Use Java 8 language features and APIs | Android Studio

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nav link, pathname: /studio/projects/android-library" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/projects/android-library" ><span class="devsite-nav-text" tooltip>Create an Android library</span></a></li><li class="devsite-nav-item"><a href="/studio/projects/continuous-integration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/projects/continuous-integration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/projects/continuous-integration" ><span class="devsite-nav-text" tooltip>Set up continuous integration</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>Write your code</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/write" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write" ><span class="devsite-nav-text" tooltip>Write your code quicker and more efficiently</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>Work with templates</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/projects/templates" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/projects/templates" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/projects/templates" ><span class="devsite-nav-text" tooltip>Add code from a template</span></a></li><li class="devsite-nav-item"><a href="/studio/write/sample-code" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/sample-code" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/sample-code" ><span class="devsite-nav-text" tooltip>Find sample code</span></a></li><li class="devsite-nav-item"><a href="/studio/write/create-java-class" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/create-java-class" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/create-java-class" ><span class="devsite-nav-text" tooltip>Create a Java class or type</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/studio/projects/add-app-module" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/projects/add-app-module" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/projects/add-app-module" ><span class="devsite-nav-text" tooltip>Add a module for a new device</span></a></li><li class="devsite-nav-item"><a href="/studio/write/java8-support" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/java8-support" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/java8-support" ><span class="devsite-nav-text" tooltip>Use Java 8 language features</span></a></li><li class="devsite-nav-item"><a href="/studio/write/java8-support-table" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/java8-support-table" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/java8-support-table" ><span class="devsite-nav-text" tooltip>Java 8 language support table</span></a></li><li class="devsite-nav-item"><a href="/studio/write/add-resources" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/add-resources" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/add-resources" ><span class="devsite-nav-text" tooltip>Add app resources</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>Use tools to develop UI</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-external"><a href="/jetpack/compose/tooling/previews" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /jetpack/compose/tooling/previews" track-type="bookNav" track-name="click" track-metadata-eventdetail="/jetpack/compose/tooling/previews" ><span class="devsite-nav-text" tooltip>Develop a layout with Compose</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="/studio/write/layout-editor" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/layout-editor" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/layout-editor" ><span class="devsite-nav-text" tooltip>Develop a layout with Views</span></a></li><li class="devsite-nav-item"><a href="/studio/write/motion-editor" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/motion-editor" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/motion-editor" ><span class="devsite-nav-text" tooltip>Create animations</span></a></li><li class="devsite-nav-item"><a href="/studio/write/resource-manager" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/resource-manager" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/resource-manager" ><span class="devsite-nav-text" tooltip>Manage UI resources</span></a></li><li class="devsite-nav-item"><a href="/studio/write/vector-asset-studio" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/vector-asset-studio" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/vector-asset-studio" ><span class="devsite-nav-text" tooltip>Add multi-density vector graphics</span></a></li><li class="devsite-nav-item"><a href="/studio/write/create-app-icons" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/create-app-icons" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/create-app-icons" ><span class="devsite-nav-text" tooltip>Create app icons</span></a></li><li class="devsite-nav-item"><a href="/studio/write/draw9patch" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/draw9patch" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/draw9patch" ><span class="devsite-nav-text" tooltip>Create resizable bitmaps (9-patch)</span></a></li><li class="devsite-nav-item"><a href="/studio/write/convert-webp" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/convert-webp" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/convert-webp" ><span class="devsite-nav-text" tooltip>Create WebP images</span></a></li><li class="devsite-nav-item"><a href="/studio/write/translations-editor" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/translations-editor" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/translations-editor" ><span class="devsite-nav-text" tooltip>Localize the UI</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/studio/write/app-link-indexing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/app-link-indexing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/app-link-indexing" ><span class="devsite-nav-text" tooltip>Add Android app links</span></a></li><li class="devsite-nav-item"><a href="/studio/write/firebase" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/firebase" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/firebase" ><span