About Background work | Android Developers

<!doctype html> <html lang="en" dir="ltr"> <head> <meta name="google-signin-client-id" content="721724668570-nbkv1cfusk7kk4eni4pjvepaus73b13t.apps.googleusercontent.com"> <meta name="google-signin-scope" content="profile email https://www.googleapis.com/auth/developerprofiles https://www.googleapis.com/auth/developerprofiles.award"> <meta property="og:site_name" content="Android Developers"> <meta property="og:type" content="website"><meta name="theme-color" content="#34a853"><meta charset="utf-8"> <meta content="IE=Edge" http-equiv="X-UA-Compatible"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="manifest" href="/_pwa/android/manifest.json" crossorigin="use-credentials"> <link rel="preconnect" href="//www.gstatic.com" crossorigin> <link rel="preconnect" href="//fonts.gstatic.com" crossorigin> <link rel="preconnect" href="//fonts.googleapis.com" crossorigin> <link rel="preconnect" href="//apis.google.com" crossorigin> <link rel="preconnect" href="//www.google-analytics.com" crossorigin><link rel="stylesheet" href="//fonts.googleapis.com/css?family=Google+Sans:400,500,600,700|Google+Sans+Text:400,400italic,500,500italic,600,600italic,700,700italic|Roboto+Mono:400,500,700&display=swap"> <link rel="stylesheet" href="//fonts.googleapis.com/css2?family=Material+Icons&family=Material+Symbols+Outlined&display=block"><link rel="stylesheet" href="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/css/app.css"> <link rel="stylesheet" href="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/css/dark-theme.css" disabled> <link rel="shortcut icon" href="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/favicon.svg"> <link rel="apple-touch-icon" href="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/touchicon-180.png"><link rel="canonical" href="https://developer.android.com/develop/background-work"><link rel="search" type="application/opensearchdescription+xml" title="Android Developers" href="https://developer.android.com/s/opensearch.xml"> <link rel="alternate" hreflang="en" href="https://developer.android.com/develop/background-work" /><link rel="alternate" hreflang="x-default" href="https://developer.android.com/develop/background-work" /><link rel="alternate" hreflang="ar" href="https://developer.android.com/develop/background-work?hl=ar" /><link rel="alternate" hreflang="bn" href="https://developer.android.com/develop/background-work?hl=bn" /><link rel="alternate" hreflang="zh-Hans" href="https://developer.android.com/develop/background-work?hl=zh-cn" /><link rel="alternate" hreflang="zh-Hant" href="https://developer.android.com/develop/background-work?hl=zh-tw" /><link rel="alternate" hreflang="fa" href="https://developer.android.com/develop/background-work?hl=fa" /><link rel="alternate" hreflang="fr" href="https://developer.android.com/develop/background-work?hl=fr" /><link rel="alternate" hreflang="de" href="https://developer.android.com/develop/background-work?hl=de" /><link rel="alternate" hreflang="id" href="https://developer.android.com/develop/background-work?hl=id" /><link rel="alternate" hreflang="it" href="https://developer.android.com/develop/background-work?hl=it" /><link rel="alternate" hreflang="ja" href="https://developer.android.com/develop/background-work?hl=ja" /><link rel="alternate" hreflang="ko" href="https://developer.android.com/develop/background-work?hl=ko" /><link rel="alternate" hreflang="pl" href="https://developer.android.com/develop/background-work?hl=pl" /><link rel="alternate" hreflang="pt-BR" href="https://developer.android.com/develop/background-work?hl=pt-br" /><link rel="alternate" hreflang="ru" href="https://developer.android.com/develop/background-work?hl=ru" /><link rel="alternate" hreflang="es-419" href="https://developer.android.com/develop/background-work?hl=es-419" /><link rel="alternate" hreflang="tr" href="https://developer.android.com/develop/background-work?hl=tr" /><link rel="alternate" hreflang="vi" href="https://developer.android.com/develop/background-work?hl=vi" /><title>About Background work  |  Android Developers</title> <meta property="og:title" content="About Background work  |  Android Developers"><meta name="description" content="Android allows your app to do work in the background. Here's how. "> <meta property="og:description" content="Android allows your app to do work in the background. Here's how. "><meta property="og:url" content="https://developer.android.com/develop/background-work"><meta property="og:image" content="https://developer.android.com/static/images/social/android-developers.png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="675"><meta property="og:locale" content="en"><meta name="twitter:card" content="summary_large_image"><script type="application/ld+json"> { "@context": "https://schema.org", "@type": "Article", "headline": "About Background work" } </script><script type="application/ld+json"> { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{ "@type": "ListItem", "position": 1, "name": "Develop", "item": "https://developer.android.com/develop" },{ "@type": "ListItem", "position": 2, "name": "Core areas", "item": "https://developer.android.com/develop/core-areas" },{ "@type": "ListItem", "position": 3, "name": "Background work", "item": "https://developer.android.com/develop/background-work" }] } </script> <link rel="stylesheet" href="/extras.css"></head> <body class="" template="page" theme="android-theme" type="article" appearance layout="docs" display-toc pending> <devsite-progress type="indeterminate" id="app-progress"></devsite-progress> <section class="devsite-wrapper"> <devsite-cookie-notification-bar></devsite-cookie-notification-bar><devsite-header role="banner"> <div class="devsite-header--inner nocontent"> <div class="devsite-top-logo-row-wrapper-wrapper"> <div class="devsite-top-logo-row-wrapper"> <div class="devsite-top-logo-row"> <button type="button" id="devsite-hamburger-menu" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Navigation menu button" visually-hidden aria-label="Open menu"> </button> <div class="devsite-product-name-wrapper"> <a href="/" class="devsite-site-logo-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Site logo" track-type="globalNav" track-name="androidDevelopers" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/lockup-dark-theme.svg" media="(prefers-color-scheme: dark)" class="devsite-dark-theme" alt="Android Developers"> <img src="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/lockup.svg" class="devsite-site-logo" alt="Android Developers"> </picture> </a> <span class="devsite-product-name"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item "> </li> </ul> </span> </div> <div class="devsite-top-logo-row-middle"> <div class="devsite-header-upper-tabs"> <devsite-tabs class="upper-tabs"> <nav class="devsite-tabs-wrapper" aria-label="Upper tabs"> <tab class="devsite-dropdown devsite-dropdown-full "> <a href="https://developer.android.com/get-started" track-metadata-eventdetail="https://developer.android.com/get-started" class="devsite-tabs-content gc-analytics-event android-dropdown-tab" track-type="nav" track-metadata-position="nav - essentials" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Essentials" track-name="essentials" > Essentials </a> <a href="#" role="button" aria-haspopup="true" aria-expanded="false" aria-label="Dropdown menu for Essentials" track-type="nav" track-metadata-eventdetail="https://developer.android.com/get-started" track-metadata-position="nav - essentials" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Essentials" track-name="essentials" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></a> <div class="devsite-tabs-dropdown" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column android-dropdown android-dropdown-primary android-dropdown-studio"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Gemini in Android Studio</li> <li class="devsite-nav-description">Your AI development companion for Android development. </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/gemini-in-android" track-type="nav" track-metadata-eventdetail="https://developer.android.com/gemini-in-android" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="gemini in android studio" tooltip class="button button-primary" > <div class="devsite-nav-item-title"> Learn more </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/studio" track-type="nav" track-metadata-eventdetail="https://developer.android.com/studio" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="gemini in android studio" tooltip class="button button-white" > <div class="devsite-nav-item-title"> Get Android Studio </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-launch"> <li class="devsite-nav-title" role="heading" tooltip>Get started</li> <li class="devsite-nav-description">Start by creating your first app. Go deeper with our training courses or explore app development on your own. </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/get-started/overview" track-type="nav" track-metadata-eventdetail="https://developer.android.com/get-started/overview" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get started" tooltip > <div class="devsite-nav-item-title"> Hello world </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/courses" track-type="nav" track-metadata-eventdetail="https://developer.android.com/courses" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get started" tooltip > <div class="devsite-nav-item-title"> Training courses </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/get-started/codelabs" track-type="nav" track-metadata-eventdetail="https://developer.android.com/get-started/codelabs" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get started" tooltip > <div class="devsite-nav-item-title"> Tutorials </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/kotlin" track-type="nav" track-metadata-eventdetail="https://developer.android.com/kotlin" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get started" tooltip > <div class="devsite-nav-item-title"> Kotlin for Android </div> </a> </li> <li class="devsite-nav-item"> <a href="https://play.google.com/console/about/guides/monetize/" track-type="nav" track-metadata-eventdetail="https://play.google.com/console/about/guides/monetize/" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get started" tooltip > <div class="devsite-nav-item-title"> Monetization with Play ↗️ </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-multiple-screens"> <li class="devsite-nav-title" role="heading" tooltip>Extend by device</li> <li class="devsite-nav-description">Build apps that give your users seamless experiences from phones to tablets, watches, and more. </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/adaptive-apps" track-type="nav" track-metadata-eventdetail="https://developer.android.com/adaptive-apps" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="extend by device" tooltip > <div class="devsite-nav-item-title"> Adaptive apps </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/wear" track-type="nav" track-metadata-eventdetail="https://developer.android.com/wear" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="extend by device" tooltip > <div class="devsite-nav-item-title"> Wear OS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/cars" track-type="nav" track-metadata-eventdetail="https://developer.android.com/cars" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="extend by device" tooltip > <div class="devsite-nav-item-title"> Android for Cars </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/tv" track-type="nav" track-metadata-eventdetail="https://developer.android.com/tv" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="extend by device" tooltip > <div class="devsite-nav-item-title"> Android TV </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/chrome-os" track-type="nav" track-metadata-eventdetail="https://developer.android.com/chrome-os" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="extend by device" tooltip > <div class="devsite-nav-item-title"> ChromeOS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/multi-device-development" track-type="nav" track-metadata-eventdetail="https://developer.android.com/multi-device-development" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="extend by device" tooltip > <div class="devsite-nav-item-title"> Cross-device SDK </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-platform"> <li class="devsite-nav-title" role="heading" tooltip>Build by category</li> <li class="devsite-nav-description">Learn to build for your use case by following Google's prescriptive and opinionated guidance. </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/games" track-type="nav" track-metadata-eventdetail="https://developer.android.com/games" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="build by category" tooltip > <div class="devsite-nav-item-title"> Games </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/media" track-type="nav" track-metadata-eventdetail="https://developer.android.com/media" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="build by category" tooltip > <div class="devsite-nav-item-title"> Camera & Media </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/social-and-messaging" track-type="nav" track-metadata-eventdetail="https://developer.android.com/social-and-messaging" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="build by category" tooltip > <div class="devsite-nav-item-title"> Social & messaging </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/health-and-fitness" track-type="nav" track-metadata-eventdetail="https://developer.android.com/health-and-fitness" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="build by category" tooltip > <div class="devsite-nav-item-title"> Health & Fitness </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/productivity" track-type="nav" track-metadata-eventdetail="https://developer.android.com/productivity" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="build by category" tooltip > <div class="devsite-nav-item-title"> Productivity </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/work/overview" track-type="nav" track-metadata-eventdetail="https://developer.android.com/work/overview" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="build by category" tooltip > <div class="devsite-nav-item-title"> Enterprise apps </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-stars"> <li class="devsite-nav-title" role="heading" tooltip>Get the latest</li> <li class="devsite-nav-description">Stay in touch with the latest releases throughout the year, join our preview programs, and give us your feedback. </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/latest-updates" track-type="nav" track-metadata-eventdetail="https://developer.android.com/latest-updates" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get the latest" tooltip > <div class="devsite-nav-item-title"> Latest updates </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/latest-updates/experimental" track-type="nav" track-metadata-eventdetail="https://developer.android.com/latest-updates/experimental" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get the latest" tooltip > <div class="devsite-nav-item-title"> Experimental updates </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/studio/preview" track-type="nav" track-metadata-eventdetail="https://developer.android.com/studio/preview" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get the latest" tooltip > <div class="devsite-nav-item-title"> Android Studio preview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/jetpack/androidx/versions" track-type="nav" track-metadata-eventdetail="https://developer.android.com/jetpack/androidx/versions" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get the latest" tooltip > <div class="devsite-nav-item-title"> Jetpack & Compose libraries </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/training/wearables/versions/4" track-type="nav" track-metadata-eventdetail="https://developer.android.com/training/wearables/versions/4" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get the latest" tooltip > <div class="devsite-nav-item-title"> Wear OS preview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/design-for-safety/privacy-sandbox" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design-for-safety/privacy-sandbox" track-metadata-position="nav - essentials" track-metadata-module="tertiary nav" track-metadata-module_headline="get the latest" tooltip > <div class="devsite-nav-item-title"> Privacy Sandbox </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown devsite-dropdown-full "> <a href="https://developer.android.com/design" track-metadata-eventdetail="https://developer.android.com/design" class="devsite-tabs-content gc-analytics-event android-dropdown-tab" track-type="nav" track-metadata-position="nav - design & plan" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Design & Plan" track-name="design & plan" > Design & Plan </a> <a href="#" role="button" aria-haspopup="true" aria-expanded="false" aria-label="Dropdown menu for Design & Plan" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design" track-metadata-position="nav - design & plan" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Design & Plan" track-name="design & plan" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></a> <div class="devsite-tabs-dropdown" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-layout"> <li class="devsite-nav-title" role="heading" tooltip>UI Design</li> <li class="devsite-nav-description">Design a beautiful user interface using Android best practices.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/design/ui" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design/ui" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="ui design" tooltip > <div class="devsite-nav-item-title"> Design for Android </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/design/ui/mobile" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design/ui/mobile" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="ui design" tooltip > <div class="devsite-nav-item-title"> Mobile </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/design/ui/large-screens" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design/ui/large-screens" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="ui design" tooltip > <div class="devsite-nav-item-title"> Large screens (e.g., tablets) </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/design/ui/widget" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design/ui/widget" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="ui design" tooltip > <div class="devsite-nav-item-title"> Widgets </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/design/ui/wear" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design/ui/wear" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="ui design" tooltip > <div class="devsite-nav-item-title"> Wear OS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/design/ui/tv" track-type="nav" track-metadata-eventdetail="https://developer.android.com/design/ui/tv" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="ui design" tooltip > <div class="devsite-nav-item-title"> Android TV </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-design"> <li class="devsite-nav-title" role="heading" tooltip>Architecture</li> <li class="devsite-nav-description">Design robust, testable, and maintainable app logic and services.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/topic/architecture/intro" track-type="nav" track-metadata-eventdetail="https://developer.android.com/topic/architecture/intro" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="architecture" tooltip > <div class="devsite-nav-item-title"> Introduction </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/topic/libraries/view-binding" track-type="nav" track-metadata-eventdetail="https://developer.android.com/topic/libraries/view-binding" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="architecture" tooltip > <div class="devsite-nav-item-title"> Libraries </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/guide/navigation/navigation-principles" track-type="nav" track-metadata-eventdetail="https://developer.android.com/guide/navigation/navigation-principles" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="architecture" tooltip > <div class="devsite-nav-item-title"> Navigation </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/topic/modularization" track-type="nav" track-metadata-eventdetail="https://developer.android.com/topic/modularization" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="architecture" tooltip > <div class="devsite-nav-item-title"> Modularization </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/training/testing/fundamentals" track-type="nav" track-metadata-eventdetail="https://developer.android.com/training/testing/fundamentals" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="architecture" tooltip > <div class="devsite-nav-item-title"> Testing </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-vitals"> <li class="devsite-nav-title" role="heading" tooltip>Quality</li> <li class="devsite-nav-description">Plan for app quality and align with Play store guidelines.