Get Started | Android Open Source Project

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<div class="devsite-nav-item-title"> Release notes </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/whatsnew/latest-security-bulletins" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/whatsnew/latest-security-bulletins" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Latest security bulletins </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/whatsnew/latest-cdd" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/whatsnew/latest-cdd" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Latest Compatibility Definition Document (CDD) </div> </a> </li> <li class="devsite-nav-item"> <a 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<li class="devsite-nav-item"> <a href="https://source.android.com/docs/setup/test" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/setup/test" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Test </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/setup/create/coding-tasks" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/setup/create/coding-tasks" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Create </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/setup/contribute" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/setup/contribute" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Contribute </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/setup/community/cofc" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/setup/community/cofc" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Community </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/setup/reference" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/setup/reference" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Tools, build, and related reference </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Security</li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/security/overview" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/security/overview" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Overview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/security/bulletin" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/security/bulletin" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Bulletins </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/security/features" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/security/features" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Features </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/security/test/fuzz-sanitize" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/security/test/fuzz-sanitize" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Testing </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/security/best-practices" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/security/best-practices" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Best Practices </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-source-tabs-dropdown-column-small"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Core Topics</li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/architecture" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/architecture" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Architecture </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/audio" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/audio" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Audio </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/camera" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/camera" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Camera </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/connect" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/connect" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Connectivity </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/data" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/data" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Data </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/display" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/display" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Display </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/fonts/custom-font-fallback" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/fonts/custom-font-fallback" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Fonts </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/graphics" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/graphics" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Graphics </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/interaction" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/interaction" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Interaction </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/media" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/media" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Media </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/perf" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/perf" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Performance </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/permissions" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/permissions" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Permissions </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/power" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/power" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Power </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/runtime" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/runtime" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Runtime </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/settings" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/settings" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Settings </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/storage" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/storage" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Storage </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/tests" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/tests" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Tests </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/ota" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/ota" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Updates </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/core/virtualization" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/core/virtualization" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="core topics" tooltip > <div class="devsite-nav-item-title"> Virtualization </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column android-source-tabs-dropdown-column-small"> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Compatibility</li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/compatibility/cdd" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/compatibility/cdd" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="compatibility" tooltip > <div class="devsite-nav-item-title"> Compatibility Definition Document (CDD) </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/compatibility/cts" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/compatibility/cts" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="compatibility" tooltip > <div class="devsite-nav-item-title"> Compatibility Test Suite (CTS) </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Android Devices</li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/devices/cuttlefish" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/devices/cuttlefish" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="compatibility" tooltip > <div class="devsite-nav-item-title"> Cuttlefish </div> </a> 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tooltip>Tools, build, and related reference</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/docs/setup/reference" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/setup/reference" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/setup/reference" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/docs/setup/reference/androidbp" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/setup/reference/androidbp" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/setup/reference/androidbp" ><span class="devsite-nav-text" tooltip>Android.bp file format</span></a></li><li class="devsite-nav-item"><a href="/docs/setup/reference/bazel-support" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide 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> Permissions </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/core/power" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Power" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Power </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/core/runtime" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Runtime" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Runtime </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/core/settings" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Settings" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span 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class="devsite-landing-row devsite-landing-row-1-up devsite-landing-row-hero devsite-landing-row-50 devsite-landing-row-no-image-background devsite-landing-row-padding-large android-decorative-media android-hero-index android-row-background-grey-900 android-row-dark-background-grey-900" header-position="top" > <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item" description-position="bottom" > <div class="devsite-landing-row-item-media "> <figure class="devsite-landing-row-item-image"> <picture> <img alt="" src="https://developer.android.com/images/cluster-illustrations/academy-for-app-success-16-9.svg" srcset="https://developer.android.com/images/cluster-illustrations/academy-for-app-success-16-9.svg" sizes="(max-width: 600px) 100vw, (max-width: 840px) 50vw, 708px" fetchpriority="high"> </picture> </figure> </div> <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 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href="https://source.android.com/docs/setup/create/coding-tasks"> Customize and compile Android </a> </h3> <div class="devsite-landing-row-item-description-content"> Create and compile your own customizations to the Android OS. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <div class="devsite-landing-row-item-labels"> <span class=" " >Contribute</span> </div> <h3 id="submit-feedback-and-fixes" data-text="Submit feedback and fixes" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/setup/contribute"> Submit feedback and fixes </a> </h3> <div class="devsite-landing-row-item-description-content"> Submit your own contributions to the Android Open Source Project. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" 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