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. This site offers 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.

Android 6.0 Updates Available — see details below

What's New

Android Resources

Android Community now includes a collection of Resources for contributors, developers, users, and security experts.

Received Feedback Implemented

Thanks to contributors who have submitted input using the Send Feedback button, Power Values now notes cpu.active represents the power used by the CPU rails when running at different speeds and explains why power profile values are given in current (amps). Building Kernels describes how to locate the correct filename for each kernel, while Setting up CTS more clearly defines compatible devices for the purposes of testing.

Kernel Networking Unit Tests

Kernel Networking Unit Tests describe a suite of tests provided by Android engineering to help ensure the device kernel will properly support the Android networking stack.

Logging Mode Optional When Verifying Boot

Verifying Boot now makes it clear logging mode does not have to be implemented, and dm-verity may be kept in enforcing mode.

Bluetooth LE Beacons CTS Guidance

Bluetooth LE beacons can be used to test the compatibility of Bluetooth low energy features on Android devices.

Audio Data Formats, MIDI Architecture, Related Updates

New information is available about Audio Data Formats and the MIDI Architecture. Also updated are Latency Measurements and Audio Terminology. It also is noted that Android indirectly supports MIDI 1.0 via an external adapter.

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.

Make Secure

Follow these examples and instructions to harden your Android devices against malicious attacks. Find out how the Android security program works and learn to implement the latest features.

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

Use the Send Feedback button at the bottom of any page to request improvements to the content or identify errors. In addition, 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.