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/quality" track-type="nav" track-metadata-eventdetail="https://developer.android.com/quality" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="quality" tooltip > <div class="devsite-nav-item-title"> Overview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/quality/core-value" track-type="nav" track-metadata-eventdetail="https://developer.android.com/quality/core-value" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="quality" tooltip > <div class="devsite-nav-item-title"> Core value </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/quality/user-experience" track-type="nav" track-metadata-eventdetail="https://developer.android.com/quality/user-experience" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="quality" tooltip > <div class="devsite-nav-item-title"> User experience </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/quality/technical" track-type="nav" track-metadata-eventdetail="https://developer.android.com/quality/technical" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="quality" tooltip > <div class="devsite-nav-item-title"> Technical quality </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/quality/privacy-and-security" track-type="nav" track-metadata-eventdetail="https://developer.android.com/quality/privacy-and-security" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="quality" tooltip > <div class="devsite-nav-item-title"> Security </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-security-2"> <li class="devsite-nav-title" role="heading" tooltip>Security</li> <li class="devsite-nav-description">Safeguard users against threats and ensure a secure Android experience.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/security" track-type="nav" track-metadata-eventdetail="https://developer.android.com/security" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="security" tooltip > <div class="devsite-nav-item-title"> Overview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/privacy-and-security/about" track-type="nav" track-metadata-eventdetail="https://developer.android.com/privacy-and-security/about" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="security" tooltip > <div class="devsite-nav-item-title"> Privacy </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/identity" track-type="nav" track-metadata-eventdetail="https://developer.android.com/identity" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="security" tooltip > <div class="devsite-nav-item-title"> Identity </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/security/fraud-prevention" track-type="nav" track-metadata-eventdetail="https://developer.android.com/security/fraud-prevention" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="security" tooltip > <div class="devsite-nav-item-title"> Fraud prevention </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-earth"> <li class="devsite-nav-title" role="heading" tooltip>Build for Billions</li> <li class="devsite-nav-description">Create the best experience for entry-level devices</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/build-for-billions" track-type="nav" track-metadata-eventdetail="https://developer.android.com/build-for-billions" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="build for billions" tooltip > <div class="devsite-nav-item-title"> Overview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/docs/quality-guidelines/build-for-billions" track-type="nav" track-metadata-eventdetail="https://developer.android.com/docs/quality-guidelines/build-for-billions" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="build for billions" tooltip > <div class="devsite-nav-item-title"> About new markets </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/guide/topics/androidgo" track-type="nav" track-metadata-eventdetail="https://developer.android.com/guide/topics/androidgo" track-metadata-position="nav - design & plan" track-metadata-module="tertiary nav" track-metadata-module_headline="build for billions" tooltip > <div class="devsite-nav-item-title"> Android (Go edition) </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown devsite-dropdown-full devsite-active "> <a href="https://developer.android.com/develop" track-metadata-eventdetail="https://developer.android.com/develop" class="devsite-tabs-content gc-analytics-event android-dropdown-tab" track-type="nav" track-metadata-position="nav - develop" track-metadata-module="primary nav" aria-label="Develop, selected" data-category="Site-Wide Custom Events" data-label="Tab: Develop" track-name="develop" > Develop </a> <a href="#" role="button" aria-haspopup="true" aria-expanded="false" aria-label="Dropdown menu for Develop" track-type="nav" track-metadata-eventdetail="https://developer.android.com/develop" track-metadata-position="nav - develop" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Develop" track-name="develop" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></a> <div class="devsite-tabs-dropdown" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column android-dropdown android-dropdown-primary android-dropdown-ai"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Build AI experiences</li> <li class="devsite-nav-description">Build AI-powered Android apps with Gemini APIs and more. </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/ai" track-type="nav" track-metadata-eventdetail="https://developer.android.com/ai" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="build ai experiences" tooltip class="button button-primary" > <div class="devsite-nav-item-title"> Get started </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-flag"> <li class="devsite-nav-title" role="heading" tooltip>Core areas</li> <li class="devsite-nav-description">Get the samples and docs for the features you need.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/samples" track-type="nav" track-metadata-eventdetail="https://developer.android.com/samples" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="core areas" tooltip > <div class="devsite-nav-item-title"> Samples </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/quick-guides" track-type="nav" track-metadata-eventdetail="https://developer.android.com/quick-guides" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="core areas" tooltip > <div class="devsite-nav-item-title"> Try Quick Guidesᵇᵉᵗᵃ </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/develop/ui" track-type="nav" track-metadata-eventdetail="https://developer.android.com/develop/ui" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="core areas" tooltip > <div class="devsite-nav-item-title"> User interfaces </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/guide/topics/permissions/overview" track-type="nav" track-metadata-eventdetail="https://developer.android.com/guide/topics/permissions/overview" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="core areas" tooltip > <div class="devsite-nav-item-title"> Permissions </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/develop/background-work" track-type="nav" track-metadata-eventdetail="https://developer.android.com/develop/background-work" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="core areas" tooltip > <div class="devsite-nav-item-title"> Background work </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/guide/topics/data" track-type="nav" track-metadata-eventdetail="https://developer.android.com/guide/topics/data" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="core areas" tooltip > <div class="devsite-nav-item-title"> Data and files </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/develop#core-areas" track-type="nav" track-metadata-eventdetail="https://developer.android.com/develop#core-areas" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="core areas" tooltip > <div class="devsite-nav-item-title"> All core areas ⤵️ </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-tools-2"> <li class="devsite-nav-title" role="heading" tooltip>Tools and workflow</li> <li class="devsite-nav-description">Use the IDE to write and build your app, or create your own pipeline.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/studio/write" track-type="nav" track-metadata-eventdetail="https://developer.android.com/studio/write" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="tools and workflow" tooltip > <div class="devsite-nav-item-title"> Write and debug code </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/build/gradle-build-overview" track-type="nav" track-metadata-eventdetail="https://developer.android.com/build/gradle-build-overview" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="tools and workflow" tooltip > <div class="devsite-nav-item-title"> Build projects </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/training/testing" track-type="nav" track-metadata-eventdetail="https://developer.android.com/training/testing" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="tools and workflow" tooltip > <div class="devsite-nav-item-title"> Test your app </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/topic/performance/overview" track-type="nav" track-metadata-eventdetail="https://developer.android.com/topic/performance/overview" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="tools and workflow" tooltip > <div class="devsite-nav-item-title"> Performance </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/tools" track-type="nav" track-metadata-eventdetail="https://developer.android.com/tools" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="tools and workflow" tooltip > <div class="devsite-nav-item-title"> Command-line tools </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/reference/tools/gradle-api" track-type="nav" track-metadata-eventdetail="https://developer.android.com/reference/tools/gradle-api" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="tools and workflow" tooltip > <div class="devsite-nav-item-title"> Gradle plugin API </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-multiple-screens"> <li class="devsite-nav-title" role="heading" tooltip>Device tech</li> <li class="devsite-nav-description">Write code for form factors. Connect devices and share data.