代码如下：
private MediaPlayer mMediaPlayer;
mMediaPlayer = new MediaPlayer();
mMediaPlayer = MediaPlayer.create(this, R.raw.happy);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.setLooping(true);
mMediaPlayer.start();
ok，问题解决~
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原文：http://blog.csdn.net/nijian81/article/details/46910189