Android system bars | Mobile | Android Developers

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track-name="click" track-metadata-eventdetail="/design/ui/mobile/guides/widgets/style" ><span class="devsite-nav-text" tooltip>Style</span></a></li><li class="devsite-nav-item"><a href="/design/ui/mobile/guides/widgets/discovery-promotion" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /design/ui/mobile/guides/widgets/discovery-promotion" track-type="bookNav" track-name="click" track-metadata-eventdetail="/design/ui/mobile/guides/widgets/discovery-promotion" ><span class="devsite-nav-text" tooltip>Discovery and promotion</span></a></li><li class="devsite-nav-item"><a href="/design/ui/mobile/guides/widgets/widget_quality_guide" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /design/ui/mobile/guides/widgets/widget_quality_guide" track-type="bookNav" track-name="click" track-metadata-eventdetail="/design/ui/mobile/guides/widgets/widget_quality_guide" ><span class="devsite-nav-text" tooltip>Widget Quality Tiers</span></a></li></ul></div></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" 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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 "> <figure> <img class="invert" src="/static/images/design/ui/mobile/system-bars-hero.png"> </figure> <p>Together, the status bar and the navigation bar are called the <em>system bars</em>. They display important information such as battery level, the time, and notification alerts, and provide direct device interaction from anywhere.</p> <p>It's critical to take the prominence of system bars into account, whether you're designing UI for interactions with the Android OS, input methods, or other device capabilities.</p> <figure id="system-bars-image-behind"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-image-behind.png" alt> <figcaption><b>Figure 1:</b> Images behind system bars</figcaption> </figure> <h2 id="takeaways" data-text="Takeaways" tabindex="-1">Takeaways</h2> <ul> <li><p>Include system bars when designing your app. Account for UI safe zones, system interactions, input methods, display cutouts, status bars, caption bars, navigation bars, and other device capabilities.</p></li> <li><p>Keep the system status and navigation bars transparent or translucent and draw content behind these bars to go edge-to-edge.</p></li> <li><p>Avoid adding tap gestures or drag targets under gesture insets; these conflict with edge-to-edge and gesture navigation.</p> <figure id="system-bars-takeaway-3"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-takeaway-3.png" width="400" alt> <figcaption><b>Figure 2:</b> System gesture insets. Avoid placing tap targets under these areas</figcaption> </figure> <aside class="note"><strong>Note:</strong><span> System bars and navigation can vary by device manufacturer. Older devices may have hardware navigation buttons instead of software buttons.</span></aside></li> </ul> <h2 id="draw-content" data-text="Draw your content behind the system bars" tabindex="-1">Draw your content behind the system bars</h2> <p>The edge-to-edge feature allows Android to draw the UI under the system bars for an immersive experience, which is a common request from users.</p> <aside class="note"><strong>Note:</strong><span> Don't hide the system bars, except temporarily for <a href="/design/ui/mobile/guides/layout-and-content/immersive-content">immersive mode experiences</a> such as watching a full-screen video.</span></aside> <p>An app can address overlaps in content by reacting to <em>insets</em>. Insets describe how much the content of your app needs to be padded to avoid overlapping with parts of the Android OS UI such as the navigation bar or status bar, or with physical device features such as <a href="/develop/ui/views/layout/display-cutout">display cutouts</a>. Read about how to support edge-to-edge and handle insets in <a href="/develop/ui/compose/layouts/insets">Compose</a> and <a href="/develop/ui/views/layout/edge-to-edge">views</a>.</p> <p>Be aware of the following types of insets when designing for edge-to-edge use cases:</p> <ul> <li><em>System bars insets</em> apply to UI that is both tappable and that shouldn't be visually obscured by the system bars.</li> <li><em>System gesture insets</em> apply to gesture-navigational areas used by the system that take priority over your app.</li> </ul> <h2 id="status-bar" data-text="Status bar" tabindex="-1">Status bar</h2> <p>On Android, the status bar contains notification icons and system icons. The user interacts with the status bar by pulling it down to access the notification shade.</p> <figure id="system-bars-status-bar-region-highlighted"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-status-bar-region-highlighted.png" width="400" alt> <figcaption><b>Figure 3:</b> Status bar region highlighted on top of top app bar</figcaption> </figure> <p>Status bar icons can appear differently depending on the context, time of day, user-set preferences or themes, and other parameters. You can set the status bar icon style as in the following examples.