8.1 interfaces and architecture

Port the latest Android platform using simple HIDL interfaces to create compelling devices for your customers.

Securing Android is essential

Find out how the Android security program works and learn how to implement the latest features.

Get compatible, get apps

Offer a consistent experience with other Android-powered devices and get the ability to include more apps.

About the Android Open Source Project

Android is an open source software stack for a wide range of mobile devices and a corresponding open source project led by Google. This site and the Android Open Source Project (AOSP) repository offer the information and source code you need to create custom variants of the Android stack, port devices and accessories to the Android platform, and ensure your devices meet compatibility requirements.

We also wanted to make sure there was no central point of failure, where one industry player could restrict or control the innovations of any other. The result is a full, production-quality operating system for consumer products with source code open for customization and porting. And now this site is available in China at source.android.google.cn.

As the AOSP documentation site, we seek your contributions. With an ever-changing ecosystem, we need your help to stay fresh. You may make your own fixes directly to the source files by following the instructions in our README. You may also use the Site Feedback link at the bottom of any page to report bugs and offer suggestions for enhancement. See the site’s changelog for a detailed view of all updates.


Android 2017 Year in Review

The Android Security 2017 Year in Review covers everything that happened in Android Security in 2017.

March Security Bulletins

The March 2018 Android and Pixel/Nexus Security Bulletins have been published to support the March security release.

ART DEX bytecode improvements

Android runtime (ART) now includes bytecode documentation for const-method-handle and const-method-type, as well as updates to invoke-polymorphic.