class="devsite-nav-text" tooltip>Connect to Firebase</span></a></li><li class="devsite-nav-item"><a href="/studio/write/lint" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/lint" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/lint" ><span class="devsite-nav-text" tooltip>Improve your code with lint checks</span></a></li><li class="devsite-nav-item"><a href="/studio/write/annotations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/annotations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/annotations" ><span class="devsite-nav-text" tooltip>Improve code inspection with annotations</span></a></li><li class="devsite-nav-item"><a href="/studio/write/tool-attributes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/write/tool-attributes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/write/tool-attributes" ><span class="devsite-nav-text" tooltip>Tools attributes reference</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>Run and debug your app</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/run" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run" ><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>Run your app on virtual devices</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/run/managing-avds" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/managing-avds" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/managing-avds" ><span class="devsite-nav-text" tooltip>Create and manage virtual devices</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>Run your app with Android Emulator</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/run/emulator" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/studio/run/resizable-emulator" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/resizable-emulator" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/resizable-emulator" ><span class="devsite-nav-text" tooltip>Test on multiple screen sizes</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-take-screenshots" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-take-screenshots" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-take-screenshots" ><span class="devsite-nav-text" tooltip>Take screenshots</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-record-screen" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-record-screen" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-record-screen" ><span class="devsite-nav-text" tooltip>Record the screen</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-use-camera" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-use-camera" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-use-camera" ><span class="devsite-nav-text" tooltip>Use the camera</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-launch-separate-window" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-launch-separate-window" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-launch-separate-window" ><span class="devsite-nav-text" tooltip>Launch in a separate window</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-launch-without-app" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-launch-without-app" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-launch-without-app" ><span class="devsite-nav-text" tooltip>Launch without running an app</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-install-add-files" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-install-add-files" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-install-add-files" ><span class="devsite-nav-text" tooltip>Install and add files</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-wifi" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-wifi" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-wifi" ><span class="devsite-nav-text" tooltip>Use WiFi</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>Use advanced Android Emulator features</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/run/emulator-extended-controls" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-extended-controls" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-extended-controls" ><span class="devsite-nav-text" tooltip>Use extended controls</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-snapshots" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-snapshots" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-snapshots" ><span class="devsite-nav-text" tooltip>Use snapshots</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-commandline" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-commandline" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-commandline" ><span class="devsite-nav-text" tooltip>Use the emulator from the command line</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-console" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-console" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-console" ><span class="devsite-nav-text" tooltip>Send console commands</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-networking" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-networking" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-networking" ><span class="devsite-nav-text" tooltip>Set up networking</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-acceleration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-acceleration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-acceleration" ><span class="devsite-nav-text" tooltip>Configure hardware acceleration</span></a></li><li class="devsite-nav-item"><a href="/studio/run/emulator-comparison" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-comparison" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-comparison" ><span class="devsite-nav-text" tooltip>Emulator feature comparison</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/studio/run/emulator-troubleshooting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/emulator-troubleshooting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/emulator-troubleshooting" ><span class="devsite-nav-text" tooltip>Troubleshoot emulator</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item"><a