如何在java中停止计时器 [英] How to stop a timer in java

问题描述

我有一个名为 timer 的方法，每次用户输入内容时我都会运行该方法，并且计时器计划为一分钟，但是如果用户在不到一分钟的时间内输入内容，然后重新调用自己，我希望计时器取消整个过程过程再次发生.我的方法如下:

I have a method called timer that I run everytime a user inputs something and the timer is scheduled for a minute, but I want the timer to cancel if the user enters something in less than a minute and then recall itself so the whole process happens again. My methods are below:

输入法

public static String run(){ 
     timer(); //runs everytime I call run()
     String s = input.nextLine();
     return s;
}

定时器方法

public static void timer() {
    TimerTask task = new TimerTask() {
        public void run() {
            System.out.println("Times up");
        }
    };
    long delay = TimeUnit.MINUTES.toMillis(1);
    Timer t = new Timer();
    t.schedule(task, delay);
}

方法 run() 每次有人输入内容时都会被调用，因此计时器会不断被调用，但这并不会停止之前的计时器，但我希望计时器停止，然后重新调用自身，以便不存在该问题.有人知道方法吗?

method run() keeps getting called everytime someone inputs something so timer keeps getting called but that doesn't stop the previous timers though, I want the timer to stop, then recall itself so that problem doesn't exist. Anyone know a way?

推荐答案

TimerTask 类有一个方法叫做 cancel() 您可以调用它来取消挂起的计时器.

The TimerTask class has a method called cancel() which you can call to cancel a pending timer.

在您的代码中，您可能需要修改您的 timer() 函数以返回对新创建的 TimerTask 对象的引用，以便您以后可以调用 <代码>取消().

In your code, you will probably need to modify your timer() function to return a reference to the newly created TimerTask object, so that you can later call cancel().

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