Question

如何在不冻结Android应用程序的情况下进行倒计时？例如，倒数计算10到1倒计时。

Answer 1

从我的问题中我可以得到的，你很可能遇到麻烦，因为你在主（UI）线程中做了某种倒计时。这肯定会导致应用程序在计时器的持续时间内冻结。只需使用计时器，并执行以下操作：

//global variables
private int currTime = 10;
private TextView myTimer;//need to initialize this in your layout using findViewById, or programmatically

final Timer t = new Timer();
currTime = 10;
t.scheduleAtFixedRate(new TimerTask() {
    @Override
    public void run() {
        runOnUiThread(new Runnable() {//You need this, or a Handler to ensure the UI is changed on the correct thread.
            currTime--;
            myTimer.setText(currTime);//myTimer is a global reference to your TextView.
            if (currTime == 0)
                t.cancel();
        });
    }
}, 10000);//note that this is the duration in milliseconds (1/1000 of a second) - so 10000 for 10 seconds.

在不冻结Android应用程序的情况下进行倒计时？

1 个答案: