一、创建对象

player = new MediaPlayer();
//也可以使用create的方式，如：
MediaPlayer mp = MediaPlayer.create(this, R.raw.test);//这时就不用调用setDataSource了,同时create 内部已经调用了prepara()方法，也不用再调用prepara()

二、播放Assets目录里的音频

player.setDataSource(getAssets().openFd("9.mp3").getFileDescriptor());
player.prepare();
player.start(); 

三、播放SD卡音频

player.setDataSource(“/sdcard/a.mp3”);
player.prepara();
player.start();

四、播放远程音频

player = new MediaPlayer();
player.setDataSource("http://192.168.1.2/test/9.mp3");
player.prepare();
player.start(); 

五、异步播放

player = MediaPlayer()
player.setDataSource(url)
player.setOnPreparedListener {
     player.start()
 }
 player.prepareAsync()