小编Krz*_*cki的帖子

我有一个应用程序,通过MediaPlayer播放无线电作为服务.是否可以在Service类中使用MediaController？问题是我可以使用findViewById.

我试着让我的LinearLayout进入onPrepeared方法......

public class RadioPlayer extends Service implements OnPreparedListener, MediaController.MediaPlayerControl {
  @Override
  public void onCreate() {
  super.onCreate();
  mediaPlayer = new MediaPlayer();
  mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
  mediaPlayer.setOnPreparedListener(this);
  mediaController = new MediaController(this, false); mediaPlayer.setDataSource(url);
  mediaPlayer.prepareAsync(); 
}

@Override
  public void onPrepared(MediaPlayer mediaPlayer) {
  mediaPlayer.start();
  mediaController.setMediaPlayer(this);
  LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
  View layout = inflater.inflate(R.layout.main, (ViewGroup) findViewById(R.id.main_program_view));
  mediaController.setAnchorView(layout);
}
}

main.xml文件

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/main_program_view"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="#FFFFFF"
        android:orientation="vertical" >  

        <TextView
            android:id="@+id/now_playing_text"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:gravity="center"
            android:text="@string/na_antenie"
            android:textColor="#333333" />    
</LinearLayout>

在某些情况下,我不想听我手机的状态.如何销毁PhoneStateListener类的对象？

我这样创建对象

 try {
     phoneCallListener = new WnetPlayerPhoneCallListener();
     TelephonyManager mTM = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
     mTM.listen(phoneCallListener, PhoneStateListener.LISTEN_CALL_STATE);
 } catch(Exception e) {
     Log.e("PhoneCallListener", "Exception: "+e.toString()); 
 }