带条件的停止计时器仅在第一次工作？

Question

我正在编写“谁想成为百万富翁”游戏，并且我已经完成所有设置，这只是计时器的问题。

游戏的工作方式如下：如果用户正确回答了问题，他/她便会继续前进。如果不是，则游戏结束，他们可以选择再次玩。

游戏首次运行时，一切正常，计时器执行应做的事情-从30秒开始，倒计时，显示秒数。

但是，当用户单击“再次播放”按钮时，先前的计时器将继续使用新的计时器。像这样：

-timerA在用户迷路之前还剩20秒（由a表示）。

-timerB在下次玩游戏时开始（由b表示）。

输出：20a 29b 19a 28b 18a 27b 17a 26b ....... 2a 11b 1a 10b 9b 8b 7b 6b 5b 4b 3b
2b 1b

所以这是我的计时器类CountDown：

  import java.util.Timer;
  import java.util.TimerTask;

  public class CountDown {

      static Timer timer;
      public static int seconds = 30;

      public CountDown() {
          timer = new Timer();
          timer.schedule(new DisplayCountdown(), 0, 1000);
      }

      class DisplayCountdown extends TimerTask {

          int seconds = 30;

          public void run() {

                  if (seconds == 0) {
                      timer.cancel();
                      timer.purge();
                      return;
                  }

              if (seconds > 0) {
                  PlayFrame.timer.setText("" + seconds); //jLabel used to display seconds
                  seconds--;
                  if (seconds < 30) {
                      if (PlayFrame.right == true) { //check if question was answered correctly
                          System.out.print("true"); //testing purposes
                          PlayFrame.right = false;
                          PlayFrame.showQuestion();
                          PlayFrame.startTimer();
                          seconds = 0;
                          //break;
                      }
                      else if (PlayFrame.right == false) {
                          //break;
                      }
                  }

                  else if (seconds == 0) { //if time runs out its automatic wrong answer
                      PlayFrame.wrong();
                      //break;
                  }

                  else {
                      PlayFrame.wrong();
                      PlayFrame.timer.setText(null);
                      timer = new Timer();
                      //break;
                  }
              }
              System.out.println(seconds); // for testing purposes only
          }
      }
  }

这是我的一些PlayFrame：

  import java.awt.Color;
  import java.util.Timer;

  public class PlayFrame extends javax.swing.JFrame {

      public static void wrong() {
          //determines which losing frame to show
          if (count <= 2){
              LossLevel0 L0 = new LossLevel0();
              L0.setVisible(true);
          }
          else if (count > 2 && count <= 6 && count != 6){
              LossLevel1 L1 = new LossLevel1();
              L1.setVisible(true);
          }
          else {
              LossLevel1 L1 = new LossLevel1();
              L1.setVisible(true);
          }
          //"supposed" to stop the timer
          CountDown.timer.cancel();
          CountDown.timer.purge();
      }

      public static void startTimer() {
          //creates new CountDown object and timer, also resets seconds
          CountDown countdown = new CountDown();
          CountDown.timer = new Timer();
          CountDown.seconds = 30;
      }

我认为问题可能出在我重新启动游戏时。唯一的代码是我在游戏开始之前将所有变量重置为原始状态。像这样：

    // Reset Everything
    PlayFrame.count = 0;
    PlayFrame.answer = new String();
    PlayFrame.count = 0;
    PlayFrame.right = false;
    PlayFrame.winnings = 0;
    CountDown.seconds = 30;
    CountDown.timer = new Timer();
    CountDown.timer.cancel();
    CountDown.timer.purge();

请帮忙，如果您需要更多信息，请询问！

Answer 1

解决了，谢谢链接sage88！http://albertattard.blogspot.com/2008/09/practical-example-of-
swing-timer.html

并提供有关摆动计时器的更多帮助（以供将来对此主题进行搜索）http://www.asjava.com/swing/java-timer-
tutorial/

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

    if (right == true){
        System.out.print("true");
        displayTimer.stop();
        right = false;
        seconds = 30;
        displayTimer = new Timer(10000, listener);
        displayTimer.setDelay(10000);
        displayTimer.setInitialDelay(1);
        displayTimer.start();
    }
    else if (right == null){
        System.out.print("null");
        displayTimer.stop();
        seconds = 30;
        displayTimer = new Timer(10000, listener);
        displayTimer.setInitialDelay(1);
        displayTimer.setDelay(10000);
        displayTimer.start();
    }
}