如何在android中显示计时器 [英] How to display the timer in android

问题描述

我想在 TextView 中以类似 [19:59] 的格式显示计时器.所以当我点击开始按钮时，计时器将显示如下，例如，我想设置最多 20 分钟，它会显示像 [19:58][19:87].谁能给出一些想法或示例代码?

I want to display the timer in TextView in the format of like [ 19:59].so when i click the start button ,the timer will display like this for example,i want to set upto 20 mintues,it will display like [19:58][19:87].can anyone give some ideas or example code?

推荐答案

您可以使用CountDownTimer.

http://developer.android.com/reference/android/os/CountDownTimer.html

     TextView _tv = (TextView) findViewById( R.id.textView1 );
    new CountDownTimer(20*60000, 1000) {

        public void onTick(long millisUntilFinished) {
            _tv.setText("seconds remaining: " +new SimpleDateFormat("mm:ss:SS").format(new Date( millisUntilFinished)));
        }

        public void onFinish() {
           _tv.setText("done!");
        }
     }.start();

要取消只需在计时器上调用取消即可.

To cancel just call cancel on the timer.

public final void cancel()

取消倒计时.

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