android音乐播放器监听电话状态

在手机上播放音乐的时候，我们希望监听电话的状态，当然在MID上没有电话功能，不需要监听。

 

如下代码是监听电话的状态，代码简单不做介绍直接看代码：

 private boolean mResumeAfterCall = false;
 private PhoneStateListener mPhoneStateListener = new PhoneStateListener() {
     @Override
     public void onCallStateChanged(int state, String incomingNumber) {
         if (state == TelephonyManager.CALL_STATE_RINGING) {
             AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
             int ringvolume = audioManager
                     .getStreamVolume(AudioManager.STREAM_RING);
             if (ringvolume > 0) {
                 mResumeAfterCall = (player.isPlaying() || mResumeAfterCall);
                 try {
                     stub.pause();
                 } catch (RemoteException e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();
                 }
             }
         } else if (state == TelephonyManager.CALL_STATE_OFFHOOK) {
             // pause the music while a conversation is in progress
             mResumeAfterCall = (player.isPlaying() || mResumeAfterCall);
             try {
                 stub.pause();
             } catch (RemoteException e) {
                 // TODO Auto-generated catch block
                 e.printStackTrace();
             }
         } else if (state == TelephonyManager.CALL_STATE_IDLE) {
             // start playing again
             if (mResumeAfterCall) {
                 // resume playback only if music was playing
                 // when the call was answered
                 try {
                     stub.resume();
                 } catch (RemoteException e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();
                 }
                 mResumeAfterCall = false;
             }
         }
     }
 };

 

 

使用的时候呢，就在service 的oncreate 里面添加，如下：

 public void onCreate() {
     player = new MediaPlayer();
     super.onCreate();
     TelephonyManager tmgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
     tmgr.listen(mPhoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
     IntentFilter filter = new IntentFilter();

     filter.addAction(SERVICECMD);
     filter.addAction(PAUSE_ACTION);
     receiver = new MusicServiceReceiver();
     registerReceiver(receiver, filter);
 }

 

 

在ondestroy 里面删除就可以了

 public void onDestroy() {
     // Log.e(TAG, "onDestroy" +player.isPlaying() );
     // System.out.println("onDestroy");
     unregisterReceiver(receiver);
     player.release();
     player = null;

     TelephonyManager tmgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
     tmgr.listen(mPhoneStateListener, 0);
     super.onDestroy();
 }