求助，新学 android，有个问题，望解答，谢谢

如何实现点击返回键，退出一个 while 循环。

public void clickPlay(){
    SoundPool mSoundPool =  new SoundPool(1, AudioManager.STREAM_SYSTEM, 5);
    mSoundPool.load(this,R.raw.shuidi,1);

    int count = 0;
    while (!result) {
        keyevent_bool = keyCode != 0;
        if (keyevent_bool) {
            
            break;
        }
        try {

            mSoundPool.play(1, (float) 0.01, (float) 0.01, 0, 0, 1);
            Thread.sleep(1 * 1000); //设置暂停的时间 1 秒
            mSoundPool.stop(1);
            count++;
        } catch (InterruptedException e) {
            e.printStackTrace();
        }


    }
    mSoundPool.release();
}

@Override
public void onBackPressed() {
    super.onBackPressed();
    keyCode = KeyEvent.KEYCODE_BACK;
}