public class RemoteControlClientReceiver extends BroadcastReceiver
{
    @SuppressWarnings("unused")
    private static final String TAG = "mythou_ACTION_MEDIA_BUTTON";

    /*
     * It should be safe to use static variables here once registered via the
     * AudioManager
     */
    private
 
 static long mHeadsetDownTime = 0;
    private static long mHeadsetUpTime = 0;

    @Override
    public void onReceive(Context context, Intent intent)
    {
　　　　 //獲取對應Acton，判斷是否是需要的ACTION_MEDIA_BUTTON
        String action = intent.getAction();if (action.equalsIgnoreCase(Intent.ACTION_MEDIA_BUTTON))
        {
            KeyEvent 
 
event = (KeyEvent) intent
                    .getParcelableExtra(Intent.EXTRA_KEY_EVENT);
            if (event == null)
                return;

            if (event.getKeyCode() != KeyEvent.KEYCODE_HEADSETHOOK
                    && event.getKeyCode() != KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE
                    
 
&& event.getAction() != KeyEvent.ACTION_DOWN)
                return;

            Intent i = null;
            switch (event.getKeyCode())
            {
            /*
             * one click => play/pause long click => previous double click =>
             * next
             */
　　　　　　　　//這裡根據按下的時間和操作，分離出具體的控制
            case KeyEvent.KEYCODE_HEADSETHOOK:
            case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
                long time = SystemClock.uptimeMillis();
                switch (event.getAction())
                {
                case KeyEvent.ACTION_DOWN:
                    if (event.getRepeatCount() > 0)
                        break;
                    mHeadsetDownTime = time;
                    break;
                case KeyEvent.ACTION_UP:
                    // long click
                    if (time - mHeadsetDownTime >= 1000)
                    {
                        i = new Intent(AudioService.ACTION_REMOTE_BACKWARD);
                        time = 0;
                        // double click
                    } else if (time - mHeadsetUpTime <= 500)
                    {
                        i = new Intent(AudioService.ACTION_REMOTE_FORWARD);
                    }
                    // one click
                    else
                    {
                        if (mLibVLC.isPlaying())
                            i = new Intent(AudioService.ACTION_REMOTE_PAUSE);
                        else
                            i = new Intent(AudioService.ACTION_REMOTE_PLAY);
                    }
                    mHeadsetUpTime = time;
                    break;
                }
                break;
　　　　　　　//下面是常規的播放、暫停、停止、上下曲　
            case KeyEvent.KEYCODE_MEDIA_PLAY:
                i = new Intent(AudioService.ACTION_REMOTE_PLAY);
                break;
            case KeyEvent.KEYCODE_MEDIA_PAUSE:
                i = new Intent(AudioService.ACTION_REMOTE_PAUSE);
                break;
            case KeyEvent.KEYCODE_MEDIA_STOP:
                i = new Intent(AudioService.ACTION_REMOTE_STOP);
                break;
            case KeyEvent.KEYCODE_MEDIA_NEXT:
                i = new Intent(AudioService.ACTION_REMOTE_FORWARD);
                break;
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
                i = new Intent(AudioService.ACTION_REMOTE_BACKWARD);
                break;
            }

            if (isOrderedBroadcast())
                abortBroadcast();
            if (i != null)
                context.sendBroadcast(i);
        }
    }
}