摇摆计时器不停止 [英] Swing timer not stopping

问题描述

我正在使用摆动计时器在Netbeans中制作一个倒数时钟:

I'm using the swing Timer to make a countdown clock in Netbeans:

public void startTimer() {

    System.out.println(right + "value");
    ActionListener listener = new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent event) {
            System.out.println("action");
            timerLabel.setText("" + seconds);
            --seconds;
            System.out.println(seconds);
            if (seconds == -1 && seconds < 0) {
                System.out.print("zero");
                //displayTimer.stop();
                wrong();
                dispose();
            }
        }
    };
    displayTimer = new Timer(1000, listener);
    displayTimer.setInitialDelay(100);
    displayTimer.start();

    if (right == null) {
        System.out.println("null");
    } else if (right == true) {
        System.out.println("truehere");
        displayTimer.stop();
        right = null;
        seconds = 20;
        displayTimer.setDelay(10000);
        displayTimer.setInitialDelay(100);
        displayTimer.start();
    } else if (right == false) {
        System.out.print("wrong");
        //displayTimer.stop();
        seconds = 20;
    }


}

我只是使用System.out.print来测试程序，它不是真实程序的一部分.我调用了stop()方法，但计时器继续计数.另外，我通过 displayTimer = new javax.swing.Timer(10000，listener); 创建了一个新计时器，但是它的计数速度是它的两倍.有人可以帮忙吗?

I just use System.out.print to test the program, it's not a part of the real program. I call the stop() method but the timer continues to count. Also, I create a new timer by displayTimer = new javax.swing.Timer(10000, listener); but it counts twice as fast. Can anyone help?

这是我的计时器(属于SSCCE):

Here is my timer (sort of SSCCE):

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Scanner;

import javax.swing.*;

public class JavaApplication8 {
 public static void startTimer() {
    ActionListener listener = new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent event) {
            int seconds = 20;
            seconds--;
            System.out.println(seconds);

            if (seconds == -1 && seconds < 0) {
                System.out.print("zero");
            }
        }
    };
    Timer displayTimer = new Timer(1000, listener);
    displayTimer.setInitialDelay(100);
    displayTimer.start();
 }

public static void main(String[] args) {
    System.out.println("Type win to win!");

    startTimer();

    String read;
    Boolean right;
    int seconds;

    Scanner scanIn = new Scanner(System.in);
    read = scanIn.nextLine();

    if (read.equals("win")){
        right = true;
    }
    else{
        right = false;
    }

    if (right == true) {
        System.out.println("correct");
        //displayTimer.stop();
        right = null;
        seconds = 20;
        //displayTimer.setDelay(10000);
        //displayTimer.setInitialDelay(100);
        //displayTimer.start();
    } else if (right == false) {
        System.out.print("incorrect");
        //displayTimer.stop();
        seconds = 20;
        right = null;
    }
}
}

它无法正常工作，因为没有显示秒，但是它确实显示了20次，这正是我想要的.这只是在自己的应用程序中，在我的真实程序中，更容易发现问题.

it doesn't work right in that the seconds don't show up, but it does show 20 times which is what I want. This is just in its own application, in my real program it is easier to see the problem.

我已经注意到，游戏第一次运行就可以正常运行.然后，我再次单击播放"(重置整个游戏)，运行速度快了两倍.也许我没有正确重置某些内容?这是我的重置代码:

I've noticed that the first time the game runs it works fine. Then I click play again (resets the whole game) and it goes twice as fast. Maybe I'm not resetting something correctly? Here is my reset code:

// Reset Everything
    PlayFrame.seconds = 20;
    PlayFrame.winnings = 0;
    PlayFrame.right = false;
    //PlayFrame.displayTimer.stop();
    PlayFrame.questionLabel.setText(null);
    PlayFrame.count = 0;
    WelcomeFrame WFrame = new WelcomeFrame();
    WFrame.setVisible(true);
    setVisible(false);                             
    PlayFrame P = new PlayFrame();
    P.dispose();

    if (PlayFrame.seconds == -1 && PlayFrame.seconds < 0){
        PlayFrame.displayTimer.stop();
    }
}

推荐答案

它只是伪代码，以了解如何启动和停止计时器.

Its just pseudo code to see how timer can be started and stopped.

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.Timer;

public class TimerOnJLabel extends JFrame {

    private static final long serialVersionUID = 1L;        
    long start = System.currentTimeMillis();
    long elapsedTimeMillis;
    int sec = 5;
    Timer timer;

    public TimerOnJLabel() {
        super("TooltipInSwing");
        setSize(400, 300);
        getContentPane().setLayout(new FlowLayout());
        final JLabel b1;
        final JRadioButton jrb = new JRadioButton();
        b1 = new JLabel("Simple tooltip 1");

        ActionListener timerTask = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                elapsedTimeMillis = System.currentTimeMillis();
                b1.setText("Timer : " + (elapsedTimeMillis-start)/1000+" ::::: " +sec);
                System.out.println("Timer working: " + sec);
                if(--sec == 0){
                    timer.stop();
                    System.out.println("Timer Stopped");
                }
            }
        };
        timer = new Timer(1000, timerTask);
        System.out.println("Timer Started");
        timer.start();

        getContentPane().add(b1);

        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);          
        setVisible(true);
    }

    public static void main(String args[]){
        new TimerOnJLabel();
    }
}

我希望有帮助.

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