Question

我有一个应用程序，通过单击按钮从我的原始文件夹中播放随机声音。它工作正常，但我尝试将按钮上的文本设置为下一个文件名失败。我远吗？另外，我如何按顺序播放文件而不是随机播放？谢谢，请温柔。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Button sound = (Button) findViewById(R.id.button1);
    sound.setOnClickListener(new View.OnClickListener() {

        final int[] btns = new int[]{R.raw.sound1, R.raw.sound2, R.raw.sound3, R.raw.sound4, R.raw.sound5, R.raw.sound6, R.raw.sound7, R.raw.sound8, R.raw.sound9, R.raw.sound10, R.raw.sound11, R.raw.sound12, R.raw.sound13, R.raw.sound14, R.raw.sound15, R.raw.sound16, R.raw.sound17, R.raw.sound18, R.raw.sound19, R.raw.sound20, R.raw.sound21, R.raw.sound22, R.raw.sound23, R.raw.sound24, R.raw.sound25, R.raw.sound26, R.raw.sound27, R.raw.sound28, R.raw.sound29, R.raw.sound30, R.raw.sound31, R.raw.sound32, R.raw.sound33, R.raw.sound34, R.raw.sound35, R.raw.sound36, R.raw.sound37, R.raw.sound38, R.raw.sound39, R.raw.sound40, R.raw.sound41, R.raw.sound42, R.raw.sound43, R.raw.sound44, R.raw.sound45, R.raw.sound46, R.raw.sound47, R.raw.sound48, R.raw.sound49, R.raw.sound50 };

        private Random rnd = new Random();

        @Override
        public void onClick(View v) {
            ((Button) v).setText(rnd);
            int sndToPlay = rnd.nextInt(btns.length);
            final MediaPlayer mp = MediaPlayer.createMainActivity.this, btns[sndToPlay]);
            mp.start();
        }
    );
}

Answer 1

你的一些代码有点偏，但这是更新的功能。您试图传入随机对象而不是传入声音文件名。

@Override
public void onClick(View v) {
  int sndToPlay = rnd.nextInt(btns.length);
  ((Button) v).setText(sndToPlay);
  final MediaPlayer mp = MediaPlayer.createMainActivity(btns[sndToPlay]);
  mp.start();
}

将文本设置为声音文件的名称

1 个答案: