Question

“ goClicked”函数是按钮“ Go”的onClick函数，但是当我单击按钮“ Go”时它不会执行（我之所以这样说是因为吐司没有出现），直到我评论了循环进入“ goClicked”功能。我只粘贴了两个函数“ goClicked”和“ countdown”的代码，因为它们是更改变量“ counterRunning”的唯一函数。

    public void goClicked(View view) {
    afterGoPressed();
    countDown();
    correctCount = 0;
    totalCount = 0;
    TextView time = (TextView) findViewById(R.id.time);
    while (counterRunning) {
        int sum = generateQuestion();
        pickOption = generateOptions(sum);

    }

}
 public void countDown() {
            counterRunning = true;
            final TextView time = (TextView) findViewById(R.id.time);
            final Button tryAgain = (Button) findViewById(R.id.tryAgain);
            final TextView result = (TextView) findViewById(R.id.result);
            final TextView score = (TextView) findViewById(R.id.score);
            int secondsLeft = 30;

            time.setText(secondsLeft+"");
            CountDownTimer countDownTimer = new CountDownTimer(30000,1000) {
                @Override
                public void onTick(long millisUntilFinished) {
                    time.setText(millisUntilFinished/1000 + "");
                }

                @Override
                public void onFinish() {
                    tryAgain.setVisibility(View.VISIBLE);
                    result.setText("Your score: " + score.getText());
                    result.setVisibility(View.VISIBLE);
                    counterRunning = false;
                }
            }.start();
}

Answer 1

这是因为您正在使用以下代码进行无限循环：

while (counterRunning) {
    int sum = generateQuestion();
    pickOption = generateOptions(sum);

}

该代码将阻塞所有其他指令，直到发现counterRunning在while块内被更改为false为止。但这从未发生。因此是无限循环。

用户定义的goClicked函数未执行。建议我一个解决方案

1 个答案: