hello world (android mediaplayer)

try{
    String url = "http://7xkvbq.com1.z0.glb.clouddn.com/m4a/50.m4a"; // your URL here
    MediaPlayer mediaPlayer = new MediaPlayer();
    mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mediaPlayer.setDataSource(url);
    mediaPlayer.prepare();
    mediaPlayer.start();
}catch (Exception ex){
    ex.printStackTrace();
}