随机声音onclick按钮android资产

Question

我想在我的项目中播放 assets/ 文件夹中的随机声音。 那个代码有什么问题？请帮帮我

这是我的代码：

MediaPlayer player;
AssetFileDescriptor descriptor;
private String[] filelist;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.activity_main);
    player = new MediaPlayer();

    Button bTutorial1 = (Button) findViewById(R.id.tutorial1);
    AssetManager aMan = this.getAssets();
    try {
        filelist = aMan.list("mysounds/");

        // OR
        // filelist = aMan.list("/");
    } catch (IOException e1) {
        e1.printStackTrace();
        {
        }
        bTutorial1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Random randomGenerator = new Random();
                int randomInt = randomGenerator.nextInt(filelist.length);

                try {
                    String mediaFile = filelist[randomInt];
                    descriptor = getAssets().openFd(mediaFile);
                    player.setDataSource(descriptor.getFileDescriptor(),
                            descriptor.getStartOffset(),
                            descriptor.getLength());
                    descriptor.close();
                    player.prepare();
                    player.start();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

}

点击按钮后没有声音播放。帮我！ 没有错误显示。

Answer 1

试试这个 Mediaplayer 构造函数：

MediaPlayer player = MediaPlayer.create(Context context, Uri uri);
uri = Uri.parse("file:///android_asset/mysounds/music.mp3");