Android Automotive 25Q2  |  Android Open Source Project Skip to main content Docs What's new? Release notes Latest security bulletins Latest Compatibility Definition Document (CDD) Site updates Getting Started About Start Download Builds Test Create Contribute Community Tools, build, and related reference Security Overview Bulletins Features Testing Best Practices Core Topics Architecture Audio Camera Connectivity Data Display Fonts Graphics Interaction Media Performance Permissions Power Runtime Settings Storage Tests Updates Virtualization Compatibility Compatibility Definition Document (CDD) Compatibility Test Suite (CTS) Android Devices Cuttlefish Enterprise TV Automotive Overview Software Defined Vehicle In-vehicle Infotainment Release Details Reference HIDL HAL Trade Federation Security Test Suite Android Code Search / English Deutsch Español – América Latina Français Indonesia Italiano Polski Português – Brasil Tiếng Việt Türkçe Русский עברית العربيّة فارسی हिंदी বাংলা ภาษาไทย 中文 – 简体 中文 – 繁體 日本語 한국어 Sign in Documentation What's New? Getting Started Security Core Topics Compatibility Android Devices Automotive Reference Docs More What's New? Getting Started Security Core Topics Compatibility Android Devices Automotive Reference Android Code Search Overview What's new? What is Android Automotive? Terminology Software defined vehicle Overview Terminology Get started Overview Development environment Local development Cloud development Overview Organization setup Code location Download, build, and run IDE setup Access GitHub repositories Understand AAOS SDV System architecture SDV architecture Key concepts Logical architecture Service bundle naming conventions Configure the Orchestrator Service bundle identity Time sync Health monitoring Quality of service scheduling Control vehicle and power management Security concepts Authorization Overview Deployment Authorization policy Enforcement Debug permissions violations VM-level authorization policy VM identity and attestation Overview SDV profile for DICE vvmconfig and vvmtruststore Mesh status and provisioning Device trust Update concepts Service bundle updates A/B system updates Update Manager OEM AB partition updates Develop SDV services Quick start: Create and execute SDV service bundles Vehicle Services IDL (VSIDL) Overview Define messages and RPC services Define service architecture Generate middleware Implement business logic Build and deploy service bundles Automatic catalog updates and LSP integration Language specification SDV VSIDL compatibility guidelines VSIDL Provider for reflection Service bundle metadata Core code samples Handle suspend and resume Work with Automotive Services Overview Configuration and calibration Diagnostics User preferences architecture and implementation guide Asynchronous Rust Platform integration guides SDV Core integration Integration guide Guest system (VM image) requirements SDV Core bootloader APEX signing SDV Media integration Overview SDV Media requirements Graphics rendering on SDV Media SDV Media: Manage displays Use cameras SDV on hardware SDV on QNX QVM sample configurations QVM sample configuration for SDV Core QVM sample configuration for SDV Media QVM sample configuration for SDV IVI VM identity and attestation SDV bootloader Android HLOS CDI handover Configure identity for native services SOME/IP integration guide Overview Write a SOME/IP mapping file Write a SOME/IP type definition Implement the SOME/IP stack Integrate SOME/IP with SDV Optimize performance Use the SDV Gateway on IVI The Generic Kernel Image (GKI) project Partition layout Test, debug, and verify performance Debug SDV Troubleshoot middleware API failures Use tracing to gain insights into system performance SELinux policies for device tests Detect security violations SDV system tests SDV Test Framework library SDV system test creation Solution guides Display Safety Overview Get started Code structure DriverUI HAR camera view HAR platform abstraction layer HAR graphics pipeline Audio chimes Performance tracing for HAR Safety design toolchain Telemetry Overview SDK Overview Rust telemetry client library Overview Rust telemetry client library API Configurable Publisher Registry library Java protobuf descriptor generator tool Metrics Configuration Generator Overview Deployment Vehicle signal catalogs API reference Metrics configuration concepts Data sources Configurable Publisher Registry Metrics configuration generation request JSON format Cloud Telemetry Simulation Overview Deployment guide User guide In-vehicle Infotainment Overview Guidelines for development Car service feature control App compat Car display compatibility Audio Overview Audio focus Car audio configuration Configurable audio policy engine Audio control HAL Multi-zone audio routing Car audio plugin service Volume management Connect an input device in AAOS Microphone input Audio power management Manage audio resources during suspend Audio configuration AAOS flags Windowing with Scalable UI Overview Implement advanced windowing Consider the app ecosystem Maximize test compliance with WindowManager invariants Configure advanced windowing Configure a panel Configure a variant Configure a transition Configure an event Configure an action Implement heads up notification panels Customize system bars Integrate Setup Wizard Camera Overview Android Camera Service Overview Enable multi-client cameras Extended View System Overview Event and frame notification mechanism Program camera control parameters Changes to camera and system configuration Frame metadata Automotive display proxy service Multi-camera support Vehicle camera HAL Migrate to Camera2 Overview Migrate to Camera2 