Android OS Source Documentation | Android Open Source Project

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class="devsite-nav-item"> <a href="https://source.android.com/docs/setup/download" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/setup/download" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Download </div> </a> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/setup/build" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/setup/build" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="what's new?" tooltip > <div class="devsite-nav-item-title"> Build </div> </a> </li> <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" 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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 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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 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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> </li> <li class="devsite-nav-item"> <a href="https://source.android.com/docs/devices/admin" track-type="nav" track-metadata-eventdetail="https://source.android.com/docs/devices/admin" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" 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<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> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded disabled> </devsite-toc> <div class="devsite-article-body clearfix "> <section 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" background="navy" 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/success-guide-16-9.svg" srcset="https://developer.android.com/images/cluster-illustrations/success-guide-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 id="android-os-documentation" data-text="Android OS Documentation" class="hide-from-toc no-link" tabindex="0"> Android OS Documentation </h3> <div class="devsite-landing-row-item-description-content"> Learn more about the OS that powers Android devices around the world. </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-1-up devsite-landing-row-50 devsite-landing-row-no-image-background devsite-landing-row-padding-small android-feature-callout" 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"> <a href="https://source.android.com/docs/whatsnew"> <picture> <img alt="" src="https://developer.android.com/images/cluster-illustrations/compose-16-9.svg" srcset="https://developer.android.com/images/cluster-illustrations/compose-16-9.svg" sizes="(max-width: 600px) 100vw, (max-width: 840px) 50vw, 708px" loading="lazy" > </picture> </a> </figure> </div> <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="whats-new" data-text="What's new?" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/whatsnew"> What's new? </a> </h3> <div class="devsite-landing-row-item-description-content"> Learn what's new with the Android operating system. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://source.android.com/docs/whatsnew" class="button " >Stay up-to-date</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-4-up devsite-landing-row-100 devsite-landing-row-padding-large android-featured-resources android-section-intro-sidecar-secondary android-xsmall-headings" background="light-blue" header-position="left" > <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header" icon-position="top" > <div class="devsite-landing-row-header-icon-container" size="large" > <picture> <img class="devsite-landing-row-header-icon" alt="" src="https://developer.android.com/images/picto-icons/actionable.svg" srcset="https://developer.android.com/images/picto-icons/actionable.svg" sizes="100vw" loading="lazy" > </picture> </div> <div class="devsite-landing-row-header-text"> <h2 id="get-started" data-text="Get started" tabindex="0"> Get started </h2> <div class="devsite-landing-row-description"> Android is an open source software stack created for a wide array of devices with different form factors. Learn more about building and contributing to the platform. </div> </div> <div class="devsite-landing-row-header-buttons"> <a href="https://source.android.com/docs/setup" class="button " >Build Android</a> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable android-" background="white" 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=" " >About</span> </div> <h3 id="explore-the-android-os-stack" data-text="Explore the Android OS stack" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/setup/about"> Explore the Android OS stack </a> </h3> <div class="devsite-landing-row-item-description-content"> Learn more about Android's history and the platform's structure. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >Start</span> </div> <h3 id="set-up-your-environment" data-text="Set up your environment" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/setup/start"> Set up your environment </a> </h3> <div class="devsite-landing-row-item-description-content"> Kick-start development and get your environment properly set up. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >Download</span> </div> <h3 id="get-the-android-source" data-text="Get the Android source" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/setup/develop"> Get the Android source </a> </h3> <div class="devsite-landing-row-item-description-content"> Learn more about source control tools and download the complete Android OS source code. