如何在多个JFrame的情况下处理动作事件 [英] how to handle action events in case of more than one JFrame

问题描述

我从互联网上下载了一个蛇游戏项目，最初这个项目包含三个java文件，即

 1。 Engine.java 
 2. Snake.java 
 3. Gameoard.java 

当我运行Engine.java时
，游戏开始运行。



现在我已对其进行了一些修改以改善游戏的交互性，即我添加了两个名为
$ b的JDialog $ b

 1。 PlayGame.java 
 
 2.RulesDialog.java 

 PlayGame.java有三个JButtons： - 播放按钮，规则按钮，退出

  - 当点击播放按钮时，游戏应该开始
 
  - 当规则按钮被点击RulesDialog.java的JDialog出现和
 
  - 当退出按钮被点击应用程序或游戏应关闭。

按钮的动作设置在各个按钮的

 actionPerformed（）

方法中。

现在我面临的问题是当我< pre lang =text>点击播放按钮时，屏幕上会显示游戏窗口，但蛇不是移动

我无法指出如何解决这个问题..



所以plz帮助我出去

解决方案

我的建议是做有的actionPerformed 通话sepperate方法对于每个bu tton：

  public   class 演示
  extends  JFrame 
  implements  ActionListener 
 {
 
 私人 JButton优先; 
 私人 JButton秒; 
 私人 JButton第三名; 
  public  Demo（）{
 
 first =  new  JButton（   first）; 
 first.addActionListener（ this ）; 
 calcFrame.add（第一个）; 
 
 second =  new  JButton（ 第二）; 
 second.addActionListener（ this ）; 
 calcFrame.add（第二个）; 
 
 third =  new  JButton（ 第三）; 
 third.addActionListener（ this ）; 
 calcFrame.add（第三个）; 
} 
 
  public   void  actionPerformed（ActionEvent e）{
  if （e.getSource（）== first）
 {
 actionFirst（）; 
}  else   if （e.getSource（）== second）
 { 
 actionSecond（）; 
}  else   if （e.getSource（）== third）
 { 
 actionThird（）; 
} 
} 
} 

I have downloaded a snake game project from the internet, initially this project contains three java files namely

1. Engine.java 
2. Snake.java 
3. Gameoard.java

when i runs Engine.java, game starts running .

Now i have done some modification in it to improve the interactivity of the game, i.e i have added two JDialog named

1. PlayGame.java

2.RulesDialog.java

PlayGame.java has three JButtons :- Play button, Rules Button , Exit

-when play button gets clicked game should start

-when rules button gets clicked RulesDialog.java JDialog appears and 

-when exit button gets clicked application or game should be closed.

Action of button is set in the

actionPerformed()

method of individual buttons.

Now problem i am facing is when i <pre lang="text">click Play button game window is visible on the screen but snake is not moving

and i am not getting to point how to resolve this problem ..

So plz help me out

解决方案

My recommendation would be to do have actionPerformed call sepperate methods for each button:

public class Demo
      extends JFrame
      implements ActionListener
{

    private JButton first;
    private JButton second;
    private JButton third;
    public Demo() {

        first = new JButton("first");
        first.addActionListener(this);
        calcFrame.add(first);

        second = new JButton("second");
        second.addActionListener(this);
        calcFrame.add(second);

        third = new JButton("third");
        third.addActionListener(this);
        calcFrame.add(third);
    }

    public void actionPerformed(ActionEvent e) {
        if(e.getSource() == first)
        {
            actionFirst();
        } else if(e.getSource() == second)
        {
            actionSecond();
        } else if(e.getSource() == third)
        {
            actionThird();
        }
    }  
}

这篇关于如何在多个JFrame的情况下处理动作事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！