due to a configuration change, or other reasons.</li> </ul></li> <li>Integration with other Jetpack libraries such as <a href="/training/dependency-injection/hilt-jetpack#compose">Hilt</a>.</li> </ul> <aside class="note"><strong>Note:</strong><span> If <code translate="no" dir="ltr">ViewModel</code> benefits don't apply to your use case or you do things in a different way you can move ViewModel's responsibilities into plain state holder classes.</span></aside> <h2 id="ui-logic" data-text="UI logic and its state holder" tabindex="-1">UI logic and its state holder</h2> <p>UI logic is logic that operates on data that the UI itself provides. This may be on UI elements' state, or on UI data sources like the permissions API or <a href="/reference/android/content/res/Resources"><code translate="no" dir="ltr">Resources</code></a>. State holders that utilize UI logic typically have the following properties:</p> <ul> <li><strong>Produces UI state and manages UI elements state</strong>.</li> <li><strong>Does not survive <code translate="no" dir="ltr">Activity</code> recreation</strong>: State holders that are hosted in UI logic are often dependent on data sources from the UI itself, and attempting to retain this information across configuration changes more often than not causes a memory leak. If state holders need data to persist across configuration changes, they need to delegate to another component better suited to surviving <code translate="no" dir="ltr">Activity</code> recreation. In Jetpack Compose for example, Composable UI element states created with <code translate="no" dir="ltr">remembered</code> functions often delegate to <code translate="no" dir="ltr">rememberSaveable</code> to preserve state across <code translate="no" dir="ltr">Activity</code> recreation. Examples of such functions include <code translate="no" dir="ltr">rememberScaffoldState()</code> and <code translate="no" dir="ltr">rememberLazyListState()</code>.</li> <li><strong>Has references to UI scoped sources of data</strong>: Sources of data like lifecycle APIs and Resources can safely be referenced and read as the UI logic state holder has the same lifecycle as the UI.</li> <li><strong>Is reusable across multiple UIs</strong>: Different instances of the same UI logic state holder may be reused in different parts of the app. For example, a state holder for managing user input events for a chip group may be used on a search page for filter chips, and also for the "to" field for receivers of an email.</li> </ul> <p>The UI logic state holder is typically implemented with a plain class. This is because the UI itself is responsible for the creation of the UI logic state holder and the UI logic state holder has the same lifecycle as the UI itself. In Jetpack Compose for example, the state holder is part of the Composition and follows the Composition's lifecycle.</p> <aside class="note"><strong>Note:</strong><span> Plain class state holders are used when UI logic is complex enough to be moved out of the UI. Otherwise, UI logic can be implemented inline in the UI.</span></aside> <p>This above can be illustrated in the following example in the <a href="https://github.com/android/nowinandroid" class="external">Now in Android sample</a>:</p> <figure id = "image-5"> <img src="/static/images/topic/architecture/ui-layer/nia-home.png" width = "60%" alt = "Now in Android uses a plain class state holder to manage UI logic" style="max-width:250px;margin:auto;margin-bottom:2em;display:block;"> <figcaption style="text-align:center"><b>Figure 5</b>: The Now in Android sample app</figcaption> </figure> <p>The Now in Android sample shows either a bottom app bar or a navigation rail for its navigation depending on the device's screen size. Smaller screens use the bottom app bar, and larger screens the navigation rail.</p> <p>Since the logic for deciding the appropriate navigation UI element used in the <code translate="no" dir="ltr">NiaApp</code> composable function doesn't depend on business logic, it can be managed by a plain class state holder called <a href="https://github.com/android/nowinandroid/blob/main/app/src/main/java/com/google/samples/apps/nowinandroid/ui/NiaAppState.kt" class="external"><code translate="no" dir="ltr">NiaAppState</code></a>:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-nd">@Stable</span> <span class="devsite-syntax-kd">class</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nc">NiaAppState</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">navController</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">NavHostController</span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">windowSizeClass</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">WindowSizeClass</span> <span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// UI logic</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">shouldShowBottomBar</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kt">Boolean</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">get</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">windowSizeClass</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">widthSizeClass</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">==</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">WindowWidthSizeClass</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">Compact</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">||</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">windowSizeClass</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">heightSizeClass</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">==</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">WindowHeightSizeClass</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">Compact</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// UI logic</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">shouldShowNavRail</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kt">Boolean</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">get</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">!</span><span class="devsite-syntax-n">shouldShowBottomBar</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// UI State</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">currentDestination</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">NavDestination?</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-nd">@Composable</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-k">get</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">navController</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">currentBackStackEntryAsState</span><span class="devsite-syntax-p">().</span><span class="devsite-syntax-na">value</span><span class="devsite-syntax-o">?.</span><span class="devsite-syntax-na">destination</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// UI logic</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">navigate</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">destination</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">NiaNavigationDestination</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">route</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kt">String?