href="/studio/run/android-device-streaming" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/android-device-streaming" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/android-device-streaming" ><span class="devsite-nav-text" tooltip>Android Device Streaming</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>Run your app on a local device</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/run/device" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/device" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/device" ><span class="devsite-nav-text" tooltip>Get started</span></a></li><li class="devsite-nav-item"><a href="/studio/run/oem-usb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/oem-usb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/oem-usb" ><span class="devsite-nav-text" tooltip>Install OEM USB drivers</span></a></li><li class="devsite-nav-item"><a href="/studio/run/win-usb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/win-usb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/win-usb" ><span class="devsite-nav-text" tooltip>Get the Google USB driver</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>Debug your code</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/debug" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug" ><span class="devsite-nav-text" tooltip>Get started debugging your code</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/dev-options" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/dev-options" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/dev-options" ><span class="devsite-nav-text" tooltip>Configure developer options</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/logcat" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/logcat" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/logcat" ><span class="devsite-nav-text" tooltip>Write and view logs</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>Analyze and address crash issues</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/debug/stacktraces" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/stacktraces" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/stacktraces" ><span class="devsite-nav-text" tooltip>Analyze a stack trace</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/app-quality-insights" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/app-quality-insights" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/app-quality-insights" ><span class="devsite-nav-text" tooltip>Analyze Crashlytics and Vitals reports</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/studio/debug/layout-inspector" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/layout-inspector" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/layout-inspector" ><span class="devsite-nav-text" tooltip>Debug your layout</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/universal-problems-panel" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/universal-problems-panel" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/universal-problems-panel" ><span class="devsite-nav-text" tooltip>View design issues</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/network-profiler" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/network-profiler" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/network-profiler" ><span class="devsite-nav-text" tooltip>Inspect network traffic</span></a></li><li class="devsite-nav-item"><a href="/studio/inspect/database" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/inspect/database" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/inspect/database" ><span class="devsite-nav-text" tooltip>Debug your database</span></a></li><li class="devsite-nav-item"><a href="/studio/inspect/task" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/inspect/task" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/inspect/task" ><span class="devsite-nav-text" tooltip>Debug your WorkManager Workers</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/device-file-explorer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/device-file-explorer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/device-file-explorer" ><span class="devsite-nav-text" tooltip>View on-device files</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/apk-debugger" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/apk-debugger" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/apk-debugger" ><span class="devsite-nav-text" tooltip>Debug pre-built APKs</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/am-screenshot" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/am-screenshot" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/am-screenshot" ><span class="devsite-nav-text" tooltip>Take a screenshot</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/am-video" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/am-video" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/am-video" ><span class="devsite-nav-text" tooltip>Record a video</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/bug-report" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/bug-report" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/bug-report" ><span class="devsite-nav-text" tooltip>Capture and read bug reports</span></a></li><li class="devsite-nav-item"><a href="/studio/debug/apk-analyzer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/debug/apk-analyzer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/debug/apk-analyzer" ><span class="devsite-nav-text" tooltip>Analyze your APK or AAB</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/studio/run/rundebugconfig" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/run/rundebugconfig" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/run/rundebugconfig" ><span class="devsite-nav-text" tooltip>Customize run/debug configurations</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>Test your code</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test" ><span class="devsite-nav-text" tooltip>Choose a testing method</span></a></li><li class="devsite-nav-item"><a href="/studio/test/test-in-android-studio" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/test-in-android-studio" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/test-in-android-studio" ><span