Java - 显示最小化的JFrame窗口

问题描述

如果一个JFrame窗口被最小化，有什么办法让它重新聚焦吗？

我试图让它点击某个点，然后恢复它是。

  while（isRunning）{
 start = System.currentTimeMillis（）; 
 frame.setState（Frame.ICONIFIED）; 
 robot.mouseMove（clickX，clickY）; 
 robot.mousePress（InputEvent.BUTTON1_MASK）; 
 frame.setState（Frame.NORMAL）; 
 Thread.sleep（clickMs  - （System.currentTimeMillis（） -  start））; 
 
  

解决方案

从 iconified 返回，您可以将其状态设置为正常：

  JFrame frame = new JFrame（...）; 
 //显示框架
 frame.setVisible（true）; 
 
 //睡眠5秒钟，然后最小化
 Thread.sleep（5000）; 
 frame.setState（java.awt.Frame.ICONIFIED）; 
 
 //睡眠5秒，然后恢复
 Thread.sleep（5000）; 
 frame.setState（java.awt.Frame.NORMAL）; 
  

来自，每当状态发生变化时触发一个接口来处理这些触发器。在这种情况下，您可以使用：

  public class YourClass implements WindowListener {
 ... 
 public void windowDeiconified（WindowEvent e）{
 //当窗口被恢复时做一些事情
} 
} 
  

如果您想要检查另一个程序的状态更改，则不存在纯Java解决方案，只需要获取窗口的 ID 。


If a JFrame window is minimized, is there any way to bring it back to focus?

I am trying to get it to click a certain point, then restore it.

            while (isRunning) {
                start = System.currentTimeMillis();
                frame.setState(Frame.ICONIFIED);
                robot.mouseMove(clickX, clickY);
                robot.mousePress(InputEvent.BUTTON1_MASK);
                frame.setState(Frame.NORMAL);
                Thread.sleep(clickMs - (System.currentTimeMillis() - start));
            }

解决方案

If you want to bring it back from being iconified, you can just set its state to normal:

JFrame frame = new JFrame(...);
// Show the frame
frame.setVisible(true);

// Sleep for 5 seconds, then minimize
Thread.sleep(5000);
frame.setState(java.awt.Frame.ICONIFIED);

// Sleep for 5 seconds, then restore
Thread.sleep(5000);
frame.setState(java.awt.Frame.NORMAL);

Example from here.

There are also WindowEvents that are triggered whenever the state is changed and a WindowListener interface that handles these triggers.In this case, you might use:

public class YourClass implements WindowListener {
  ...
  public void windowDeiconified(WindowEvent e) {
    // Do something when the window is restored
  }
}

If you are wanting to check another program's state change, there isn't a "pure Java" solution, but just requires getting the window's ID.

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