9 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.

Design compatible devices

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 input. With an ever-changing ecosystem, we need your help to stay fresh. Please 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 9 Documentation

Android 9 has been released! This site includes documentation for implementing the features, improvements, and enhancements in the newest version of Android.

Site Updates

This site has been overhauled to make it easier for you to navigate, search, and read its ever-growing set of information. Check out our reorganized sections and new navigation.

August Security Bulletins

The August 2018 Android and Pixel/Nexus Security Bulletins have been published along with links to associated fixes and new build numbers to support the August security release.