Android - How to determine if external speaker is connected

Question

I want to play sound in an app only if it is NOT played through the phone's built in speaker. To do this, I assume I need to find out if there is an external speaker connected (wired speaker, bluetooth headset, wired headset, etc).

I see that AudioManager.isWiredHeadsetOn() is deprecated but still works, however this only shows that a wired headset is plugged in. Is there a similar option for bluetooth? Will that cover all the possible audio options?

Conversely, if there is a way to tell that sound WILL be routed through the built in speaker, that would probably work just as well.

Aashish Aashish · Accepted Answer · 2017-09-10T10:55:53

public static boolean isWiredHeadsetConnected() {    
        AudioManager mAudioMgr = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
        if(mAudioMgr.isWiredHeadsetOn()){

                 mAudioMgr.setWiredHeadsetOn(false);
                 mAudioMgr.setSpeakerphoneOn(true);
                 mAudioMgr.setMode(AudioManager.MODE_IN_COMMUNICATION);

                 Toast.makeText(getApplicationContext(), "SpeakerPhone On", Toast.LENGTH_LONG).show();
          }
}

There's an intent to detect whether or not one is being plugged or unplugged: ACTION_HEADSET_PLUG. So, you must add it.

public static boolean isBluetoothHeadsetConnected() {
    BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
    return mBluetoothAdapter != null && mBluetoothAdapter.isEnabled()
            && mBluetoothAdapter.getProfileConnectionState(BluetoothHeadset.HEADSET) == BluetoothHeadset.STATE_CONNECTED;
}

Bluetooth permission:

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

Android - How to determine if external speaker is connected

2 Answers