Android 使用MediaPlayer播放assets目录的音频文件

  private AssetManager assetManager;    private MediaPlayer playRing() {        MediaPlayer player = null;        try {            player = new MediaPlayer();            assetManager = getAssets();            AssetFileDescriptor fileDescriptor = assetManager.openFd("一万次悲伤.mp3");            player.setDataSource(fileDescriptor.getFileDescriptor(),fileDescriptor.getStartOffset(),             fileDescriptor.getStartOffset());            player.prepare();            player.start();        } catch (IOException e) {            e.printStackTrace();        }        return player;    }