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/guide/topics/large-screens/get-started-with-large-screens" track-type="nav" track-metadata-eventdetail="https://developer.android.com/guide/topics/large-screens/get-started-with-large-screens" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="device tech" tooltip > <div class="devsite-nav-item-title"> Large screens (e.g., tablets) </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/training/wearables" track-type="nav" track-metadata-eventdetail="https://developer.android.com/training/wearables" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="device tech" tooltip > <div class="devsite-nav-item-title"> Wear OS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/health-and-fitness/guides" track-type="nav" track-metadata-eventdetail="https://developer.android.com/health-and-fitness/guides" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="device tech" tooltip > <div class="devsite-nav-item-title"> Android Health </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/guide/topics/connectivity/cross-device-sdk/overview" track-type="nav" track-metadata-eventdetail="https://developer.android.com/guide/topics/connectivity/cross-device-sdk/overview" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="device tech" tooltip > <div class="devsite-nav-item-title"> Cross-device SDK </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/training/cars" track-type="nav" track-metadata-eventdetail="https://developer.android.com/training/cars" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="device tech" tooltip > <div class="devsite-nav-item-title"> Android for Cars </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/training/tv" track-type="nav" track-metadata-eventdetail="https://developer.android.com/training/tv" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="device tech" tooltip > <div class="devsite-nav-item-title"> Android TV </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/chrome-os/intro" track-type="nav" track-metadata-eventdetail="https://developer.android.com/chrome-os/intro" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="device tech" tooltip > <div class="devsite-nav-item-title"> ChromeOS </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-dropdown"> <ul class="devsite-tabs-dropdown-section android-dropdown-section-icon android-dropdown-section-icon-core-library"> <li class="devsite-nav-title" role="heading" tooltip>Libraries</li> <li class="devsite-nav-description">Browse API reference documentation with all the details.</li> <li class="devsite-nav-item"> <a href="https://developer.android.com/reference/packages" track-type="nav" track-metadata-eventdetail="https://developer.android.com/reference/packages" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="libraries" tooltip > <div class="devsite-nav-item-title"> Android platform </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/jetpack/androidx/explorer" track-type="nav" track-metadata-eventdetail="https://developer.android.com/jetpack/androidx/explorer" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="libraries" tooltip > <div class="devsite-nav-item-title"> Jetpack libraries </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.android.com/jetpack/androidx/releases/compose" track-type="nav" track-metadata-eventdetail="https://developer.android.com/jetpack/androidx/releases/compose" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="libraries" tooltip > <div class="devsite-nav-item-title"> Compose libraries </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/android/reference/packages" track-type="nav" track-metadata-eventdetail="https://developers.google.com/android/reference/packages" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="libraries" tooltip > <div class="devsite-nav-item-title"> Google Play services ↗️ </div> </a> </li> <li class="devsite-nav-item"> <a href="https://play.google.com/sdks" track-type="nav" track-metadata-eventdetail="https://play.google.com/sdks" track-metadata-position="nav - develop" track-metadata-module="tertiary nav" track-metadata-module_headline="libraries" tooltip > <div class="devsite-nav-item-title"> Google Play SDK index ↗️ </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://developer.android.com/distribute" track-metadata-eventdetail="https://developer.android.com/distribute" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - google play" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Google Play" track-name="google play" > Google Play </a> </tab> <tab > <a href="https://developer.android.com/community" track-metadata-eventdetail="https://developer.android.com/community" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - community" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Community" track-name="community" > Community </a> </tab> </nav> </devsite-tabs> </div> <devsite-search enable-signin enable-search enable-suggestions enable-query-completion project-name="Background work" tenant-name="Android Developers" > <form class="devsite-search-form" action="https://developer.android.com/s/results" method="GET"> <div class="devsite-search-container"> <button type="button" search-open class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Open search"></button> <div class="devsite-searchbox"> <input aria-activedescendant="" aria-autocomplete="list" aria-label="Search" aria-expanded="false" aria-haspopup="listbox" autocomplete="off" class="devsite-search-field devsite-search-query" name="q" placeholder="Search" role="combobox" type="text" value="" > <div class="devsite-search-image material-icons" aria-hidden="true"> </div> <div class="devsite-search-shortcut-icon-container" aria-hidden="true"> <kbd class="devsite-search-shortcut-icon">/</kbd> </div> </div> </div> </form> <button type="button" search-close class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Close search"></button> </devsite-search> </div> <devsite-appearance-selector></devsite-appearance-selector> <devsite-language-selector> <ul role="presentation"> <li role="presentation"> <a role="menuitem" lang="en" >English</a> </li> <li role="presentation"> <a role="menuitem" lang="de" >Deutsch</a> </li> <li role="presentation"> <a role="menuitem" lang="es_419" >Español – América Latina</a> </li> <li role="presentation"> <a role="menuitem" lang="fr" >Français</a> </li> <li role="presentation"> <a role="menuitem" lang="id" >Indonesia</a> </li> <li role="presentation"> <a role="menuitem" lang="it" >Italiano</a> </li> <li role="presentation"> <a role="menuitem" lang="pl" >Polski</a> </li> <li role="presentation"> <a role="menuitem" lang="pt_br" >Português – Brasil</a> </li> <li role="presentation"> <a role="menuitem" lang="vi" >Tiếng Việt</a> </li> <li role="presentation"> <a role="menuitem" lang="tr" >Türkçe</a> </li> <li role="presentation"> <a role="menuitem" lang="ru" >Русский</a> </li> <li role="presentation"> <a role="menuitem" lang="ar" >العربيّة</a> </li> <li role="presentation"> <a role="menuitem" lang="fa" >فارسی</a> </li> <li role="presentation"> <a role="menuitem" lang="bn" >বাংলা</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_cn" >中文 – 简体</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_tw" >中文 – 繁體</a> </li> <li role="presentation"> <a role="menuitem" lang="ja" >日本語</a> </li> <li role="presentation"> <a role="menuitem" lang="ko" >한국어</a> </li> </ul> </devsite-language-selector> <a class="devsite-header-link devsite-top-button button gc-analytics-event" href="https://developer.android.com/studio" data-category="Site-Wide Custom Events" data-label="Site header link" > Android Studio </a> <devsite-user enable-profiles id="devsite-user"> <span class="button devsite-top-button" aria-hidden="true" visually-hidden>Sign in</span> </devsite-user> </div> </div> </div> <div class="devsite-collapsible-section devsite-header-no-lower-tabs "> <div class="devsite-header-background"> <div class="devsite-product-id-row" > <div class="devsite-product-description-row"> <ul class="devsite-breadcrumb-list" aria-label="Lower header breadcrumb"> <li class="devsite-breadcrumb-item "> <a href="https://developer.android.com/develop/core-areas" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Core areas" > Core areas </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developer.android.com/develop/background-work" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="2" track-type="globalNav" track-name="breadcrumb" track-metadata-position="2" track-metadata-eventdetail="Background work" > Background work </a> </li> </ul> </div> </div> </div> </div> </div> </devsite-header> <devsite-book-nav scrollbars > <div class="devsite-book-nav-filter" > <span class="filter-list-icon material-icons" aria-hidden="true"></span> <input type="text" placeholder="Filter" aria-label="Type to filter" role="searchbox"> <span class="filter-clear-button hidden" data-title="Clear filter" aria-label="Clear filter" role="button" tabindex="0"></span> </div> <nav class="devsite-book-nav devsite-nav nocontent" aria-label="Side menu"> <div class="devsite-mobile-header"> <button type="button" id="devsite-close-nav" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Close navigation" aria-label="Close navigation"> </button> <div class="devsite-product-name-wrapper"> <a href="/" class="devsite-site-logo-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Site logo" track-type="globalNav" track-name="androidDevelopers" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/lockup-dark-theme.svg" media="(prefers-color-scheme: dark)" class="devsite-dark-theme" alt="Android Developers"> <img src="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/lockup.svg" class="devsite-site-logo" alt="Android Developers"> </picture> </a> <span class="devsite-product-name"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item "> </li> </ul> </span> </div> </div> <div class="devsite-book-nav-wrapper"> <div class="devsite-mobile-nav-top"> <ul class="devsite-nav-list"> <li class="devsite-nav-item"> <a href="/get-started" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Essentials" track-name="essentials" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Essentials" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Essentials </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Essentials" track-name="essentials" > <span class="devsite-nav-text" tooltip menu="Essentials"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Essentials"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/design" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Design & Plan" track-name="design & plan" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Design & Plan" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Design & Plan </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Design & Plan" track-name="design & plan" > <span class="devsite-nav-text" tooltip menu="Design & Plan"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Design & Plan"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/develop" class="devsite-nav-title gc-analytics-event devsite-nav-has-children devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Develop" track-name="develop" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Develop" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Develop </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Develop" track-name="develop" > <span class="devsite-nav-text" tooltip menu="Develop"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Develop"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/distribute" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Google Play" track-name="google play" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Play" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Play </span> </a> </li> <li class="devsite-nav-item"> <a href="/community" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Community" track-name="community" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Community" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Community </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: Android Studio" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android Studio </span> </a> </li> </ul> </div> <div class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="_book"> <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="Book nav link, pathname: /develop/core-areas" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/core-areas" ><span class="devsite-nav-text" tooltip>All core areas ⍈</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="Book nav link, pathname: /develop/background-work" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work" ><span class="devsite-nav-text" tooltip>About background work</span></a></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>Services</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services" ><span class="devsite-nav-text" tooltip>About services</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>Foreground services</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/services/foreground-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/foreground-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/foreground-services" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/services/fg-service-types" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/fg-service-types" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/fg-service-types" ><span class="devsite-nav-text" tooltip>Foreground service types</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/services/fg-service-timeout" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/fg-service-timeout" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/fg-service-timeout" ><span class="devsite-nav-text" tooltip>Foreground service timeout</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/develop/background-work/services/bound-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/bound-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/bound-services" ><span class="devsite-nav-text" tooltip>Bound services</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/services/aidl" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/aidl" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/aidl" ><span class="devsite-nav-text" tooltip>About AIDL</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>Background tasks</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks" ><span class="devsite-nav-text" tooltip>About background tasks</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>Keep the device awake</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/awake" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/awake" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/awake" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/awake/wakelock" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/awake/wakelock" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/awake/wakelock" ><span class="devsite-nav-text" tooltip>Set and manage wake locks</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/awake/screen-on" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/awake/screen-on" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/awake/screen-on" ><span class="devsite-nav-text" tooltip>Keep the screen on</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/optimize-battery" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/optimize-battery" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/optimize-battery" ><span class="devsite-nav-text" tooltip>Optimize battery use for task scheduling APIs</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/bg-work-restrictions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/bg-work-restrictions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/bg-work-restrictions" ><span class="devsite-nav-text" tooltip>System restrictions on background work</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/data-transfer-options" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/data-transfer-options" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/data-transfer-options" ><span class="devsite-nav-text" tooltip>Data transfer background task options</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/uidt" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/uidt" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/uidt" ><span class="devsite-nav-text" tooltip>User-initiated data transfer</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Asynchronous work</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/asynchronous" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/asynchronous" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/asynchronous" ><span class="devsite-nav-text" tooltip>About async work</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/asynchronous/java-threads" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/asynchronous/java-threads" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/asynchronous/java-threads" ><span class="devsite-nav-text" tooltip>Java threads</span></a></li><li class="devsite-nav-item"><a href="/kotlin/coroutines" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /kotlin/coroutines" track-type="bookNav" track-name="click" track-metadata-eventdetail="/kotlin/coroutines" ><span class="devsite-nav-text" tooltip>Coroutines ⍈</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/asynchronous/listenablefuture" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/asynchronous/listenablefuture" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/asynchronous/listenablefuture" ><span class="devsite-nav-text" tooltip>Listenable future</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>Persistent work</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent" ><span class="devsite-nav-text" tooltip>About persistent work</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Getting started</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/getting-started" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/getting-started" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/getting-started" ><span class="devsite-nav-text" tooltip>Getting started</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/getting-started/define-work" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/getting-started/define-work" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/getting-started/define-work" ><span class="devsite-nav-text" tooltip>Define your work requests</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>How to</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/how-to/states" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/how-to/states" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/how-to/states" ><span class="devsite-nav-text" tooltip>Work states</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/how-to/manage-work" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/how-to/manage-work" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/how-to/manage-work" ><span class="devsite-nav-text" tooltip>Manage work</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/how-to/chain-work" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/how-to/chain-work" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/how-to/chain-work" ><span class="devsite-nav-text" tooltip>Chain work together</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/how-to/long-running" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/how-to/long-running" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/how-to/long-running" ><span class="devsite-nav-text" tooltip>Support for long-running workers</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/how-to/observe" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/how-to/observe" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/how-to/observe" ><span class="devsite-nav-text" tooltip>Observe intermediate worker progress</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/how-to/update-work" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/how-to/update-work" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/how-to/update-work" ><span class="devsite-nav-text" tooltip>Update work</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>Threading</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/threading" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/threading" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/threading" ><span class="devsite-nav-text" tooltip>About