</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kc">null</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code> <p>In the above example, the following details regarding the <code translate="no" dir="ltr">NiaAppState</code> are notable:</p> <ul> <li><strong>Does not survive <code translate="no" dir="ltr">Activity</code> recreation</strong>: <code translate="no" dir="ltr">NiaAppState</code> is <code translate="no" dir="ltr">remembered</code> in the Composition by creating it with a Composable function <a href="https://github.com/android/nowinandroid/blob/main/app/src/main/java/com/google/samples/apps/nowinandroid/ui/NiaAppState.kt#L46"><code translate="no" dir="ltr">rememberNiaAppState</code></a> following Compose naming conventions. After the <code translate="no" dir="ltr">Activity</code> is recreated, the prior instance is lost and a new instance is created with all its dependencies passed in, appropriate for the new configuration of the recreated <code translate="no" dir="ltr">Activity</code>. These dependencies may be new or restored from the previous configuration. For example, <code translate="no" dir="ltr">rememberNavController()</code> is used in the <code translate="no" dir="ltr">NiaAppState</code> constructor and it delegates to <code translate="no" dir="ltr">rememberSaveable</code> to preserve state across <code translate="no" dir="ltr">Activity</code> recreation.</li> <li><strong>Has references to UI scoped sources of data</strong>: References to the <code translate="no" dir="ltr">navigationController</code>, <code translate="no" dir="ltr">Resources</code> and other similar lifecycle scoped types can be safely held in <code translate="no" dir="ltr">NiaAppState</code> as they share the same lifecycle scope.</li> </ul> <aside class="note"><strong>Note:</strong><span> Plain state holder classes are recommended for reusable pieces of UI like search bars or chip groups. You shouldn't use ViewModels in this case because they are best used for managing state for navigation destinations and access to business logic.</span></aside> <h2 id="choose-viewmodel" data-text="Choose between a ViewModel and plain class for a state holder" tabindex="-1">Choose between a ViewModel and plain class for a state holder</h2> <p>From the sections above, choosing between a <code translate="no" dir="ltr">ViewModel</code> and a plain class state holder comes down to the logic applied to the UI state and the sources of data the logic operates on.</p> <aside class="note"><strong>Note:</strong><span> Most applications elect to perform UI logic inline in the UI itself that could otherwise be placed in plain class state holders. This is fine for simple cases, but for other situations, you can improve readability by pulling the logic out to a plain class state holder.</span></aside> <p>In summary, the diagram below shows the position of state holders in the UI State production pipeline:</p> <figure id = "image-6"> <img src="/static/images/topic/architecture/ui-layer/stateholder-hierarchy.png" width = "60%" alt = "Data flows from the data producing layer to the UI layer" style="max-width:350px;margin:auto;margin-bottom:2em;display:block;"> <figcaption style="text-align:center"><b>Figure 6</b>: State holders in the UI State production pipeline. Arrows mean data flow.</figcaption> </figure> <p><strong>Ultimately, you should produce UI state using state holders closest to where it is consumed</strong>. Less formally, you should hold state as low as possible while maintaining proper ownership. If you need access to business logic and need the UI state to persist as long as a screen may be navigated to, even across <code translate="no" dir="ltr">Activity</code> recreation, a <a href="/topic/libraries/architecture/viewmodel?gclid=Cj0KCQjw4uaUBhC8ARIsANUuDjWnr2D2RL5QDLrOFZBl4TQSF7AF4hkuEEtsz1EV3fbPN-6DD4PLH1MaAvF1EALw_wcB&gclsrc=aw.ds"><code translate="no" dir="ltr">ViewModel</code></a> is a great choice for your business logic state holder implementation. For shorter-lived UI state and UI logic, a plain class whose lifecycle is dependent solely on the UI should suffice.</p> <h2 id="dependencies" data-text="State holders are compoundable" tabindex="-1">State holders are compoundable</h2> <p>State holders can depend on other state holders as long as the dependencies have an equal or shorter lifetime. Examples of this are:</p> <ul> <li>a UI logic state holder can depend on another UI logic state holder.</li> <li>a screen level state holder can depend on a UI logic state holder.</li> </ul> <p>The following code snippet shows how <a href="/reference/kotlin/androidx/compose/material/DrawerState">Compose's <code translate="no" dir="ltr">DrawerState</code></a> depends on another internal state holder, <a href="/reference/kotlin/androidx/compose/material/SwipeableState"><code translate="no" dir="ltr">SwipeableState</code></a>, and how an app's UI logic state holder could depend on <code translate="no" dir="ltr">DrawerState</code>:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-nd">@Stable</span> <span class="devsite-syntax-kd">class</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nc">DrawerState</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-cm">/* ... */</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">internal</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">swipeableState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">SwipeableState</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-cm">/* ... */</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// ...</span> <span class="devsite-syntax-p">}</span> <span class="devsite-syntax-nd">@Stable</span> <span class="devsite-syntax-kd">class</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nc">MyAppState</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">private</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">drawerState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">DrawerState</span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">private</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">navController</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">NavHostController</span> <span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-nd">@Composable</span> <span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">rememberMyAppState</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">drawerState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">DrawerState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">rememberDrawerState</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">DrawerValue</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">Closed</span><span class="devsite-syntax-p">),</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">navController</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">NavHostController</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">rememberNavController</span><span class="devsite-syntax-p">()</span> <span class="devsite-syntax-p">):</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">MyAppState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">remember</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">drawerState</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">navController</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">MyAppState</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">drawerState</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">navController</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code><aside class="caution"><strong>Caution:</strong><span> Given that screen level state holders manage the business logic complexity of a screen or part of it, it wouldn't make sense a screen level state holder depends on another screen level state holder. If you're in this scenario, reconsider your screens and state holders and ensure that's what you need.