how to turn speaker on/off programmatically in android 4.0

Question

I play a file through media player and I want to give options like speaker on/off, play though headset, bluetooth ,etc. I tried the below code which works well for android 2.2 but I want something that can also work for 2.2 and 4.0 both. Can you help me to programmatically turn the speaker on/off and playing via headphones?

AudioManager audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);     if(isOn){         audioManager.setMode(AudioManager.MODE_IN_CALL);             audioManager.setMode(AudioManager.MODE_NORMAL);      }else{         //Seems that this back and forth somehow resets the audio channel         audioManager.setMode(AudioManager.MODE_NORMAL);              audioManager.setMode(AudioManager.MODE_IN_CALL);             }     audioManager.setSpeakerphoneOn(isOn); 

P.S: I have given this permission in manifest:

android.permission.MODIFY_AUDIO_SETTINGS  

Answer 1

Something like this might work on some devices (I've only tested in on an XPeria P):

final static int FOR_MEDIA = 1; final static int FORCE_NONE = 0; final static int FORCE_SPEAKER = 1;  Class audioSystemClass = Class.forName("android.media.AudioSystem"); Method setForceUse = audioSystemClass.getMethod("setForceUse", int.class, int.class); setForceUse.invoke(null, FOR_MEDIA, FORCE_SPEAKER); // To get back to the default behaviour, use the combination FOR_MEDIA,FORCE_NONE. 

The combination FOR_MEDIA, FORCE_SPEAKER is typically only used internally to route the FM-radio audio to the loudspeaker (since the FM-radio requires you to have a wired headset / headphone plugged in to act as an antenna). Devices that don't have FM-radio functionality (or uses an alternative implementation) might ignore this combination of parameters, so this method would not work on such a device.

Answer 2

AudioManager mAudioMgr = (AudioManager)getSystemService(Context.AUDIO_SERVICE);   Button mVolumeButton = (Button)findViewById(R.id.btn_Volume);         mVolumeButton.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 if(mAudioMgr.isWiredHeadsetOn()){                     mAudioMgr = (AudioManager)getSystemService(Context.AUDIO_SERVICE);                     mAudioMgr.setWiredHeadsetOn(false);                     mAudioMgr.setSpeakerphoneOn(true);                     mAudioMgr.setMode(AudioManager.MODE_IN_COMMUNICATION);                      Toast.makeText(getApplicationContext(), "SpeakerPhone On", Toast.LENGTH_LONG).show();                 }else{                     mAudioMgr.setMode(AudioManager.MODE_IN_COMMUNICATION);                     mAudioMgr.setSpeakerphoneOn(false);                     mAudioMgr.setWiredHeadsetOn(true);                     Toast.makeText(getApplicationContext(), "Wired Headset On", Toast.LENGTH_LONG).show();                 }             }         });