android耳机中间按键（中键）监听

本文主要实现监听耳机的中间按键，搞了很久，才明白，要动态注册与静态注册结合才可以实现耳机中键的监听。

代码如下。

耳机中键监听广播接收类：

public class MediaButtonIntentReceiver extends BroadcastReceiver {

	 @Override
	 public void onReceive(final Context context, Intent intent) {
	   KeyEvent event = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
	   if (event == null) {
	    return;
	   }
	   int keycode = event.getKeyCode();
	   if(keycode==79){//耳机中键
	   Log.v("ss","接收到按键");
		   
	   }
	   
	 }
}

主页面动态注册。

public class ListenActivity extends Activity {
	 private AudioManager mAudioManager;
	 private ComponentName rec;

	 @Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.fragment_main);
		
		mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
	    rec = new ComponentName(getPackageName(), MediaButtonIntentReceiver.class.getName());
	    mAudioManager.registerMediaButtonEventReceiver(rec);
	    
	   
	} 

		@Override
	 public void onDestroy() {
		  super.onDestroy();
		  mAudioManager.unregisterMediaButtonEventReceiver(rec);
		 
	 }
		
		
}

静态注册：