</span></aside> <p>An example of a dependency that outlives a state holder would be a UI logic state holder depending on a screen level state holder. That would decrease the reusability of the shorter-lived state holder and gives it access to more logic and state than it actually needs.</p> <p>If the shorter-lived state holder needs certain information from a higher-scoped state holder, pass only the information it needs as a parameter instead of passing the state holder instance. For example, in the following code snippet, the UI logic state holder class receives just what it needs as parameters from the ViewModel, instead of passing the whole ViewModel instance as a dependency.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Kotlin"><code translate="no" dir="ltr"><span class="devsite-syntax-kd">class</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nc">MyScreenViewModel</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-cm">/* ... */</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">uiState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">StateFlow<MyScreenUiState></span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">doSomething</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">doAnotherThing</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">}</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// ...</span> <span class="devsite-syntax-p">}</span> <span class="devsite-syntax-nd">@Stable</span> <span class="devsite-syntax-kd">class</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nc">MyScreenState</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// DO NOT pass a ViewModel instance to a plain state holder class</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// private val viewModel: MyScreenViewModel,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Instead, pass only what it needs as a dependency</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">private</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">someState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">StateFlow<SomeState></span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">private</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">doSomething</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">-</span>><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kt">Unit</span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// Other UI-scoped types</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">private</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kd">val</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nv">scaffoldState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">ScaffoldState</span> <span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span> <span class="devsite-syntax-p">}</span> <span class="devsite-syntax-nd">@Composable</span> <span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">rememberMyScreenState</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">someState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">StateFlow<SomeState></span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">doSomething</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">-</span>><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kt">Unit</span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">scaffoldState</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">ScaffoldState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">rememberScaffoldState</span><span class="devsite-syntax-p">()</span> <span class="devsite-syntax-p">):</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">MyScreenState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">remember</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">someState</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">doSomething</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">scaffoldState</span><span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">MyScreenState</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">someState</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">doSomething</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">scaffoldState</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-p">}</span> <span class="devsite-syntax-nd">@Composable</span> <span class="devsite-syntax-kd">fun</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nf">MyScreen</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">modifier</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">Modifier</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">Modifier</span><span class="devsite-syntax-p">,</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">MyScreenViewModel</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-p">(),</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">state</span><span class="devsite-syntax-p">:</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">MyScreenState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">rememberMyScreenState</span><span class="devsite-syntax-p">(</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">someState</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">uiState</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">map</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-nb">it</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">toSomeState</span><span class="devsite-syntax-p">()</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">},</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">doSomething</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">viewModel</span><span class="devsite-syntax-o">::</span><span class="devsite-syntax-n">doSomething</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">),</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-c1">// ...</span> <span class="devsite-syntax-p">)</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">{</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-cm">/* ... */</span> <span class="devsite-syntax-p">}</span> </code></pre></devsite-code> <p>The following diagram represents the dependencies between the UI and different state holders of the previous code snippet:</p> <figure id = "image-7"> <img src="/static/images/topic/architecture/ui-layer/stateholder-dependencies.png" width = "60%" alt = "UI depending on both UI logic state holder and screen level state holder" style="max-width:550px;margin:auto;margin-bottom:2em;display:block;"> <figcaption style="text-align:center"><b>Figure 7</b>: UI depending on different state holders. Arrows mean dependencies.</figcaption> </figure> <h2 id="samples" data-text="Samples" tabindex="-1">Samples</h2> <p>The following Google samples demonstrate the use of state holders in the UI layer. 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