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();
}