This page lists updates made to this site beginning with the Android 12 release. To see changes made to Android 12, see Android 12 Release Notes.
The first important site change was the Android 12 documentation release in October 2021, presented on a site given a brand new look and feel, provided by a redesigned navigation with a fresh look to the homepage and new landing pages! Other site changes and updates are provided here on a monthly basis.
These are the May site changes. Locate regularly scheduled bulletins such as the Android Security Bulletins on their respective pages.
|Architecture||Migrated Boot Time Optimization from the partner site.|
|Migrated Android Kernel File System Support from the partner site.|
|Migrated GKI related Debugging from the partner site.|
|Migrated Develop Kernel Code for GKI from the partner site.|
|Migrated Vendor module guidelines from the partner site.|
|Updated The Generic Kernel Image (GKI) project with GKI information from the partner site.|
|Added GKI 1.0 overview for information on the GKI 1.0 phase of the GKI project.|
|Added high-level documentation on FIPS 140-3 certifiable GKI crypto module.|
|Removed information on the
|Updated the Enforce the KMI using module versioning section.|
| Removed the reference and documentation for
|Updated version numbers in Android Common Kernels.|
|Migrated Mainline Wi-Fi module from the partner site.|
|Updated Kernel Overview to include up-to-date glossary of terms and information of kernel branches.|
|Updated Matching Rules
for HAL about marking HALs optional with
|Added a new Using DebugFS in Android 12 page. This page was a part of Core Kernel Requirements.|
|Deleted the outdated Optimizing SquashFS page.|
|Deleted the outdated LLDB debugging page.|
|Automotive||Added an article to describe the new features and enhancements provided in Android 12L.|
|Deleted the outdated Images page.|
|Added details to the
|Build||Deleted the obsolete Building Kernels Manually page.|
|Updated the APIs tested section for
|Changed calibration test requirement for the field-of-view to be within +/-2 degree of the calibration value.|
|Updated ATS release notes for R29.|
|Updated CTS downloads for the May 2022 release.|
|Added 12L to the Release schedule and branch information for CTS development.|
|Added example code for using
|Display||Updated Retail Demo Mode.|
|Security||Added 2021 Android Enterprise Security white paper to public Security Reports.|
|Setup||Updated source code tags and build numbers in Codenames, Tags, and Build Numbers.|
|Tests||Updated Tradefed build instructions in Developing Tradefed.|
|Added documentation for multi-devices suite.|
These are the April site changes. Locate regularly scheduled bulletins such as the Android Security Bulletins on their respective pages.
|Architecture||Updated terminology in Android Common Kernels.|
|Added information on how to update and verify the update status of an API in Java SDK Library.|
|Removed Future Android Versions.|
|Added a new section on kernels of versions lower than 4.19.|
|Updated information on error handling in AIDL Backends.|
|Automotive||Added a new page for Device Management that describes enabling remote management of a vehicle running Android Automotive OS (AAOS) and updated What's New.|
|Fixed navigation in HMI Overview.|
|Restored image in Virtualization Architecture.|
|Bootloader||Added a new page for Version Information in AVB Properties.|
|Build||Updated information on builds for the HiKey 960 reference board.|
|Added a section on how to avoid duplication with
|Updated Bindgen Bindings Modules to reflect that
|Compatibility||Updated various pages under Android Platform Testing with inclusive language.|
|Added Xiaomi Pad 5 to supported tablets in Camera ITS-in-a-Box.|
|Updated ATS release notes for R28.|
|Updated camera ITS tests APIs.|
|Replaced the Adding a New Native Test Example with Adding New GoogleTests for language inclusion.|
|Updated the link to GoogleTest primer in Adding New GoogleTests.|
|Contribute||Specified reporting link for NDK compiler and build system issues in Reporting Bugs.|
|Added a section on CLDR in Submitting Patches.|
|Security||Updated Boot Flow.|
|Updated Trust Build.|
|Added description about
|Added description about precompiled SELinux policy in Building SELinux Policy.|
|Updated the security acknowledgements table in Android Security Acknowledgements.|
|Added instructions to update keys while using Android App links in Application Signing.|
|Setup||Updated source code tags and build numbers in Codenames, Tags, and Build Numbers.|
|Start||Updated Android Platform Glossary with inclusive language.|
These are the March site changes. Locate regularly scheduled bulletins such as the Android Security Bulletins on their respective pages.
Android 12 Release
Android 12 has been released. For more information, see the Android 12 and Android 12 Release Notes.