class="devsite-nav-text" tooltip>Test in Android Studio</span></a></li><li class="devsite-nav-item"><a href="/studio/test/gradle-managed-devices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/gradle-managed-devices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/gradle-managed-devices" ><span class="devsite-nav-text" tooltip>Test with Gradle Managed Devices</span></a></li><li class="devsite-nav-item"><a href="/studio/test/espresso-api" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/espresso-api" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/espresso-api" ><span class="devsite-nav-text" tooltip>Test against screen changes</span></a></li><li class="devsite-nav-item"><a href="/studio/test/command-line" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/command-line" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/command-line" ><span class="devsite-nav-text" tooltip>Test from the command line</span></a></li><li class="devsite-nav-item"><a href="/studio/test/advanced-test-setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/advanced-test-setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/advanced-test-setup" ><span class="devsite-nav-text" tooltip>Set up advanced test 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>Use specialized testing tools</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/test/other-testing-tools/espresso-test-recorder" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/other-testing-tools/espresso-test-recorder" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/other-testing-tools/espresso-test-recorder" ><span class="devsite-nav-text" tooltip>Create UI tests</span></a></li><li class="devsite-nav-item"><a href="/studio/test/other-testing-tools/app-crawler" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/other-testing-tools/app-crawler" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/other-testing-tools/app-crawler" ><span class="devsite-nav-text" tooltip>Set up automatic testing of your code</span></a></li><li class="devsite-nav-item"><a href="/studio/test/other-testing-tools/monkey" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/test/other-testing-tools/monkey" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/test/other-testing-tools/monkey" ><span class="devsite-nav-text" tooltip>Stress-test your code with user events</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>Inspect performance issues</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/profile" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile" ><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>Record a system trace</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/profile/cpu-profiler" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/cpu-profiler" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/cpu-profiler" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/inspect-traces" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/inspect-traces" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/inspect-traces" ><span class="devsite-nav-text" tooltip>Inspect traces</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/jank-detection" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/jank-detection" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/jank-detection" ><span class="devsite-nav-text" tooltip>Detect UI jank</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/power-profiler" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/power-profiler" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/power-profiler" ><span class="devsite-nav-text" tooltip>Inspect power usage</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/generate-trace-logs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/generate-trace-logs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/generate-trace-logs" ><span class="devsite-nav-text" tooltip>Generate trace logs</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/studio/profile/capture-heap-dump" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/capture-heap-dump" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/capture-heap-dump" ><span class="devsite-nav-text" tooltip>Capture a heap dump</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/sample-callstack" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/sample-callstack" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/sample-callstack" ><span class="devsite-nav-text" tooltip>Sample the callstack</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/record-java-kotlin-allocations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/record-java-kotlin-allocations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/record-java-kotlin-allocations" ><span class="devsite-nav-text" tooltip>Record Java/Kotlin allocations</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/record-java-kotlin-methods" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/record-java-kotlin-methods" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/record-java-kotlin-methods" ><span class="devsite-nav-text" tooltip>Record Java/Kotlin methods</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/record-native-allocations" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/record-native-allocations" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/record-native-allocations" ><span class="devsite-nav-text" tooltip>Record native allocations</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/inspect-app-live" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/inspect-app-live" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/inspect-app-live" ><span class="devsite-nav-text" tooltip>Inspect your app live</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/apk-profiler" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/apk-profiler" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/apk-profiler" ><span class="devsite-nav-text" tooltip>Inspect pre-built APKs</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/standalone-profiler" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/standalone-profiler" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/standalone-profiler" ><span