detecting bluetooth headset call button press in android -

i developing calling app. need pick/hangup call bluetooth device . can not key press event bluetooth headset. have tried broadcast , audio manager getting play/pause, pre , next button callbacks .

public class mediabuttonintentreceiver extends broadcastreceiver {     @override     public void onreceive(context context, intent intent) {         if (intent.action_media_button.equals(intent.getaction())) {             keyevent event = (keyevent) intent .getparcelableextra(intent.extra_key_event);              if (event == null) {                 return;             }              if (event.getaction() == keyevent.action_down) {                 //context.sendbroadcast(new intent(intents.action_player_pause));             }         }     } } 

menifest is

<receiver android:name=".net.mediabuttonintentreceiver"> <intent-filter> <action android:name="android.intent.action.media_button" /> </intent-filter> </receiver> 

i need event when activity alive have use onkeydown , dispatchkeyevent methods of activity nothing seems work. giving me same result , previous. there must way cause system phone app getting event starting dialer. pls suggest me useful way .

i think need listen keyevent.keycode_call , keyevent.keycode_endcall

a complete list of keyevents can found here: https://developer.android.com/reference/android/view/keyevent.html

keep in mind call handling headsets (wired or not) use play/pause button ending call.

edit:

try in dispatchkeyevent:

@override public boolean dispatchkeyevent(keyevent event) {     if (event.getkeycode() == keyevent.keycode_call) {         toast.maketext(this, "calling!", toast.length_long).show();         return true;     }     return super.dispatchkeyevent(event); } 

keep in mind should use event.getkeycode(); instead of event.getaction(); when dealing static keycode_{somekey} integers.