Camera2 API mapping Car framework core Car Settings Overview Add Car Settings Rearrange Car Settings Distraction optimization in Car Settings Car Settings search indexing Dual pane customization Preference subtitles Customize status bar system icons Connectivity Configure internal Ethernet networks Bluetooth Per-application network selection (PANS) Maintain hotspots between driving sessions Device management for Automotive Displays and input Overview Monitor status Key input Instrument Cluster API OEM custom inputs Multi-Display Communications API Automotive Window Layering Driver distraction Driver distraction guidelines Car User Experience Restrictions rules Consume car driving state and UX restrictions Flash wear management Location Automotive location bypass allowlist policy Automotive Location Bypass API Get coarse location Notifications Overview Set up notifications Heads-up notifications Notification access and notification listener policy Throttle and suppress notifications Performance analysis Power Overview Power policy Power management Manage boot time Garage Mode Radio Overview Broadcast radio HAL Radio control implementation Set up remote access Rotary controller Overview Develop apps Develop apps without the Car UI library Integration guide for OEMs Security Overview Secure developer options Enable MACsec for Ethernet features Debug Restriction Controller integration guide Use vehicle bound file encryption Manufacturer guide for long-term Android security Vehicle system isolation OTA updates System UI Implement the System UI SystemUIOverlayWindow management system SystemUIOverlayWindow codelab Time Overview Configure AAOS time sources Automatic time detection Time zone options Location time zone detection Unbundled apps Overview Release notes Integrate unbundled apps AOSP host integration guide Integrate the AOSP host Media apps with Car App Library OEM design tokens Control Center reference app Overview Customize the reference app Technical details Integrate AppCards Overview Create an AppCard Configure an AppCard host Try the AppCard codelab App Lock Car Messenger Car UI library Overview Integrate the Car UI library into apps Customize apps Car UI plugins List of packages containing car-ui-lib Add custom fonts Customize Car UI preferences Customize the toolbar with runtime resource overlays Customization options for CarUiListItem Customize CarUiRecyclerView Car UI library release notes Appendix A, work with RROs Appendix B, customization Appendix C, minimum compatible version for Car UI Plugin API Dashcam Dialer Overview Technical details Customization guidelines Global configurable values Toolbar Debug and test Media Overview System components and user flows Implement radio with Media Customize media Implement a media card Integrate deep links to Media apps Users and accounts Multi-user support Foreground and background user system handling Manage users and accounts Remove packages for the system user User HAL properties Vehicle hardware abstraction layer (VHAL) Overview VHAL interface Property configurations Supported system properties Special properties SEAT and STEERING_WHEEL properties ADAS vehicle properties Reference implementation Debug VHAL Use VHAL with the native client HIDL VHAL HIDL VHAL migration guide HIDL VHAL interface Virtualization Overview Architecture Tools Reference platform Voice Voice assistant Tap-to-Read OEM custom inputs Voice interaction integration guide About voice interaction Integration flows App development Fulfill commands Test and debug Watchdog Overview Monitor flash memory usage Collect performance data Monitor system health Development tools Overview Android Virtual Device Android Virtual Device as a development platform Build your own cloud emulator Extend VHAL property descriptions in the emulator Emulator USB passthrough integration guide USB Port Reset API Pixel devices as development platforms System performance tools Testing tools and infrastructure Overview System performance tools User interface frameworks Network simulation Complete Automotive Tests in a Box (CATBox) Enable fuzzers Spectatio Torq Release details Overview Android Automotive 26Q2 Android Automotive 25Q4 Android Automotive 25Q2 Android Automotive 25Q1 Android Automotive 24Q4 Android Automotive 15 Android Automotive 14 QPR1 Android Automotive 14 Android Automotive 13 QPR3 Android Automotive 13 QPR2 Android Automotive 13 QPR1 Android Automotive 13 Android Automotive 12L Android Automotive 12 QPR3 Android Automotive 11 Unbundled apps What's new? Release notes Latest security bulletins Latest Compatibility Definition Document (CDD) Site updates Getting Started About Start Download Builds Test Create Contribute Community Tools, build, and related reference Security Overview Bulletins Features Testing Best Practices Core Topics Architecture Audio Camera Connectivity Data Display Fonts Graphics Interaction Media Performance Permissions Power Runtime Settings Storage Tests Updates Virtualization Compatibility Compatibility Definition Document (CDD) Compatibility Test Suite (CTS) Android Devices Cuttlefish Enterprise TV Automotive Overview Software Defined Vehicle In-vehicle Infotainment Release Details Reference HIDL HAL Trade Federation Security Test Suite Effective in 2026, to align with our trunk stable development model and ensure platform stability for the ecosystem, we will publish source code to AOSP in Q2 and Q4. For building and contributing to AOSP, use android-latest-release. The android-latest-release manifest branch will always reference the most recent release pushed to AOSP. For more information, see Changes to AOSP. AOSP Docs Automotive Android Automotive 25Q2 Stay