播放音乐另一种方式

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    MediaPlayer player = MediaPlayer.create(this, Uri.parse("http://www.urlto.com/file.mp3")); 
    player.setOnPreparedListener(new OnPreparedListener() {  
        @Override 
        public void onPrepared(MediaPlayer mp) { 
            mp.start(); 
        } 
    }); 
} 用这种方式是因为我用MediaPlayer mp = new MediaPlayer(); 
try { .setDataSource("http://www.urltofile.com/file.mp3"); 
        mp.prepare(); 
        mp.start(); 
    } catch (IllegalArgumentException e) { 
        e.printStackTrace(); 
    } catch (IllegalStateException e) { 
        e.printStackTrace(); 
    } catch (IOException e) { 
        e.printStackTrace(); 
    }          mp
竟然有错  所有就换用了上面的方式