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Android APIs

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.

What's New

Android 6.0, 5.1, and 5.0 CTS Downloads

Android 6.0 R8, 5.1 R9, and 5.0 R8 Compatibility Test Suite (CTS) and CTS Verifier are available for Download.

July Android Security Bulletin

The July 2016 Android Security Bulletin has been published along with links to associated fixes. In addition, new build numbers have been published for Nexus 5, Nexus 6, Nexus 7, Nexus 9, Nexus 5X, Nexus 6P, and Nexus Player running Android 6.0 to support the July Android security release.

Network Connectivity Tests

The Android Connectivity Testing Suite validates the functionality of various aspects of the Bluetooth, Wi-Fi and cellular radios. The suite includes the Scripting Layer For Android, the Scripting Layer For Native and the Android Comms Test Suite.

Crash Dump and Tomstone Details for debuggerd

Debugging Native Android Platform Code now contains detailed breakdowns of crash dumps and tombstones to help parse the output of debuggerd.

Binaries Highlighted, Building the System Renamed

To ease use, the former Building the System page has been renamed Preparing to Build with links to proprietary binaries (blobs) added to Preparing to Build and the central Requirements list.

Feedback Fixes DRM Path, Keystore API, Jack Argument

As a result of your feedback: the path to DRM source code has been updated (from /frameworks/base/drm/ to /frameworks/av/drm/), Keystore documentation now links to the more relevant GenSpec API, and an error in the Jack export ANDROID_JACK_EXTRA_ARGS command has been fixed. Please keep the feedback coming!

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 Site Feedback button at the bottom of any page to request improvements to the content or identify errors. In addition, is maintained in the Android Open Source Project. See the docs/ project log in AOSP for the complete list of changes to this site. Contribute your own updates to that same project and help maintain