Android Kotlin SDK for LiveKit

Official Android Client SDK for LiveKit. Easily add video & audio capabilities to your Android apps.

Docs

Docs and guides at https://docs.livekit.io

Installation

LiveKit for Android is available as a Maven package.

...
dependencies {
  implementation "io.livekit:livekit-android:<version>"
}

Usage

LiveKit uses WebRTC-provided org.webrtc.SurfaceViewRenderer to render video tracks. Subscribed audio tracks are automatically played.

class MainActivity : AppCompatActivity(), RoomListener {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        ...
        val url = "wss://your_host";
        val token = "your_token"

        launch {
            val room = LiveKit.connect(
                applicationContext,
                url,
                token,
                ConnectOptions(),
                this
            )
            val localParticipant = room.localParticipant
            localParticipant.setMicrophoneEnabled(true)
            localParticipant.setCameraEnabled(true)

            attachVideo(videoTrack)
        }
    }

    override fun onTrackSubscribed(
        track: Track,
        publication: RemoteTrackPublication,
        participant: RemoteParticipant,
        room: Room
    ) {
        if (track is VideoTrack) {
            attachVideo(track)
        }
    }

    private fun attachVideo(videoTrack: VideoTrack) {
        // viewBinding.renderer is a `org.webrtc.SurfaceViewRenderer` in your
        // layout
        videoTrack.addRenderer(viewBinding.renderer)
    }
}

Permissions

LiveKit relies on the RECORD_AUDIO and CAMERA permissions to use the microphone and camera. These permission must be requested at runtime. Reference the sample app for an example.

Dev Environment

To develop the Android SDK itself, you'll need:

• Ensure the protocol submodule repo is initialized and updated with git submodule update --init
• Install Android Studio Arctic Fox 2020.3.1+

Optional (Dev convenience)

1. Download webrtc sources from https://webrtc.googlesource.com/src
2. Add sources to Android Studio by pointing at the webrtc/sdk/android folder.