threading</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/threading/worker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/threading/worker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/threading/worker" ><span class="devsite-nav-text" tooltip>Threading in Worker</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/threading/coroutineworker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/threading/coroutineworker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/threading/coroutineworker" ><span class="devsite-nav-text" tooltip>Threading in CoRoutineWorker</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/threading/rxworker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/threading/rxworker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/threading/rxworker" ><span class="devsite-nav-text" tooltip>Threading in RxWorker</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/threading/listenableworker" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/threading/listenableworker" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/threading/listenableworker" ><span class="devsite-nav-text" tooltip>Threading in ListenableWorker</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>Configuration</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/configuration/custom-configuration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/configuration/custom-configuration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/configuration/custom-configuration" ><span class="devsite-nav-text" tooltip>Custom WorkManager configurations</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>Migrate from legacy solutions</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/migrate-from-legacy/firebase" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/migrate-from-legacy/firebase" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/migrate-from-legacy/firebase" ><span class="devsite-nav-text" tooltip>Migrate from Firebase JobDispatcher</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/persistent/migrate-from-legacy/gcm" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/persistent/migrate-from-legacy/gcm" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/persistent/migrate-from-legacy/gcm" ><span class="devsite-nav-text" tooltip>Migrate from GCMNetworkManager</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Testing</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Asynchronous work</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/kotlin/coroutines/test" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /kotlin/coroutines/test" track-type="bookNav" track-name="click" track-metadata-eventdetail="/kotlin/coroutines/test" ><span class="devsite-nav-text" tooltip>Coroutines testing ⍈</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>Persistent work</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/testing/persistent/debug" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/testing/persistent/debug" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/testing/persistent/debug" ><span class="devsite-nav-text" tooltip>Debug WorkManager</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/testing/persistent/integration-testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/testing/persistent/integration-testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/testing/persistent/integration-testing" ><span class="devsite-nav-text" tooltip>Integration testing</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/testing/persistent/worker-impl" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/testing/persistent/worker-impl" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/testing/persistent/worker-impl" ><span class="devsite-nav-text" tooltip>Test worker implementation</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Broadcasts</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/broadcasts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/broadcasts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/broadcasts" ><span class="devsite-nav-text" tooltip>About broadcasts</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/background-tasks/broadcasts/broadcast-exceptions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/background-tasks/broadcasts/broadcast-exceptions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/background-tasks/broadcasts/broadcast-exceptions" ><span class="devsite-nav-text" tooltip>Implicit Broadcast Exceptions</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>Alarms</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/develop/background-work/services/alarms" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/alarms" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/alarms" ><span class="devsite-nav-text" tooltip>About alarms</span></a></li><li class="devsite-nav-item"><a href="/develop/background-work/services/alarms/schedule" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /develop/background-work/services/alarms/schedule" track-type="bookNav" track-name="click" track-metadata-eventdetail="/develop/background-work/services/alarms/schedule" ><span class="devsite-nav-text" tooltip>Schedule Alarms</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" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Performance </span> </a> </li> <li class="devsite-nav-item"> <a href="/tools" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Command-line tools" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Command-line tools </span> </a> </li> <li class="devsite-nav-item"> <a href="/reference/tools/gradle-api" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Gradle plugin API" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Gradle plugin API </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Device tech </span> </span> </li> <li class="devsite-nav-item"> <a href="/guide/topics/large-screens/get-started-with-large-screens" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Large screens (e.g., tablets)" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Large screens (e.g., tablets) </span> </a> </li> <li class="devsite-nav-item"> <a href="/training/wearables" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Wear OS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Wear OS </span> </a> </li> <li class="devsite-nav-item"> <a href="/health-and-fitness/guides" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Android Health" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android Health </span> </a> </li> <li class="devsite-nav-item"> <a href="/guide/topics/connectivity/cross-device-sdk/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="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"> <a href="/training/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="/training/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/intro" 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 devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Libraries </span> </span> </li> <li class="devsite-nav-item"> <a href="/reference/packages" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Android platform" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Android platform </span> </a> </li> <li class="devsite-nav-item"> <a href="/jetpack/androidx/explorer" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Jetpack libraries" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Jetpack libraries </span> </a> </li> <li class="devsite-nav-item"> <a href="/jetpack/androidx/releases/compose" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Compose libraries" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Compose libraries </span> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/android/reference/packages" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Play services ↗️" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Play services ↗️ </span> </a> </li> <li class="devsite-nav-item"> <a href="https://play.google.com/sdks" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Play SDK index ↗️" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Play SDK index ↗️ </span> </a> </li> </ul> </div> </div> </nav> </devsite-book-nav> <section id="gc-wrapper"> <main role="main" class="devsite-main-content" has-book-nav has-sidebar > <div class="devsite-sidebar"> <div class="devsite-sidebar-content"> <devsite-toc class="devsite-nav" role="navigation" aria-label="On this page" depth="2" scrollbars ></devsite-toc> <devsite-recommendations-sidebar class="nocontent devsite-nav"> </devsite-recommendations-sidebar> </div> </div> <devsite-content> <article class="devsite-article"> <div class="devsite-article-meta nocontent" role="navigation"> <ul class="devsite-breadcrumb-list" aria-label="Breadcrumb"> <li class="devsite-breadcrumb-item "> <a href="https://developer.android.com/" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Android Developers" > Android Developers </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developer.android.com/develop" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="2" track-type="globalNav" track-name="breadcrumb" track-metadata-position="2" track-metadata-eventdetail="Develop" > Develop </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developer.android.com/develop/core-areas" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="3" track-type="globalNav" track-name="breadcrumb" track-metadata-position="3" track-metadata-eventdetail="Core areas" > Core areas </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://developer.android.com/develop/background-work" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="4" track-type="globalNav" track-name="breadcrumb" track-metadata-position="4" track-metadata-eventdetail="Background work" > Background work </a> </li> </ul> <devsite-thumb-rating position="header"> </devsite-thumb-rating> </div> <h1 class="devsite-page-title" tabindex="-1"> About Background work </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <devsite-recommendations-dropdown class="nocontent"></devsite-recommendations-dropdown> <div class="devsite-article-body clearfix "> <p>Android applications should use background tasks when appropriate, and avoid doing everything on the app's main thread. In order to make the app both responsive for your users as well as a good citizen on the Android platform, take any blocking or long-running tasks off the main (UI) thread, and run them in the background instead. This includes tasks like decoding a bitmap, accessing storage, working on a machine learning (ML) model, or performing network requests.