Android 4.0自动接听电话

Intent meidaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);  
	                KeyEvent keyEvent = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK);  
	                meidaButtonIntent.putExtra(Intent.EXTRA_KEY_EVENT,keyEvent);  
	                sendOrderedBroadcast(meidaButtonIntent, null);