class="devsite-nav-text" tooltip>Run the standalone profiler</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/build-run-manually" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/build-run-manually" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/build-run-manually" ><span class="devsite-nav-text" tooltip>Build and run a profileable app manually</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>Chart glossary</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/profile/chart-glossary/call-chart" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/chart-glossary/call-chart" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/chart-glossary/call-chart" ><span class="devsite-nav-text" tooltip>Call chart</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/chart-glossary/events-table" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/chart-glossary/events-table" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/chart-glossary/events-table" ><span class="devsite-nav-text" tooltip>Events table</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/chart-glossary/flame-chart" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/chart-glossary/flame-chart" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/chart-glossary/flame-chart" ><span class="devsite-nav-text" tooltip>Flame chart</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/chart-glossary/process-memory" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/chart-glossary/process-memory" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/chart-glossary/process-memory" ><span class="devsite-nav-text" tooltip>Process memory (RSS)</span></a></li><li class="devsite-nav-item"><a href="/studio/profile/chart-glossary/top-bottom-charts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/profile/chart-glossary/top-bottom-charts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/profile/chart-glossary/top-bottom-charts" ><span class="devsite-nav-text" tooltip>Top down and bottom up charts</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>Publish your app</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/studio/publish" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/publish" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/publish" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/studio/publish/preparing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/publish/preparing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/publish/preparing" ><span class="devsite-nav-text" tooltip>Prepare for release</span></a></li><li class="devsite-nav-item"><a href="/studio/publish/versioning" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/publish/versioning" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/publish/versioning" ><span class="devsite-nav-text" tooltip>Version your app</span></a></li><li class="devsite-nav-item"><a href="/studio/publish/app-signing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/publish/app-signing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/publish/app-signing" ><span class="devsite-nav-text" tooltip>Sign your app</span></a></li><li class="devsite-nav-item"><a href="/studio/publish/upload-bundle" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/publish/upload-bundle" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/publish/upload-bundle" ><span class="devsite-nav-text" tooltip>Upload your app</span></a></li></ul></div></li> <li class="devsite-nav-item"><a href="/studio/troubleshoot" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/troubleshoot" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/troubleshoot" ><span class="devsite-nav-text" tooltip>Troubleshoot</span></a></li> <li class="devsite-nav-item"><a href="/studio/known-issues" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/known-issues" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/known-issues" ><span class="devsite-nav-text" tooltip>Known issues</span></a></li> <li class="devsite-nav-item"><a href="/studio/report-bugs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /studio/report-bugs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/studio/report-bugs" ><span class="devsite-nav-text" tooltip>Report a bug</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 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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 Android Gradle plugin 3.0.0 and later supports all Java 7 language features and a subset of Java 8 language features that vary by platform version. When building your app using the Android Gradle plugin 4.0.0 and higher, you can use some Java 8 language APIs without requiring a minimum API level for your app.</p> <p>This page describes the Java 8 language features you can use, how to properly configure your project to use them, and any known issues you may encounter. See the following video for an overview of Java 8 language features.</p> <div class="video-wrapper-left"> <iframe class="devsite-embedded-youtube-video" data-video-id="LhaSi6_i2bo" data-autohide="1" data-showinfo="0" frameborder="0" allowfullscreen> </iframe> </div> <aside class="note"><strong>Note:</strong><span> When developing apps for Android, using Java 8 language features is optional. You can keep your project's source and target compatibility values set to Java 7, but you still need to compile using JDK 8.</span></aside> <p>The Android Gradle plugin provides built-in support for using certain Java 8 language features and third-party libraries that use them. The default toolchain implements the new language features by performing bytecode transformations, called <code translate="no" dir="ltr">desugar</code>, as part of the D8/R8 compilation of class files into DEX code, as shown in figure 1.</p> <figure> <img src="/static/studio/images/write/desugar_diagram.png" alt="Java 8 language feature support using `desugar` bytecode transformations"> <figcaption class="img-caption"> <b>Figure 1.