</p> <p>Things to understand about background work include:</p> <ul> <li><p>Understand <a href="/develop/background-work/background-tasks/asynchronous">Asynchronous work</a>. This document explains asynchronous work, and helps you understand the difference between asynchronous and persistent work.</p></li> <li><p><a href="/develop/background-work/background-tasks/persistent">Persistent work</a> is background work that remains scheduled through app restarts and system reboots.</p></li> <li><p>Effective use of <a href="/develop/background-work/background-tasks/broadcasts">broadcasts</a>. Much like the publish-subscribe design pattern, Android apps can send or receive broadcast messages from the Android system and other Android apps.</p></li> <li><p>How to use the different techniques necessary to <a href="/kotlin/coroutines/test">test asynchronous work</a> versus <a href="/develop/background-work/background-tasks/testing/persistent/debug">testing persistent work</a>.</p></li> </ul> <div class="wrap"> <h2 class="norule" id="videos" data-text="Videos" tabindex="-1">Videos</h2> <devsite-dynamic-content class="android-editorial-and-updates" fields="image origin title date" initial-results="6" items-across="3" query="origin:youtube+keyword:sensors|location" sortorder="-timestamp"> </devsite-dynamic-content> </div> <devsite-hats-survey class="nocontent" hats-id="onAFgYxTD0kxBYCLVTd0Z41p75CM" 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>. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.</p> <p>Last updated 2023-12-15 UTC.</p> </devsite-content-footer> <devsite-notification > </devsite-notification> <div class="devsite-content-data"> <template class="devsite-content-data-template"> [[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-12-15 UTC."],[],[]] </template> </div> </devsite-content> </main> <devsite-footer-promos class="devsite-footer"> <nav class="devsite-footer-promos nocontent" aria-label="Promotions"> <ul class="devsite-footer-promos-list"> <li class="devsite-footer-promo"> <a href="//x.com/AndroidDev" class="devsite-footer-promo-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer X Promo" > <picture> <source class="devsite-dark-theme" srcset="https://developer.android.com/_static/android/images/logo-x_dt.svg" media="(prefers-color-scheme: dark)" loading="lazy" alt="X"> <img class="devsite-footer-promo-icon" src="/_static/android/images/logo-x.svg" loading="lazy" alt="X"> </picture> <span class="devsite-footer-promo-label"> X </span> </a> <div class="devsite-footer-promo-description">Follow @AndroidDev on X</div> </li> <li class="devsite-footer-promo"> <a href="//www.youtube.com/user/androiddevelopers" class="devsite-footer-promo-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer YouTube Promo" > <picture> <source class="devsite-dark-theme" srcset="https://developer.android.com/_static/android/images/logo-youtube_dt.svg" media="(prefers-color-scheme: dark)" loading="lazy" alt="YouTube"> <img class="devsite-footer-promo-icon" src="//www.gstatic.com/images/icons/material/product/2x/youtube_48dp.png" loading="lazy" alt="YouTube"> </picture> <span class="devsite-footer-promo-label"> YouTube </span> </a> <div class="devsite-footer-promo-description">Check out Android Developers on YouTube</div> </li> <li class="devsite-footer-promo"> <a href="//www.linkedin.com/showcase/androiddev" class="devsite-footer-promo-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer LinkedIn Promo" > <picture> <source class="devsite-dark-theme" srcset="https://developer.android.com/_static/android/images/logo-linkedin_dt.svg" media="(prefers-color-scheme: dark)" loading="lazy" alt="LinkedIn"> <img class="devsite-footer-promo-icon" src="/_static/android/images/logo-linkedin.svg" loading="lazy" alt="LinkedIn"> </picture> <span class="devsite-footer-promo-label"> LinkedIn </span> </a> <div class="devsite-footer-promo-description">Connect with the Android Developers community on LinkedIn</div> </li> </ul> </nav> </devsite-footer-promos> <devsite-footer-linkboxes class="devsite-footer"> <nav class="devsite-footer-linkboxes nocontent" aria-label="Footer links"> <ul class="devsite-footer-linkboxes-list"> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">More Android</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="//www.android.com" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Android </a> </li> <li class="devsite-footer-linkbox-item"> <a href="//www.android.com/enterprise/" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > Android for Enterprise </a> </li> <li class="devsite-footer-linkbox-item"> <a href="//www.android.com/security-center/" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > Security </a> </li> <li class="devsite-footer-linkbox-item"> <a href="//source.android.com" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > Source </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/news" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 5)" > News </a> </li> <li class="devsite-footer-linkbox-item"> <a href="//android-developers.googleblog.com/" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 6)" > Blog </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/podcasts" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 7)" > Podcasts </a> </li> </ul> </li> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Discover</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="/games" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Gaming </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/ml" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > Machine Learning </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/health-and-fitness" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > Health & Fitness </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/media" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > Camera & Media </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/privacy" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 5)" > Privacy </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/training/connectivity/5g" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 6)" > 5G </a> </li> </ul> </li> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Android Devices</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="/large-screens" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Large screens </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/wear" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > Wear OS </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/chrome-os" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > ChromeOS devices </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/cars" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > Android for cars </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/tv" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 5)" > Android TV </a> </li> </ul> </li> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Releases</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="/about/versions/15" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Android 15 </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/about/versions/14" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > Android 14 </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/about/versions/13" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > Android 13 </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/about/versions/12" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > Android 12 </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/about/versions/11" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 5)" > Android 11 </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/about/versions/10" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 6)" > Android 10 </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/about/versions/pie" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 7)" > Pie </a> </li> </ul> </li> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Documentation and Downloads</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="/studio/intro" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Android Studio guide </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/guide" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > Developers guides </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/reference" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > API reference </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/studio" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > Download Studio </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/ndk" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 5)" > Android NDK </a> </li> </ul> </li> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Support</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="//issuetracker.google.com/issues/new?component=190923&template=841312" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Report platform bug </a> </li> <li class="devsite-footer-linkbox-item"> <a href="//issuetracker.google.com/issues/new?component=192697" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > Report documentation bug </a> </li> <li class="devsite-footer-linkbox-item"> <a href="//support.google.com/googleplay/android-developer" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > Google Play support </a> </li> <li class="devsite-footer-linkbox-item"> <a href="https://g.co/userresearch/androiddeveloperfooter" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > Join research studies </a> </li> </ul> </li> </ul> </nav> </devsite-footer-linkboxes> <devsite-footer-utility class="devsite-footer"> <div class="devsite-footer-utility nocontent"> <nav class="devsite-footer-sites" aria-label="Other Google Developers websites"> <a href="https://developers.google.com/" class="devsite-footer-sites-logo-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Google Developers Link"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/lockup-google-for-developers-dark-theme.svg" media="(prefers-color-scheme: none)" class="devsite-dark-theme" loading="lazy" alt="Google Developers"> <img class="devsite-footer-sites-logo" src="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/lockup-google-for-developers.svg" loading="lazy" alt="Google