Routing call audio through the bluetooth headset

Hello there,

I would like to allow users to switch between different audio output sources (handset, speaker, Bluetooth). I can get this done for handset and speaker by calling audioManager.setSpeakerphoneOn but how to do I handle the case where users want the audio to go through their Bluetooth headsets?

[kbagchiGWC]

@marklapasa

The SDK doesn’t provide bluetooth enabling API as part of the Voice Android SDK. However, this can be implemented in the application layer. In our test application we have adopted the AppRTC code provided by google.

https://webrtc.googlesource.com/src/+/master/examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java https://webrtc.googlesource.com/src/+/master/examples/androidapp/src/org/appspot/apprtc/AppRTCBluetoothManager.java

When a call starts you can add the following code to initialize AppRTCAudioManager and AppRTCBluetoothManager.

AppRTCAudioManager audioManager = AppRTCAudioManager.create(getApplicationContext());
audioManager.start(new AudioManagerEvents() {
    @Override
    public void onAudioDeviceChanged(AppRTCAudioManager.AudioDevice audioDevice, Set<AppRTCAudioManager.AudioDevice> availableAudioDevices) {
        onAudioManagerDevicesChanged(audioDevice, availableAudioDevices);
    }
});

Here is the link to the code snippet in AppRTC, https://webrtc.googlesource.com/src/+/master/examples/androidapp/src/org/appspot/apprtc/CallActivity.java#583 to https://webrtc.googlesource.com/src/+/master/examples/androidapp/src/org/appspot/apprtc/CallActivity.java#595

In the manifest file, make sure to add the following permissions :

<uses-permission android:name="android.permission.BLUETOOTH" />

Try this out and let me know if this does not solve the issue.

[Salim1993]

@idelgado Has Bluetooth been fixed yet for android. I’ve tried a solution above and it works, except that it except for the following scenario. If you are listening to spotify using a bluetooth device, the twilio voice will take play through bluetooth device. However the call is done, it will not give back bluetooth audio to spotify, and is stuck on call.

I’ve tried a few things to fix this issue, however I have been unable to solve this.

I can’t continue debugging a this as this taking up my time from other things, and was hoping that twilio may have already fixed the solution, since it has been a while since this ticket is created. Let me know the status of this issue on your guys end.

Please and Thank you