Other March site updates
|Architecture||Clarified that CPP IBinder reads still enforce nullability in AIDL annotations and AIDL backend.|
|Added fixed-size arrays to
|Updated code sample for nested type declarations
in AIDL in Android T (AOSP experimental) to note that
|Added unsigned integer property type to the system properties table.|
|Updated information about mDNS .local resolution.|
|Automotive||Added new page for Car UI Plugins.|
|Formatted Customizing Media and Implementing Radio with Media.|
|Updated links in Android Automotive 12 Release Details.|
|Fix Cloud Storage link to create the AVD image XML file.|
|Build||Added build information about the Qualcomm Robotics Board RB5 in Using Reference Boards.|
|Added new pages for Make Rules, Make Functions, Recursive Expansion, Shell Commands, Soong Configuration Variables and Override Statements issues in the Product and Board Configuration section for Android on Bazel.|
|Update Pixel kernel manifest to 12 in the branch names table.|
|Added description of the use of the
|Added useful tip about fastboot hanging issue.|
|Compatibility||Fixed the changelog links
to point to
|Fixed numbering changes in the Handheld requirements and the Device Administration sections.|
|Updated numbering on requirement removals.|
|Added information about the 12.1 branch release schedule.|
|Added information about CTS downloads for 12.1.|
|Connectivity||Added information that Android supports only the HTTP GET method while downloading the carrier certificate. HTTP POST is not supported.|
|Enterprise||Updated work profile.|
|Permissions||Added description of a role in Android Permissions.|
|Setup||Update field naming conventions for static final fields.|
|Update build numbers for security releases for 12.1.|
|Update platform codenames, versions and API level table for 12.1.|
|Added terms for presubmit and postsubmit tests to the glossary.|
|Storage||Clarification that SDCardFS is deprecated on devices that launch with Android 11 or higher.|
|Tests||Updated the manifest file snapshot to match current code.|
|Update ATS release notes for R27|
|Added section on enabling multi-host mode.|
|Correct section heading for system logging in Android Runtime (ART).|
These are the February site changes. Locate regularly scheduled bulletins such as the Android Security Bulletins on their respective pages.
Included information about changes to
|Added a detailed explanation of Sepolicy for AIDL HALs.|
Updated the example for
dealing with older interfaces
to reflect updates to the
Added packages that support customization through
|Revised and improved Troubleshooting Runtime Resource Overlays.|
|Build||New documentation on Starlark product and board configuration in Android on Bazel, Product and Board Configuration with Starlark, and Include and Inherit Statements in Starlark.|
|Added a page for the Tablet Sensor Fusion Box test rig.|
|Updated Android Test Station (ATS) release notes.|
|Connectivity||Listed an additional, supported US carrier (Cellcom) in IMS Service Entitlement.|
|Updated Passpoint (Hotspot 2.0) to reflect changes to the Passpoint R3 features.|
|Removed most references to "UTC time" (updated to "Unix epoch time" and "universal time") in the following pages:|
|Create||Updates to build numbers and instructions in Using Reference Boards|
|Setup||Fixed broken links in the Android Developer Codelab.|
These are the January site changes. Locate regularly scheduled bulletins such as the Android Security Bulletins on their respective pages.
|Architecture||Added information about the modular system components launched in Android 12, as described in the Modular system components section of the Android 12 Release Notes.|
|Automotive||Added Car UI Library Release Notes to describe changes to the Car UI libraries.|
Added more information to CameraX Vendor Extensions about the CameraX extensions vendor library and the Camera2 extensions API.
Additionally, added a page describing the CameraX Vendor Extensions Validation Tool.
|Compatibility||Fixed broken links in the Compatibility Definition Document.|
|Added a page about testing for ITS Accessories: Foldable Kit.|
|Updated with information about the scene2_c performance class tests.|
|Removed references to automated CTS Verifier (CTS-V) tests from Android UIConductor (UICD) test documentation. Users that would still like to run UICD tests can use the process outlined in Running UIConductor tests with ATS.|
|Updated Android Test Station (ATS) Release Notes.|
|Device Management for Enterprises||Revised Employing Work Profiles to improve clarity.|
|Media||Added a section on customized filepaths for transcoding to Compatible Media Transcoding.|
|Performance||Moved information about Low RAM configuration to Kernel Configuration for additional clarity.|
|Setup||Added Code of Conduct under Community.|
|Storage||Removed misleading mention of fileencryption v2 in SDCardFS Deprecation, as there aren't any cases where encryption policy v2 needs to be explicitly enabled.|
|Updates||Corrected the incremental build command in Building OTA Packages.|
These are the December site changes. Locate regularly scheduled bulletins such as the Android Security Bulletins on their respective pages.
|Architecture||Incremental File System: New sections added and edits made to show specific changes for Android 12 Kernel. Differences between Android 12 and Android 11 noted throughout as needed.|
|VINTF information updated to include new Inet HAL transport, under Manifest file schema section.|
|Automotive||Added Pixel 6 and Pixel 6 Pro information to Pixel in Development Platforms.
Also added new page, Spectatio: Automotive Test Framework
added a link to Android 12 patches on the S Release details page.
New section added to UX Foundation for Haptic Framework page: Audio-coupled haptics: Haptic Generator.
|Clarification added to Profile Guided Optimization (PGO) page stating
that apps can't write to
|Compatibility||On Camera ITS-in-a-Box, deleted the reference to parallel testing. It's not supported in the Android 12 Python 3 refactor.|
|Updated Camera ITS Tests to include descriptions of the
test groupings (by scene).
Compatibility Test Suite Downloads: Updates to the CTS Instant downloads for CTS-Dec-2021 Releases were added.
|Removed a broken link in VTS Dashboard Setup that was pointing to a nonexistent codelab.|
|Security||December Security Bulletin
page now available.
