在手機上播放音樂的時候,我們希望監聽電話的狀態,當然在MID上沒有電話功能,不需要監聽。
如下代碼是監聽電話的狀態,代碼簡單不做介紹直接看代碼:
private boolean mResumeAfterCall = false;<br />private PhoneStateListener mPhoneStateListener = new PhoneStateListener() {<br />@Override<br />public void onCallStateChanged(int state, String incomingNumber) {<br />if (state == TelephonyManager.CALL_STATE_RINGING) {<br />AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);<br />int ringvolume = audioManager<br />.getStreamVolume(AudioManager.STREAM_RING);<br />if (ringvolume > 0) {<br />mResumeAfterCall = (player.isPlaying() || mResumeAfterCall);<br />try {<br />stub.pause();<br />} catch (RemoteException e) {<br />// TODO Auto-generated catch block<br />e.printStackTrace();<br />}<br />}<br />} else if (state == TelephonyManager.CALL_STATE_OFFHOOK) {<br />// pause the music while a conversation is in progress<br />mResumeAfterCall = (player.isPlaying() || mResumeAfterCall);<br />try {<br />stub.pause();<br />} catch (RemoteException e) {<br />// TODO Auto-generated catch block<br />e.printStackTrace();<br />}<br />} else if (state == TelephonyManager.CALL_STATE_IDLE) {<br />// start playing again<br />if (mResumeAfterCall) {<br />// resume playback only if music was playing<br />// when the call was answered<br />try {<br />stub.resume();<br />} catch (RemoteException e) {<br />// TODO Auto-generated catch block<br />e.printStackTrace();<br />}<br />mResumeAfterCall = false;<br />}<br />}<br />}<br />};
使用的時候呢,就在service 的oncreate 裡面添加,如下:
public void onCreate() {<br />player = new MediaPlayer();<br />super.onCreate();<br />TelephonyManager tmgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);<br />tmgr.listen(mPhoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);<br />IntentFilter filter = new IntentFilter();</p><p>filter.addAction(SERVICECMD);<br />filter.addAction(PAUSE_ACTION);<br />receiver = new MusicServiceReceiver();<br />registerReceiver(receiver, filter);<br />}
在ondestroy 裡面刪除就可以了
public void onDestroy() {<br />// Log.e(TAG, "onDestroy" +player.isPlaying() );<br />// System.out.println("onDestroy");<br />unregisterReceiver(receiver);<br />player.release();<br />player = null;</p><p>TelephonyManager tmgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);<br />tmgr.listen(mPhoneStateListener, 0);<br />super.onDestroy();<br />}<br />