Welcome to 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. Here you can find the information and source code you need to learn more about the Android platform. From there you can create custom variants of the Android software stack, port devices and accessories to the Android platform, and ensure your devices are compatible with the Android compatibility definition.

What's New

Devices diagrams and other figures

Diagrams and other figures within Devices have been redesigned to become more clear and adhere to Android’s material design theme.

Submitting Patches

The Resolving sync conflicts section of Submitting Patches has been updated to replace an outdated git rebase command with: repo rebase

Lollipop API level, build tag

The latest Lollipop API level and build tag have been updated to 22 and LMY47D, respectively.

Google Mobile Services inquiry form

Prospective Google Mobile Services (GMS) partners now have an online inquiry form to request a GMS license.

Dalvik constraints

The Android Runtime (ART) team has released a list of syntactical and semantical constraints to help construct valid .dex files supported by the runtime.

64-bit build instructions

Detailed instructions for building Android on a 64-bit architecture have been added to the Source tab of the site. These instructions cover product configuration, module definition, the install path, and more.

OpenGL ES graphics diagnostics

The site now contains a user guide for the GPU testing suite drawElements Quality Program (deqp). The guide offers an overview of the suite and instructions for porting and building the test modules.

Getting Started

Explore the Source

Get the complete Android platform and modify and build it to suit your needs. You can also contribute to the Android Open Source Project (AOSP) repository to make your changes available to everyone else in the Android ecosystem.

Android framework summary

Port Android to Devices

Port the latest Android platform and create compelling devices that your customers want.

Build Accessories

Sometimes, a device can't do it all. Tap into Android's open accessory standard and build accessories to complement the wide variety of Android-powered devices.

Get Compatible

Being Android-compatible lets you offer custom features but still give users and developers a consistent and standard experience across all Android-powered devices. Android provides guidance and a test suite to verify your Android compatibility.

Help this Site

Please note, source.android.com is maintained in the Android Open Source Project. See the docs/source.android.com project log in AOSP for the complete list of changes to this site. Contribute your own updates to that same project and help maintain source.android.com.