</p> <figure id="system-bars-status-bar-light-dark-theme"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-status-bar-light-dark-theme.png" width="400" alt> <figcaption><b>Figure 4:</b> Status bar icons in light and dark theme.</figcaption> </figure> <p>Ensure that your app content spans the entire screen. Keep status and navigation bars transparent or translucent with edge-to-edge content as shown in the following example.</p> <figure id="system-bars-transparent-edge-to-edge"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-transparent-edge-to-edge.png" alt> <figcaption><b>Figure 5:</b> An edge-to-edge app with transparent system bars is ideal for letting your content shine through using the most screen space.</figcaption> </figure> <p>Edge-to-edge is enforced on Android 15 so that the system bars are transparent or translucent by default. On earlier versions of Android, don't leave the system bars opaque.</p> <figure id="system-bars-do-and-dont"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-do-and-dont.png" alt> <figcaption><b>Figure 6:</b> Do go edge-to-edge to enhance your content. Don't have opaque system bars.</figcaption> </figure> <p>When a notification arrives, an icon usually appears in the status bar. This signals to the user that there's something to see in the notification drawer. This can be your app icon or symbol to represent the channel. See <a href="/design/ui/mobile/guides/home-screen/notifications">Notifications design</a>.</p> <figure id="system-bars-notification-icon"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-notification-icon.png" width="400" alt> <figcaption><b>Figure 7:</b> Notification icon in the status bar</figcaption> </figure> <h3 id="set-status" data-text="Set the status bar style" tabindex="-1">Set the status bar style</h3> <p>Ensure the status bar is transparent on all versions by calling <code translate="no" dir="ltr">enableEdgeToEdge()</code>. Ensure to update the status bar icon colors for contrast. For example, to create dark icons:</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-n">WindowCompat</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">getInsetsController</span><span class="devsite-syntax-p">(</span><span class="devsite-syntax-n">window</span><span class="devsite-syntax-p">,</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-n">window</span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">decorView</span><span class="devsite-syntax-p">)</span> <span class="devsite-syntax-w"> </span><span class="devsite-syntax-p">.</span><span class="devsite-syntax-na">isAppearanceLightStatusBars</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-o">=</span><span class="devsite-syntax-w"> </span><span class="devsite-syntax-kc">false</span> </code></pre></devsite-code> <h3 id="display-cutouts" data-text="Display cutouts and the status bar" tabindex="-1">Display cutouts and the status bar</h3> <p>A display cutout is an area on some devices that extends into the display surface to provide space for front-facing sensors. It can affect the appearance of status bars. Display cutouts can vary depending on the manufacturer.</p> <p>Read about how to <a href="/develop/ui/views/layout/display-cutout">support display cutouts</a>.</p> <figure id="system-bars-display-cutouts"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-display-cutouts.png" alt> <figcaption><b>Figure 8:</b> Examples of display cutouts</figcaption> </figure> <h2 id="navigation-bar" data-text="Navigation bar" tabindex="-1">Navigation bar</h2> <p>Android lets users control navigation using back, home, and overview controls:</p> <ul> <li>Back returns directly back to the previous view.</li> <li>Home transitions out of the app and to the device's home screen.</li> <li>Overview shows the apps are open and have recently been opened.</li> </ul> <p>Users can choose from various navigation bar configurations including gesture navigation (recommended) and three-button navigation. To deliver the best experience, account for multiple types of navigation.</p> <h3 id="gesture-navigation" data-text="Gesture navigation" tabindex="-1">Gesture navigation</h3> <p>Introduced in Android 10 (API level 29), gesture navigation is the recommended type of navigation, although you can't override the user's preference. Gesture navigation doesn't use buttons for back, home, and overview, instead showing a single gesture handle for affordance. Users interact by swiping from the left or right edge of the screen to go back and up from the bottom to go home. Swiping up and holding opens the overview.</p> <p>Gesture navigation is a more scalable navigation pattern for designing across mobile and larger screens. To provide the best user experience, account for gesture navigation by:</p> <ul> <li>Supporting edge-to-edge content.