</b> Java 8 language feature support using <code translate="no" dir="ltr">desugar</code> bytecode transformations. </figcaption> </figure> <aside class="note"><strong>Note:</strong><span> Your choice of bytecode level is a balance between functionality and build speed. Bytecode level 6 has a faster build and fewer features, whereas bytecode level 7 has a balance of features and build speed, and bytecode 8 is more feature rich with slower builds.</span></aside> <h2 id="supported_features" data-text="Java 8 language feature support (Android Gradle Plugin 3.0.0+)" tabindex="-1">Java 8 language feature support (Android Gradle Plugin 3.0.0+)</h2> <p>To start using supported Java 8 language features:</p> <ol> <li><a href="/studio/releases/gradle-plugin#updating-plugin">Update the Android Gradle plugin</a> to 3.0.0 or higher.</li> <li>For each module that uses Java 8 language features (either in its source code or through dependencies), update the module's <code translate="no" dir="ltr">build.gradle</code> or <code translate="no" dir="ltr">build.gradle.kts</code> file as shown below:</li> </ol> <div> <div class="ds-selector-tabs"><section><h3 class="two-line-tab" tab-label="build.gradle.kts" id="kts" data-text="Kotlin" tabindex="-1">Kotlin</h3> <pre class="prettyprint lang-kotlin" translate="no" dir="ltr"> android { ... // Configure only for each module that uses Java 8 // language features (either in its source code or // through dependencies). compileOptions { sourceCompatibility = JavaVersion.VERSION_1_8 targetCompatibility = JavaVersion.VERSION_1_8 } // For Kotlin projects kotlinOptions { jvmTarget = "1.8" } } </pre> </section><section><h3 class="two-line-tab" tab-label="build.gradle" id="groovy" data-text="Groovy" tabindex="-1">Groovy</h3> <pre class="prettyprint lang-groovy" translate="no" dir="ltr"> android { ... // Configure only for each module that uses Java 8 // language features (either in its source code or // through dependencies). compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } // For Kotlin projects kotlinOptions { jvmTarget = "1.8" } } </pre> </section></div> </div> <p>When building your app using the Android Gradle plugin 3.0.0 and higher, the plugin doesn't support all Java 8 language features. The following language features are available on any API level:</p> <table style="max-width:700px;margin-left:auto;margin-right:auto;"> <thead> <tr> <th style="width:40%;">Java 8 language feature</th> <th style="width:60%;">Notes</th> </tr> </thead> <tbody> <tr> <td><a class="external-link" href="https://docs.oracle.com/javase/tutorial/java/javaOO/lambdaexpressions.html">Lambda expressions</a></td> <td>Android doesn't support the serialization of lambda expressions.</td> </tr> <tr> <td><a class="external-link" href="https://docs.oracle.com/javase/tutorial/java/javaOO/methodreferences.html">Method references</a></td> <td> </td> </tr> <tr> <td><a class="external-link" href="https://docs.oracle.com/javase/tutorial/java/annotations/type_annotations.html">Type annotations</a></td> <td>Type annotation information is only available at compile time, not at runtime. The platform supports <a href="/reference/java/lang/annotation/ElementType#TYPE"><code translate="no" dir="ltr">TYPE</code></a> in API level 24 and below, but not <code translate="no" dir="ltr">ElementType.TYPE_USE</code> or <code translate="no" dir="ltr">ElementType.TYPE_PARAMETER</code>. </td> </tr> <tr> <td><a class="external-link" href="https://docs.oracle.com/javase/tutorial/java/IandI/defaultmethods.html">Default and static interface methods</a></td> <td> </td> </tr> <tr> <td><a class="external-link" href="https://docs.oracle.com/javase/tutorial/java/annotations/repeating.html">Repeating annotations</a></td> <td> </td> </tr> </tbody> </table> <p>In addition to these Java 8 language features, Android Gradle plugin versions 3.0.0 and higher extend support for <a class="external-link" href="https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html"> <code translate="no" dir="ltr">try</code>-with-resources</a> to all Android API levels.</p> <p>Desugar doesn't support <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/invoke/MethodHandle.html#invoke-java.lang.Object...-"><code translate="no" dir="ltr">MethodHandle.invoke</code></a> or <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/invoke/MethodHandle.html#invokeExact-java.lang.Object...-"><code translate="no" dir="ltr">MethodHandle.invokeExact</code></a>. If your source code or one of your module dependencies uses one of these methods, you need to specify <code translate="no" dir="ltr">minSdkVersion 26</code> or higher. Otherwise, you receive the following error:</p> <pre class="devsite-click-to-copy" translate="no" dir="ltr"><code translate="no" dir="ltr">Dex: Error converting bytecode to dex: Cause: signature-polymorphic method called without --min-sdk-version >= 26 </code></pre> <p>In some cases, your module might not be using the <code translate="no" dir="ltr">invoke</code> or <code translate="no" dir="ltr">invokeExact</code> methods even when they're included in a library dependency. To keep using that library with <code translate="no" dir="ltr">minSdkVersion 25</code> or lower, <a href="/studio/build/shrink-code#shrink-code">enable code shrinking</a> to remove unused methods. If that doesn't work, consider using an alternative library that doesn't use the unsupported methods.</p> <p>Java 8+ language features desugaring on the Android Gradle plugin 3.0.0 and higher and doesn't make any additional classes and APIs (such as <code translate="no" dir="ltr">java.util.stream.*</code>) available for use on older Android releases. Support for partial Java API desugaring is available from the Android Gradle plugin 4.0.0 or higher, as described in the following section.</p> <h2 id="library-desugaring" data-text="Java 8+ API desugaring support (Android Gradle Plugin 4.0.0+)" tabindex="-1">Java 8+ API desugaring support (Android Gradle Plugin 4.0.0+)</h2> <p>If you're building your app using the Android Gradle plugin 4.0.0 or higher, the plugin extends support for using a number of Java 8 language APIs without requiring a minimum API level for your app. With Android Gradle plugin 7.4.0 or higher, a number of Java 11 language APIs are also available with desugared library 2.0.0 or higher.