organized with collections Save and categorize content based on your preferences. Important: The following content is not final and is subject to change. Google is pleased to share this Android 25Q2 release with Android Automotive partners. For Android 16, this Android Automotive 25Q2 release is compliant. We continue to fine tune features, aiming to recommend an upcoming release for OEMs. Release details This section summarizes major features and enhancements provided in the AAOS B release. These updates apply to Android16, API level 36. The Android Automotive 25Q2 release is compliant with Android 16. New features The 25Q2 release provides these new features. AAOS Framework Audio and radio: Audio control HAL improvements: To configure car audio features, use APIs instead of XML file. High definition (HD) radio Emergency Alert System (EAS): Pass EAS information to radio applications with an API. This applies to HD Radio (North America) and DAB EWS (European Union). AAudio built-in library: AAudio AAudio supports OEM-defined Audio Attributes tags to customize app behavior. For example, audio routing and volume management. Power management: Power state notifications to built-in processes: The availability of power state notifications to OEM built-in processes (beyond Android apps) is extended. Car framework: Dynamic configuration of vehicle properties: Support the dynamic configuration of minimum and maximum and of supported values in vehicle properties. Connectivity Networking: Minimal Telephony: A subset of the Android Telephony Hardware Abstraction Layer (HAL) for automotive OEMs to allow OEMs to use Android telephony on data-only devices (including TCUs). This reduces fragmentation and provides support for telephony functionality. Connectivity Messaging Upsell API: Enhanced SubscriptionManager to provide APIs that can expose a user's mobile data subscription status. For example, active, inactive, trial, and expiration date. Projected app support: Added support to let automotive OEMs configure the complete set of hostapd.conf parameters not available through the Android APIs. Added a disconnect reason to the SoftApCallback API so that OEMs can learn why clients disconnected from a Local Hotspot (LOHS). These features improve support for projected apps and reduce fragmentation. AAOS System UI and Experiences Scalable UI: This AAOS windowing framework provides OEMs with configurable components that let OEMs meet windowing requirements and facilitate custom experiences. VHAL properties Vehicle properties: Added new vehicle properties to communicate vehicle characteristics and state. Updated vehicle property constants from @SystemApi to public APIs to consolidate generated documentation at VehiclePropertyIDs. Any previously defined and documented permissions are still required to access vehicle property data. Third party-accessible vehicle properties: This features makes eight existing vehicle properties relevant to navigation, voice assistant, weather, and driving state available to third party app developers. To learn more, see Integrate with Google apps and services. Compliance Android Compliance was executed on the internal reference hardware. The test suites run for this release include CTS, CTS-V, ATS, STS, VTS and CTS on GSI. Except for the issues listed below, no known failures require a fix either in Android 16 code (android16-release) or to the Android 16 test branch (android16-tests-dev). Note: Fixes for known compliance issues are provided below and will be made available in the Android Open Source Project when we publish the next release. We aim to recommend an upcoming release. Test failing: CtsWindowManagerJetpackTestCases#MultiDisplayActivityEmbeddingPlaceholderTests Failure summary: One test fails in portrait display. When testing Activity embedding behaviors in Scalable UI builds that are based on windowing solutions that involve multiple root tasks each a WINDOWING_MODE_MULTI_WINDOW, known failures occur due to some activities launched in smaller bounds than expected, as in windowMetrics of the embedding rules. As a result, the placeholder was started and the test failed when launching an activity on the secondary display. The aosp/3659633 patch corrects windowing mode inheritance from multi-window rootTask. Test failing: CtsAutoFillServiceTestCases Failure summary: Two categories of known issues occur in the Scalable UI builds based on windowing solutions that involve multiple root tasks each of WINDOWING_MODE_MULTI_WINDOW: IME covers the Autofill fill dialog that prevents the buttons on the fill dialog from being pressed. You can temporarily disable the fill dialog with this platform ag/3664131 patch. When the second field is auto-filled, such as PASSWORD, the LoginActivity is behind decor_grip, and loses the input focus. Patches can be found in the following links: ag/3679541, ag/3675628, ag/3675627. Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates. Last updated 2026-06-17 UTC. [[["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 2026-06-17 UTC."],[],[]] Build Android repository Requirements Downloading Preview binaries Factory images Driver binaries Connect @Android on X @AndroidDev on X Android Blog Google Security Blog Platform on Google Groups Building on Google Groups Porting on Google Groups Get help Android Help Center Pixel Help Center www.android.com Google Mobile Services Stack Overflow Issue Tracker About Android Community Legal License Privacy Site feedback Manage cookies English Deutsch Español – América Latina Français Indonesia Italiano Polski Português – Brasil Tiếng Việt Türkçe Русский עברית العربيّة فارسی हिंदी বাংলা ภาษาไทย 中文 – 简体 中文 – 繁體 日本語 한국어