</li> <li>Avoid adding interactions or touch targets under gesture navigation insets.</li> </ul> <p>Read about <a href="/develop/ui/views/touch-and-input/gestures/gesturenav">implementing gesture navigation</a>.</p> <figure id="system-bars-gesture-handle"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-gesture-handle.png" alt> <figcaption><b>Figure 9:</b> Gesture handle navigation bar</figcaption> </figure> <h3 id="three-button-navigation" data-text="Three-button navigation" tabindex="-1">Three-button navigation</h3> <p>Three-button navigation provides three buttons for back, home, and overview.</p> <figure id="system-bars-3-button-nav"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-3-button-nav.png" alt> <figcaption><b>Figure 10:</b> Three-button navigation bar</figcaption> </figure> <h3 id="other-navigation" data-text="Other navigation bar variations" tabindex="-1">Other navigation bar variations</h3> <p>Depending on Android version and device other navigation bar configurations may be available to your users. Two-button navigation, for example, provides two buttons for home and back.</p> <figure id="system-bars-2-button-nav"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-2-button-nav.png" alt> <figcaption><b>Figure 11:</b> Two-button navigation bar</figcaption> </figure> <h3 id="set-navigation" data-text="Set a navigation style" tabindex="-1">Set a navigation style</h3> <p>Ensure the navigation bar is transparent or translucent on all versions by calling <code translate="no" dir="ltr">enableEdgeToEdge()</code>.</p> <p>On Android 15 and later devices, or after calling <code translate="no" dir="ltr">enableEdgeToEdge()</code>, gesture navigation is transparent by default. Three-button navigation is translucent by default or opaque if it is inside the taskbar on large screen device.</p> <p>If your app has a bottom app bar, set <code translate="no" dir="ltr">Window.setNavigationBarContrastEnforced()</code> to <code translate="no" dir="ltr">false</code> to ensure the bottom app bar can draw underneath the system's navigation bar without having a translucent scrim applied in three-button navigation.</p> <p>Android handles visual protection of the user interface in gesture navigation mode and in the button modes.</p> <ul> <li><p><strong>Gesture navigation mode</strong>: The system applies dynamic color adaptation, in which the contents of the system bars change color based on the content behind them. In the following example, the handle in the navigation bar changes to a dark color if it's placed above light content, and vice versa.</p> <figure id="system-bars-dynamic-color-adaptation"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-dynamic-color-adaptation.png" alt> <figcaption><b>Figure 12:</b> Dynamic color adaptation</figcaption> </figure></li> <li><p><strong>Button modes</strong>: The system applies a translucent scrim behind button navigation bars, which can be removed by setting <code translate="no" dir="ltr">Window.setNavigationBarContrastEnforced()</code> to <code translate="no" dir="ltr">false</code>.</p> <figure id="system-bars-translucent-scrim"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-translucent-scrim.png" width="400" alt> <figcaption><b>Figure 13:</b> Dynamic color adaptation, where system bars change color based on the content behind them</figcaption> </figure></li> </ul> <h3 id="keyboard-and" data-text="Keyboard and navigation" tabindex="-1">Keyboard and navigation</h3> <figure id="system-bars-on-screen-keyboard"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-on-screen-keyboard.png" width="400" alt> <figcaption><b>Figure 14:</b> On-screen keyboard with navigation bars</figcaption> </figure> <p>Each navigation type reacts appropriately to the <a href="/develop/ui/views/layout/sw-keyboard">on-screen keyboard</a> to allow the user to perform actions such as dismissing or even changing the keyboard type. To ensure a smooth keyboard transition, To ensure a smooth transition that synchronizes the transition of the app with the keyboard sliding up and down from the bottom of the screen, use <a href="/reference/kotlin/androidx/core/view/WindowInsetsAnimationCompat"><code translate="no" dir="ltr">WindowInsetsAnimationCompat</code></a>.</p> <h2 id="immersive-mode" data-text="Immersive mode" tabindex="-1">Immersive mode</h2> <figure id="system-bars-immersive-mode"> <img class="invert" src="/static/images/design/ui/mobile/system-bars-immersive-mode.png" alt> <figcaption><b>Figure 15:</b> Immersive mode showing a full-screen experience on a landscape-oriented mobile device</figcaption> </figure> <p>You can hide system bars when you need a full-screen experience, for example when the user is watching a movie. The user should still be able to tap to reveal system bars and UI in order to navigate or interact with system controls. 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