Continuos Android Speech Recognition with Bluetooth Connections

Question

I'm implementing an Offline Continuos Speech Recognition Android Application with Google Speech Recognition to manage an Arduino device connected to the smartphpone via Bluetooth. When I use Bluetooth Headset, I want to use the Bluetooth Microphone instead of the phone microphone. I specified the following code:

private BluetoothProfile.ServiceListener mProfileListener = new BluetoothProfile.ServiceListener() {
    public void onServiceConnected(int profile, BluetoothProfile proxy) {
        if (profile == BluetoothProfile.HEADSET) {
            mBluetoothHeadset = (BluetoothHeadset) proxy;
        }
    }
    @Override
    public void onServiceDisconnected(int profile) {
        if (profile == BluetoothProfile.HEADSET) {
            mBluetoothHeadset = null;
        }
    }
};

and the BluetoothHeadsetReceiver:

public class BluetoothHeadsetReceiver extends BroadcastReceiver {

    public BluetoothHeadsetReceiver(Context context) {
        IntentFilter intentFilter = new IntentFilter(BluetoothHeadset.ACTION_AUDIO_STATE_CHANGED);        intentFilter.addAction(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);         intentFilter.addAction(BluetoothHeadset.ACTION_VENDOR_SPECIFIC_HEADSET_EVENT);
        context.registerReceiver(this, intentFilter);
        mBluetoothHeadsetReceiver = true;
    }
    public void onReceive(Context context, Intent intent) {
        int state = intent.getIntExtra(BluetoothHeadset.EXTRA_STATE, BluetoothHeadset.STATE_AUDIO_DISCONNECTED);
        if (state == BluetoothHeadset.STATE_AUDIO_CONNECTED) {
            deviceBTName = mBluetoothHeadset.getConnectedDevices().get(0).getName();
            deviceBT = mBluetoothHeadset.getConnectedDevices().get(0);
            audioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
            audioManager.startBluetoothSco();
            audioManager.setBluetoothScoOn(true);
            audioManager.setMicrophoneMute(true);
          }
        }
        else if (state == BluetoothHeadset.STATE_AUDIO_DISCONNECTED)
        {
            audioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
            audioManager.startBluetoothSco();
            audioManager.setBluetoothScoOn(true);
            mBluetoothConnected = false;
        }
    }
}

but the application always use the Phone Microphone.

How can I route the voice input via Bluettoth Microphone? Thanks

Answer 1

Solved using: audioManager.setSpeakerphoneOn(false);