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

Guidelines offered for configuring ART

Android engineering offers detailed guidelines for configuring the Android runtime (ART) with build and compilation options including compilation filters.

Audio introduces example FIFO implementation and latency test app

The Audio team has added an example non-blocking FIFO implementation specifically designed for application code and an example implementation of the Larsen test called slesTestFeedback.cpp.

Nexus 7 and Nexus 10 build tag updated

The LRX22G build tag now applies to Nexus 10 and the flo variant of Nexus 7.

Android 5.0 CDD released

The 5.0 version of the Android Compatibility Definition Document (CDD) has been published.

Nexus 5 kernel instructions fixed

The Identifying kernel version instructions for Nexus 5 (hammerhead) have been updated to repair an error.

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 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.