Question

我想在Android中创建一个从<1秒开始的慢秒表。除了一件事，一切都很好。我希望它慢意思是：

1.000/s //Start Time
1.001/s //After 10ms
1.002/s //After another 10ms

它不是真正的秒表，但它就像它。我需要为我正在创造的游戏增加每10毫秒的时间。请在模拟器或真实设备上测试代码以便更好地理解。

代码：

private void startTime() {

    final long startTime = SystemClock.uptimeMillis();

    timeHandler = new Handler(); //Handler
    timeRunnable = new Runnable() { //Runnable
        @Override
        public void run() {
            long timeInMilliseconds = SystemClock.uptimeMillis() - startTime + 1000; //Start time is 1.000/s
            int secs = (int) (timeInMilliseconds / 1000);
            int mins = secs / 60;
            secs = secs % 60;
            int milliseconds = (int) (timeInMilliseconds % 1000);
            if (timeInMilliseconds > 60000) {
                score.setText(mins + ":" + String.format("%02d", secs) + "." + String.format("%03d", milliseconds) + "/s");
            } else {
                score.setText(String.format("%01d", secs) + "." + String.format("%03d", milliseconds) + "/s");
            }
            timeHandler.postDelayed(this, 0);
        }
    };

    timeHandler.postDelayed(timeRunnable, 0);
}

请注意，得分只是一个显示时间的普通TextView。请帮我。感谢。

Answer 1

经过多次试验和错误后，我找到了一个非常简单的解决方案，我将在此发布，以防将来有人面临像我一样的问题。

private void startTime() {

    final long startTime = SystemClock.uptimeMillis();

    timeHandler = new Handler();
    timeRunnable = new Runnable() {
        @Override
        public void run() {

            //Note the difference in the first two lines here.
            long timeInMilliseconds = SystemClock.uptimeMillis() - startTime;
            //You can change this 20 according to what you want.
            timeInMilliseconds = (timeInMilliseconds / 20) + 1000;

            int secs = (int) (timeInMilliseconds / 1000);
            int mins = secs / 60;
            secs = secs % 60;
            int milliseconds = (int) (timeInMilliseconds % 1000);
            if (timeInMilliseconds > 60000) {
                score.setText(mins + ":" + String.format("%02d", secs) + "." + String.format("%03d", milliseconds) + "/s");
            } else {
                score.setText(String.format("%01d", secs) + "." + String.format("%03d", milliseconds) + "/s");
            }
            timeHandler.postDelayed(timeRunnable, 0);
        }
    };

    timeHandler.postDelayed(timeRunnable, 0);
}

现在，秒表速度降低了。 我的时间每隔20毫秒增加1毫秒，而不是像之前在问题中提到的那样增加10毫秒，因为这更适合我。当然，您可以将此20更改为您想要的任何内容。

如何在android中创建一个慢秒表？

1 个答案: