在第二个开始之前声音没有完全播放

Question

我正在开发一个用于研究目的的应用程序。该应用程序需要两个500毫秒的声音一个接一个地播放，它们之间的间隔为500毫秒。问题是第一个声音没有完全播放完毕。它会在最后被削减。

public void playSounds(int num, int i) {

    if (num == 1) {

        try {
            TimeUnit.MILLISECONDS.sleep(500);
            mp.reset();

        } catch (Exception ex) {

        }
        mp = MediaPlayer.create(getApplicationContext(), sounds[i]);
        //i--;
        mp.start();
        //onPrepared(mp);

        try {
            TimeUnit.MILLISECONDS.sleep(500);
            mp.reset();

        } catch (Exception ex) {

        }

        mp = MediaPlayer.create(getApplicationContext(), sounds[0]);
        mp.start();
        //onPrepared(mp);
        Log.d("Mytag", "RevCount is " + revCount);


    } else if (num == 2) {
        try {
            TimeUnit.MILLISECONDS.sleep(500);
            mp.reset();

        } catch (Exception ex) {

        }

        mp = MediaPlayer.create(getApplicationContext(), sounds[0]);
        mp.start();
        //onPrepared(mp);

        Log.d("Mytag", "RevCount is " + revCount);
        try {

            TimeUnit.MILLISECONDS.sleep(500);
            mp.reset();
            //Thread.sleep((long) 500.00);

        } catch (Exception ex) {

        }

        mp = MediaPlayer.create(getApplicationContext(), sounds[i]);
        //i--;
        mp.start();
        //onPrepared(mp);


    }
}

我已经初始化了mediaPlayer对象。我似乎无法在这里找到错误。