Developers"> </picture> </a> <ul class="devsite-footer-sites-list"> <li class="devsite-footer-sites-item"> <a href="//developer.android.com" class="devsite-footer-sites-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Android Link" > Android </a> </li> <li class="devsite-footer-sites-item"> <a href="//developer.chrome.com/home" class="devsite-footer-sites-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Chrome Link" > Chrome </a> </li> <li class="devsite-footer-sites-item"> <a href="//firebase.google.com" class="devsite-footer-sites-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Firebase Link" > Firebase </a> </li> <li class="devsite-footer-sites-item"> <a href="//cloud.google.com" class="devsite-footer-sites-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Google Cloud Platform Link" > Google Cloud Platform </a> </li> <li class="devsite-footer-sites-item"> <a href="//developers.google.com/products/" class="devsite-footer-sites-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer All products Link" > All products </a> </li> </ul> </nav> <nav class="devsite-footer-utility-links" aria-label="Utility links"> <ul class="devsite-footer-utility-list"> <li class="devsite-footer-utility-item "> <a class="devsite-footer-utility-link gc-analytics-event" href="//policies.google.com/privacy" data-category="Site-Wide Custom Events" data-label="Footer Privacy link" > Privacy </a> </li> <li class="devsite-footer-utility-item "> <a class="devsite-footer-utility-link gc-analytics-event" href="/license" data-category="Site-Wide Custom Events" data-label="Footer License link" > License </a> </li> <li class="devsite-footer-utility-item "> <a class="devsite-footer-utility-link gc-analytics-event" href="/distribute/marketing-tools/brand-guidelines" data-category="Site-Wide Custom Events" data-label="Footer Brand guidelines link" > Brand guidelines </a> </li> <li class="devsite-footer-utility-item glue-cookie-notification-bar-control"> <a class="devsite-footer-utility-link gc-analytics-event" href="#" data-category="Site-Wide Custom Events" data-label="Footer Manage cookies link" aria-hidden="true" > Manage cookies </a> </li> <li class="devsite-footer-utility-item devsite-footer-utility-button"> <span class="devsite-footer-utility-description">Get news and tips by email</span> <a class="devsite-footer-utility-link gc-analytics-event" href="/updates" data-category="Site-Wide Custom Events" data-label="Footer Subscribe link" > Subscribe </a> </li> </ul> <devsite-language-selector> <ul role="presentation"> <li role="presentation"> <a role="menuitem" lang="en" >English</a> </li> <li role="presentation"> <a role="menuitem" lang="de" >Deutsch</a> </li> <li role="presentation"> <a role="menuitem" lang="es_419" >Español – América Latina</a> </li> <li role="presentation"> <a role="menuitem" lang="fr" >Français</a> </li> <li role="presentation"> <a role="menuitem" lang="id" >Indonesia</a> </li> <li role="presentation"> <a role="menuitem" lang="it" >Italiano</a> </li> <li role="presentation"> <a role="menuitem" lang="pl" >Polski</a> </li> <li role="presentation"> <a role="menuitem" lang="pt_br" >Português – Brasil</a> </li> <li role="presentation"> <a role="menuitem" lang="vi" >Tiếng Việt</a> </li> <li role="presentation"> <a role="menuitem" lang="tr" >Türkçe</a> </li> <li role="presentation"> <a role="menuitem" lang="ru" >Русский</a> </li> <li role="presentation"> <a role="menuitem" lang="ar" >العربيّة</a> </li> <li role="presentation"> <a role="menuitem" lang="fa" >فارسی</a> </li> <li role="presentation"> <a role="menuitem" lang="bn" >বাংলা</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_cn" >中文 – 简体</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_tw" >中文 – 繁體</a> </li> <li role="presentation"> <a role="menuitem" lang="ja" >日本語</a> </li> <li role="presentation"> <a role="menuitem" lang="ko" >한국어</a> </li> </ul> </devsite-language-selector> </nav> </div> </devsite-footer-utility> <devsite-panel></devsite-panel> </section></section> <devsite-sitemask></devsite-sitemask> <devsite-snackbar></devsite-snackbar> <devsite-tooltip ></devsite-tooltip> <devsite-heading-link></devsite-heading-link> <devsite-analytics> <script type="application/json" analytics>[]</script> <script type="application/json" tag-management>{"at": "True", "ga4": [{"id": "G-QFRN08RN6E", "purpose": 0}], "ga4p": [{"id": "G-QFRN08RN6E", "purpose": 0}], "gtm": [{"id": "GTM-KMSWPCJ", "purpose": 0}], "parameters": {"internalUser": "False", "language": {"machineTranslated": "False", "requested": "en", "served": "en"}, "pageType": "article", "projectName": "Background work", "signedIn": "False", "tenant": "android", "recommendations": {"sourcePage": "", "sourceType": 0, "sourceRank": 0, "sourceIdenticalDescriptions": 0, "sourceTitleWords": 0, "sourceDescriptionWords": 0, "experiment": ""}, "experiment": {"ids": ""}}}</script> </devsite-analytics> <devsite-badger></devsite-badger> <android-fully-clickable target=" .android-case-study .devsite-landing-row-item, .android-grouped-resources .devsite-landing-row-item, .android-grouped-resources-primary .devsite-landing-row-item, .android-grouped-resources-secondary .devsite-landing-row-item, .android-guide-cards .devsite-landing-row-item, .android-illustrated-resources-index .devsite-landing-row-item, .android-illustrated-resources-primary .devsite-landing-row-item, .android-illustrated-resources-secondary .devsite-landing-row-item, .android-illustrated-resources-secondary-small .devsite-landing-row-item, .android-illustrated-resources-tertiary .devsite-landing-row-item, .android-illustrated-resources-tertiary-small .devsite-landing-row-item, .android-promo .devsite-landing-row-item, .android-quick-link, .android-samples .devsite-card-wrapper, .fully-clickable" watch=".android-samples, devsite-content"></android-fully-clickable> <script nonce="Jewm+X7Jw312opwwjcMW1Tr/1Km88A"> (function(d,e,v,s,i,t,E){d['GoogleDevelopersObject']=i; t=e.createElement(v);t.async=1;t.src=s;E=e.getElementsByTagName(v)[0]; E.parentNode.insertBefore(t,E);})(window, document, 'script', 'https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/js/app_loader.js', '[3,"en",null,"/js/devsite_app_module.js","https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625","https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android","https://android-dot-devsite-v2-prod.appspot.com",1,null,["/_pwa/android/manifest.json","https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/images/video-placeholder.svg","https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/favicon.svg","https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/android/images/lockup.svg","https://fonts.googleapis.com/css?family=Google+Sans:400,500,600,700|Google+Sans+Text:400,400italic,500,500italic,600,600italic,700,700italic|Roboto+Mono:400,500,700&display=swap"],1,null,[1,6,8,12,14,17,21,25,50,52,63,70,75,76,80,87,91,92,93,97,98,100,101,102,103,104,105,107,108,109,110,112,113,116,117,118,120,122,124,125,126,127,129,130,131,132,133,134,135,136,138,140,141,147,148,149,151,152,156,157,158,159,161,163,164,168,169,170,179,180,182,183,186,191,193,196],"AIzaSyAP-jjEJBzmIyKR4F-3XITp8yM9T1gEEI8","AIzaSyB6xiKGDR5O3Ak2okS4rLkauxGUG7XP0hg","developer.android.com","AIzaSyAQk0fBONSGUqCNznf6Krs82Ap1-NV6J4o","AIzaSyCCxcqdrZ_7QMeLCRY20bh_SXdAYqy70KY",null,null,null,["EngEduTelemetry__enable_engedu_telemetry","MiscFeatureFlags__emergency_css","Cloud__enable_cloud_shell_fte_user_flow","Cloud__enable_cloud_shell","BookNav__enable_tenant_cache_key","TpcFeatures__enable_required_headers","Analytics__enable_clearcut_logging","Profiles__enable_public_developer_profiles","Significatio__enable_by_tenant","Profiles__enable_dashboard_curated_recommendations","Profiles__enable_page_saving","MiscFeatureFlags__developers_footer_image","Experiments__reqs_query_experiments","Cloud__enable_legacy_calculator_redirect","Cloud__enable_llm_concierge_chat","Cloud__enable_cloudx_ping","Profiles__enable_completecodelab_endpoint","MiscFeatureFlags__developers_footer_dark_image","MiscFeatureFlags__enable_explain_this_code","MiscFeatureFlags__enable_project_variables","MiscFeatureFlags__enable_dark_theme","DevPro__enable_developer_subscriptions","Search__enable_ai_search_summaries","Cloud__enable_cloudx_experiment_ids","Cloud__enable_free_trial_server_call","TpcFeatures__enable_mirror_tenant_redirects","Profiles__enable_complete_playlist_endpoint","CloudShell__cloud_code_overflow_menu","Cloud__enable_cloud_dlp_service","Search__enable_suggestions_from_borg","MiscFeatureFlags__enable_firebase_utm","Concierge__enable_pushui","Profiles__enable_developer_profiles_callout","Search__enable_page_map","Search__enable_ai_eligibility_checks","Profiles__enable_release_notes_notifications","MiscFeatureFlags__enable_view_transitions","Profiles__require_profile_eligibility_for_signin","MiscFeatureFlags__enable_variable_operator","DevPro__enable_cloud_innovators_plus","Search__enable_dynamic_content_confidential_banner","Profiles__enable_profile_collections","Profiles__enable_awarding_url","Profiles__enable_recognition_badges","CloudShell__cloud_shell_button","Cloud__enable_cloud_facet_chat"],null,null,"AIzaSyBLEMok-5suZ67qRPzx0qUtbnLmyT_kCVE","https://developerscontentserving-pa.googleapis.com","AIzaSyCM4QpTRSqP5qI4Dvjt4OAScIN8sOUlO-k","https://developerscontentsearch-pa.googleapis.com",2,4,null,"https://developerprofiles-pa.googleapis.com",[3,"android","Android Developers","developer.android.com",null,"android-dot-devsite-v2-prod.appspot.com",null,null,[null,1,null,null,null,null,null,null,null,null,null,[1],null,null,null,null,null,null,[1],[1,null,null,[1,20],"/recommendations"],null,null,null,[1,null,1],[1,1,null,1,1]],null,[18,null,null,null,null,null,"/images/lockup.svg","/images/touchicon-180.png",null,null,null,null,null,null,null,null,null,null,null,null,null,1,null,null,null,"/images/lockup-dark-theme.svg",[]],[],null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,[6,1,14,15,20,22,23,28,29,37,43],null,[[null,null,1],[1,1]],[[null,null,null,null,null,null,null,[["G-QFRN08RN6E"],null,null,[["G-QFRN08RN6E",1]]],null,null,null,null,1],null,[[1,1],[2,2]]],null,4,null,null,null,null,null,null,null,null,null,null,null,null,null,"android.devsite.google"],null,"pk_live_5170syrHvgGVmSx9sBrnWtA5luvk9BwnVcvIi7HizpwauFG96WedXsuXh790rtij9AmGllqPtMLfhe2RSwD6Pn38V00uBCydV4m"]') </script> <devsite-a11y-announce></devsite-a11y-announce> </body> </html>

CINXE.COM

About Background work | Android Developers