December AAOS Security Bulletin page now available.
December Pixel Security Bulletin updated with AOSP links.
Acknowledgements page updated with AOSP links.
|Setup||Generic System Images (GSI) was updated to make it current with the Android 12 release: Removed legacy GSI, and disabling verity boot information, documented changes on GSI for Android 12 and Android 11 throughout page.|
|Pixel 6 and Pixel 6 Pro were added to the device table under
Selecting a device build.
The Rust Modules page was updated to contain information about
|Information was added about how to prevent causing merge commits, under
the Handling repo errors
Build numbers have been updated in Codenames, Tags, and Build Numbers.
These are the site changes made for the month of November. Locate regularly scheduled bulletins such as the Android Security Bulletins on their respective pages.
and AIDL for HALs:
Updated information about supported types in AIDL backend and new
Rust backend information. Updated
|Loadable Kernel Modules,
Android Common Kernels,
and Generic Kernel Image:
Updated Loadable Kernel Modules module-signing section to show that signing isn't supported. Updated Android Common Kernel Test matrix table, and updated Boot image integration information.
|Android Automotive||Garage Mode: Added
new debugging details to Garage Mode page.
Using Vehicle Bound File Encryption: Added new content to the Using Vehicle Bound File Encryption page.
|Pixel 4a (5G) and Pixel 5
as Development Platforms: Removed the sentence referencing Pixel
3 and Pixel 4.
Android Automotive 11 Release Details and Android Automotive 12 Release Details: Added new release details to each page.
Added November updates. In
switched references for |
|Bootloader||Added GKI 2.0 boot.img integration information to
Enable the USB Gadget
Published the fbpack.py, fbpacktool.py, and packedstruct.py
pixel bootloader packer/unpacker scripts (temporarily, until the tool is available in AOSP).
|Compatibility||Sensor Fusion Box Details
provides updated production files (from 1.7 to 1.8), with a cleaned-up BOM and 3D file.
Camera ITS Tests: Updated AOSP docs show accurate chart distance requirement. Added
|Camera ITS-in-a-Box: Removed
Galaxy Tab A from the recommended tablets list.
Interpreting CTS Results: Added explanation for TF not saving partial results. Using CTS Verifier has UICC requirements added to verifier.
|ATest has updated ACloud usage (local-instance/local-image ONLY) for external users. The Android Test Station Release Notes have November additions. Camera HAL Testing Checklist has a new reference to test descriptions at Camera HAL.|
|Connectivity||Time Overview: Added clarification details for time zone settings. Clarification added to IMS Service Entitlement for the network traffic path, ImsServiceEntitlement app. Implementing IMS was updated to include information regarding carrier and device configurations. Quick Access Wallet has updated images; Secure NFC has updated screenshots.|
|Graphics||On Implementing Vulkan
various references to per-1.0 WSI naming were fixed.
Multiple Refresh Rate
has removed the reference to
|Media||Compatible Media Transcoding has additional information on behavior for devices without HDR-to-SDR encoding and improved description of device requirements for HEVC encoding|
|Permissions||Implementing USB HAL has been updated to mention Gadget 1.2 features.|
has removed the other reference to
|Setup||Building Kernels has Pixel 6 kernel-build information. Codenames, Tags, and Build Numbers lists updated build numbers for November EMR, updated build numbers for security releases 2021-11, and updated build numbers for Pixel 6 releases.|
|Debugging||HWAddressSanitizer has added a link to the Developer documentation. (See the note box at the top of the page.)|
Android 12 documentation made available on this newly designed site. The site redesign includes these updates to the site navigation:
- Docs dropdown menu: Hover over the Docs tab to see an overview of all the information found on the site.
- Expanded left navigation: Use the dynamic left navigation bar to explore sections without leaving the current page.
- New sections
|Architecture||Android Common Kernels
Updated KMI kernel compatibility description shows the new plan for KMI breaks.
Updated the terminology table show the max level and framework HAL deprecation schedules.
Added max-level and framework HAL deprecation schedule to the framework manifest example.
Added a note about nested types under Importing types in the AIDL Backends page and an example to Overview.
|Android Automotive||Simulate Networks in
Android Automotive OS
Added Simulate Networks in Android Automotive OS (new page).
|System Performance Tools
Added System Performance Tools (new page).
|User Interface Frameworks
Added User Interface Frameworks (new page).
Updated the customization guidelines.
|Implementing Custom User Types
Added Implementing Custom User Types (new page).
Added section Using CarAppFocusManager. This page now provides steps for using
|Compatibility||Android 12 Compatibility Definition
Updated Android CDD requirements (and affected documentation in the Compatibility section) for Android 12.
|Virtual Devices in Android Test Station
Added description about Acloud for virtual devices in ATS under Setting test resources.
|Test through Tradefed
Added new steps to retry isolation and configure global test filters to the Test through Tradefed page.
|Media||Compatible Media Transcoding
Added a new paragraph for Restrictions on requesting transcoded files.
Updated the build instructions for Android 12 under Downloading sources and build tools.
|Android Rust Patterns
Added new section for Rust-Java interop and Build definition to the Android Rust Patterns page.