</p> <p>This additional support for older platform versions is possible because plugin 4.0.0 and higher extends the desugaring engine to also desugar Java language APIs. You can include standard language APIs that were available only in recent Android releases (such as <code translate="no" dir="ltr">java.util.streams</code>) in apps that support older versions of Android.</p> <p>The following set of APIs are supported when building your app using Android Gradle plugin 4.0.0 or higher:</p> <ul> <li>Sequential streams (<code translate="no" dir="ltr">java.util.stream</code>)</li> <li>A subset of <code translate="no" dir="ltr">java.time</code></li> <li><code translate="no" dir="ltr">java.util.function</code></li> <li>Recent additions to <code translate="no" dir="ltr">java.util.{Map,Collection,Comparator}</code></li> <li>Optionals (<code translate="no" dir="ltr">java.util.Optional</code>, <code translate="no" dir="ltr">java.util.OptionalInt</code>, and <code translate="no" dir="ltr">java.util.OptionalDouble</code>) and some new classes</li> <li>Some additions to <code translate="no" dir="ltr">java.util.concurrent.atomic</code> (new methods on <code translate="no" dir="ltr">AtomicInteger</code>, <code translate="no" dir="ltr">AtomicLong</code>, and <code translate="no" dir="ltr">AtomicReference</code>)</li> <li><code translate="no" dir="ltr">ConcurrentHashMap</code> (with bug fixes for Android 5.0)</li> </ul> <p>With Android Gradle plugin 7.4.0 or higher, additional Java 11 APIs are supported such as a subset of the <code translate="no" dir="ltr">java.nio.file</code> package.</p> <p>For a complete list of supported APIs, visit <a href="/studio/write/java8-support-table">Java 8+ APIs available through desugaring</a> and <a href="/studio/write/java11-default-support-table">Java 11+ APIs available through desugaring</a>.</p> <p>To support these language APIs, the plugin compiles a separate DEX file that contains an implementation of the missing APIs and includes it in your app. The desugaring process rewrites your app’s code to instead use this library at runtime.</p> <p>To enable support for these language APIs on any version of the Android platform:</p> <ol> <li><a href="/studio/releases/gradle-plugin#updating-plugin">Update the Android Gradle plugin</a> to 4.0.0 (or higher).</li> <li>Include the following in your <strong>app module</strong>’s <code translate="no" dir="ltr">build.gradle</code> or <code translate="no" dir="ltr">build.gradle.kts</code> file:</li> </ol> <div> <div class="ds-selector-tabs"><section><h3 class="two-line-tab" tab-label="build.gradle.kts" id="kts" data-text="Kotlin" tabindex="-1">Kotlin</h3> <pre class="prettyprint lang-kotlin" translate="no" dir="ltr"> android { defaultConfig { // Required when setting minSdkVersion to 20 or lower multiDexEnabled = true } compileOptions { // Flag to enable support for the new language APIs // For AGP 4.1+ isCoreLibraryDesugaringEnabled = true // For AGP 4.0 // coreLibraryDesugaringEnabled = true // Sets Java compatibility to Java 8 sourceCompatibility = JavaVersion.VERSION_1_8 targetCompatibility = JavaVersion.VERSION_1_8 } } dependencies { // For AGP 7.4+ coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.0.3") // For AGP 7.3 // coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:1.2.3") // For AGP 4.0 to 7.2 // coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:1.1.9") } </pre> </section><section><h3 class="two-line-tab" tab-label="build.gradle" id="groovy" data-text="Groovy" tabindex="-1">Groovy</h3> <pre class="prettyprint lang-groovy" translate="no" dir="ltr"> android { defaultConfig { // Required when setting minSdkVersion to 20 or lower multiDexEnabled true } compileOptions { // Flag to enable support for the new language APIs coreLibraryDesugaringEnabled true // Sets Java compatibility to Java 8 sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } dependencies { // For AGP 7.4+ coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.3' // For AGP 7.3 // coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.2.3' // For AGP 4.0 to 7.2 // coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.9' } </pre> </section></div> </div> <p>Note that you may also need to include the previous code snippet in a library module's <code translate="no" dir="ltr">build.gradle</code> or <code translate="no" dir="ltr">build.gradle.kts</code> file if:</p> <ul> <li><p>The library module's instrumented tests use these language APIs (either directly or through the library module or its dependencies). This is so that the missing APIs are provided for your instrumented test APK.</p></li> <li><p>You want to run lint on the library module in isolation. This is to help lint recognize valid usages of the language APIs and avoid reporting false warnings.</p></li> </ul> <p>Also note that API desugaring can be combined with shrinking, but only when using the R8 shrinker.</p> <h3 id="library-desugaring-versions" data-text="Versions" tabindex="-1">Versions</h3> <p>The following table shows the versions of the Java 8+ API library and the minimum Android Gradle plugin version that supports each version:</p> <table style="max-width:700px;margin-left:auto;margin-right:auto;"> <thead> <tr> <th style="width:30%;">Version</th> <th style="width:70%;">Minimum Android Gradle plugin version</th> </tr> </thead> <tbody> <tr> <td>1.1.9</td> <td>4.0.0</td> </tr> <tr> <td>1.2.3</td> <td>7.3.0</td> </tr> <tr> <td>2.0.3</td> <td>7.4.0-alpha10</td> </tr> </tbody> </table> <p>For details on the versions of the Java 8+ API library, see the <a class="external-link" href="https://github.com/google/desugar_jdk_libs/blob/master/CHANGELOG.md">CHANGELOG.md file</a> in the <code translate="no" dir="ltr">desugar_jdk_libs</code> GitHub repository.</p> <devsite-hats-survey class="nocontent" hats-id="VxqvKSur40kxBYCLVTd0SSGykbno" listnr-id="5207477"></devsite-hats-survey> </div> <devsite-recommendations display="in-page" hidden yield> </devsite-recommendations> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-recommendations id="recommendations-link" yield></devsite-recommendations> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Content and code samples on this page are subject to the licenses described in the <a href="/license">Content License</a>. 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