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Getting the Code

Android development is only supported on Linux.

  1. Install prerequisite software

  2. Set the target OS in your environment:

    export GYP_DEFINES="OS=android"
  3. Create a working directory, enter it, and run:

    fetch --nohooks webrtc_android
    gclient sync

This will fetch a regular WebRTC checkout with the Android-specific parts added. The same checkout can be used for both Linux and Android development, depending on the OS you set in GYP_DEFINES (see above).

See Development for instructions on how to update the code, building etc.


NOTICE: We’re in the middle of migrating from GYP to GN for generating project files, so right now both GYP_DEFINES needs to be set and a GN command line needs to be invoked to generate the project files.

  1. Generate projects using GN.

    Make sure your current working directory is src/ of your workspace. Then run:

    gn gen out/Default --args='target_os="android" target_cpu="arm"'

    You can specify a directory of your own choice instead of out/Default, to enable managing multiple configurations in parallel.

    • To build for ARM64: use target_cpu="arm64"
    • To build for 32-bit x86: use target_cpu="x86"
    • To build for 64-bit x64: use target_cpu="x64"
  2. Compile using:

    ninja -C out/Default

Using the Bundled Android SDK/NDK

In order to use the Android SDK and NDK that is bundled in third_party/android_tools, run this to get it included in your PATH (from src/):

. build/android/

Then you’ll have adb and all the other Android tools in your PATH.

Running the AppRTCMobile App

AppRTCMobile is an Android application using WebRTC Native APIs via JNI (JNI wrapper is documented here).

For instructions on how to build and run, see webrtc/examples/androidapp/README.

Running WebRTC Native Tests on an Android Device

To build APKs with the WebRTC native tests, follow these instructions.

  1. Ensure you have an Android device set in Developer mode connected via USB.

  2. Compile as described in the section above.

  3. To see which tests are available: look in out/Default/bin.

  4. Run a test on your device:

  5. If you want to limit to a subset of tests, use the --gtest_filter flag, e.g.

    out/Debug/bin/run_modules_unittests \
  6. NOTICE: The first time you run a test, you must accept a dialog on the device!

If want to run Release builds instead; build out/Release and use the scripts generated in out/Release/bin.

Running WebRTC Instrumentation Tests on an Android Device

The instrumentation tests (like AppRTCMobileTest and libjingle_peerconnection_android_unittest) gets scripts generated in the same location as the native tests described in the previous section.