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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> </div> </section> <section class="devsite-landing-row devsite-landing-row-1-up devsite-landing-row-50 devsite-landing-row-no-image-background devsite-landing-row-padding-xlarge android-feature-callout" 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"> <a href="https://source.android.com/docs/core"> <picture> <img alt="" src="https://developer.android.com/images/cluster-illustrations/compose-16-9.svg" srcset="https://developer.android.com/images/cluster-illustrations/compose-16-9.svg" sizes="(max-width: 600px) 100vw, (max-width: 840px) 50vw, 708px" loading="lazy" > </picture> </a> </figure> </div> <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="core-topics" data-text="Core topics" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/core"> Core topics </a> </h3> <div class="devsite-landing-row-item-description-content"> From the basic building blocks of an Android device to the more intricate, advanced features, learn about all the ways you can customize the Android OS. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://source.android.com/docs/core" class="button " >Customize Android</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-4-up devsite-landing-row-67 devsite-landing-row-padding-large android-featured-resources android-section-intro-sidecar-secondary android-xsmall-headings" background="green" header-position="left" > <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header" icon-position="top" > <div class="devsite-landing-row-header-icon-container" size="large" > <picture> <img class="devsite-landing-row-header-icon" alt="" src="https://developer.android.com/images/picto-icons/security.svg" srcset="https://developer.android.com/images/picto-icons/security.svg" sizes="100vw" loading="lazy" > </picture> </div> <div class="devsite-landing-row-header-text"> <h2 id="security" data-text="Security" tabindex="0"> Security </h2> <div class="devsite-landing-row-description"> Android incorporates industry-leading security features to keep the Android platform and ecosystem safe. Learn more about Android's robust security model and rigorous security program. </div> </div> <div class="devsite-landing-row-header-buttons"> <a href="https://source.android.com/docs/security" class="button " >Secure Android</a> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >About Security</span> </div> <h3 id="security-overview" data-text="Security overview" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/security/overview"> Security overview </a> </h3> <div class="devsite-landing-row-item-description-content"> The Android OS has robust security right out of the box. Learn more about each of the underlying security features built into the Android platform. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >bulletins</span> </div> <h3 id="security-bulletins" data-text="Security bulletins" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/security/bulletin"> Security bulletins </a> </h3> <div class="devsite-landing-row-item-description-content"> See fixes for possible issues affecting devices running Android, including details from specific device manufacturers. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >best practices</span> </div> <h3 id="best-practices" data-text="Best practices" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/security/best-practices"> Best practices </a> </h3> <div class="devsite-landing-row-item-description-content"> Follow best practices covering everything from organizational and operational security to user privacy and the entirety of the Android ecosystem. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >features</span> </div> <h3 id="security-features" data-text="Security features" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/security/features"> Security features </a> </h3> <div class="devsite-landing-row-item-description-content"> Android offers a variety of on-device security features you can implement to build the most secure devices possible. </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-1-up devsite-landing-row-50 devsite-landing-row-no-image-background devsite-landing-row-padding-xlarge android-feature-callout" 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"> <a href="https://source.android.com/docs/compatibility"> <picture> <img alt="" src="https://developer.android.com/images/cluster-illustrations/certificate.svg" srcset="https://developer.android.com/images/cluster-illustrations/certificate.svg" sizes="(max-width: 600px) 100vw, (max-width: 840px) 50vw, 708px" loading="lazy" > </picture> </a> </figure> </div> <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="compatibility" data-text="Compatibility" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/compatibility"> Compatibility </a> </h3> <div class="devsite-landing-row-item-description-content"> To provide your Android users with a coherent experience as they use your device alongside other Android devices in the ecosystem, apply these established standards to your Android implementation. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://source.android.com/docs/compatibility" class="button " >Go to Compatibility</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-4-up devsite-landing-row-67 devsite-landing-row-padding-large android-featured-resources android-section-intro-sidecar-secondary android-xsmall-headings" background="navy" header-position="left" > <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header" icon-position="top" > <div class="devsite-landing-row-header-icon-container" size="large" > <picture> <img class="devsite-landing-row-header-icon" alt="" src="https://developer.android.com/images/spot-icons/car.svg" srcset="https://developer.android.com/images/spot-icons/car.svg" sizes="100vw" loading="lazy" > </picture> </div> <div class="devsite-landing-row-header-text"> <h2 id="automotive" data-text="Automotive" tabindex="0"> Automotive </h2> <div class="devsite-landing-row-description"> The Android Automotive OS (AAOS) is a base Android platform that runs a preinstalled IVI system as well as optional Android apps developed by second and third parties. See the development and testing tools you can use to build automotive apps alongside our expansive set of guidelines for app development. </div> </div> <div class="devsite-landing-row-header-buttons"> <a href="https://source.android.com/docs/automotive/start/what_automotive" class="button " >Learn more</a> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >Guidelines</span> </div> <h3 id="develop-apps" data-text="Develop apps" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/automotive/guidelines"> Develop apps </a> </h3> <div class="devsite-landing-row-item-description-content"> Learn about our extensive ecosystem of guidelines specific to the development of apps for cars. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >Tools</span> </div> <h3 id="development" data-text="Development" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/automotive/dev-tools"> Development </a> </h3> <div class="devsite-landing-row-item-description-content"> Read about the tools we provide to support your development of AAOS-based apps. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >Tools</span> </div> <h3 id="testing-and-infrastructure" data-text="Testing and infrastructure" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/automotive/tools"> Testing and infrastructure </a> </h3> <div class="devsite-landing-row-item-description-content"> See the scalable infrastructure and comprehensive set of testing tools we provide for you to maximize your efficiency and ensure compliance. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media fully-clickable" background="white" 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=" " >Releases</span> </div> <h3 id="details" data-text="Details" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/automotive/start/releases"> Details </a> </h3> <div class="devsite-landing-row-item-description-content"> See details for the most recent releases of AAOS. </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-2-up devsite-landing-row-no-image-background android-promo" header-position="top" > <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item fully-clickable" background="green" description-position="left" > <div class="devsite-landing-row-item-media "> <figure class="devsite-landing-row-item-image"> <a href="https://source.android.com/docs/devices"> <picture> <img alt="" src="https://developer.android.com/images/picto-icons/platform.svg" srcset="https://developer.android.com/images/picto-icons/platform.svg" sizes="(max-width: 600px) 100vw, (max-width: 840px) 50vw, 708px" loading="lazy" > </picture> </a> </figure> </div> <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <div class="devsite-landing-row-item-labels"> <span class=" " >Android Devices</span> </div> <h3 id="more-android-devices" data-text="More Android devices" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/docs/devices"> More Android devices </a> </h3> <div class="devsite-landing-row-item-description-content"> Beyond mobile devices, the Android OS serves as a platform for unified corporate networks and entertainment equipment. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://source.android.com/docs/devices" class="button " >Go to Android Devices</a> </div> </div> </div> </div> <div class="devsite-landing-row-item fully-clickable" background="blue" description-position="left" > <div class="devsite-landing-row-item-media "> <figure class="devsite-landing-row-item-image"> <a href="https://source.android.com/reference"> <picture> <img alt="" src="https://developer.android.com/images/picto-icons/core-library.svg" srcset="https://developer.android.com/images/picto-icons/core-library.svg" sizes="(max-width: 600px) 100vw, (max-width: 840px) 50vw, 708px" loading="lazy" > </picture> </a> </figure> </div> <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <div class="devsite-landing-row-item-labels"> <span class=" " >Reference</span> </div> <h3 id="api-reference" data-text="API Reference" class="hide-from-toc no-link" tabindex="0"> <a href="https://source.android.com/reference"> API Reference </a> </h3> <div class="devsite-landing-row-item-description-content"> See the API reference documentation for the APIs and frameworks available for the Android OS, including HIDL, HAL, and Trade Fed. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://source.android.com/reference" class="button " >Go to Reference</a> </div> </div> </div> </div> </div> </div> </section> </div> <div class="devsite-floating-action-buttons"> </div> </article> 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