如何在JButton单击并显示另一个JInternalFrame时关闭JInternalFrame?

时间:2013-12-25 16:10:42

标签: java swing jbutton jdesktoppane

例如:

JButton1点击JInternalFrame1时显示JDesktopPaneJButton2点击JInternalFrame1关闭并JInternalFrame2显示JDesktopPane时。

之前

编辑:使用评论代码

if (JInternalFrame1 == null) { 
    JInternalFrame1 = new FJInternalFrame(); 
    Desktop.add(JInternalFrame1); 
    JInternalFrame1.toFront();
} else { 
    JInternalFrame1.dispose();
}

1 个答案:

答案 0 :(得分:4)

看看这个例子。我创建了一个自定义JInternalFrame,每次创建一个新框架时都有不同的标题。当您单击该按钮时,将创建一个新按钮并删除旧按钮

以下是可以帮助您的重要代码。如果桌面大小等于0,我添加一个新框架,另外我删除前一个框架,添加一个新框架,然后重新验证

   button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            if (desktop.getAllFrames().length == 0) {
                desktop.add(new MyInternalFrame());

            } else {
                desktop.remove(0);
                desktop.add(new MyInternalFrame());
                revalidate();
                repaint();
            }
        }
    });

这是完整的代码。这是两个不同的文件。

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

public class InternalFrameDemo1 extends JPanel {

    JDesktopPane desktop;
    JButton button;

    public InternalFrameDemo1() {
        desktop = new JDesktopPane();
        button = new JButton("Get Next Frame");

        setLayout(new BorderLayout());
        add(desktop, BorderLayout.CENTER);
        add(button, BorderLayout.SOUTH);

        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (desktop.getAllFrames().length == 0) {
                    desktop.add(new MyInternalFrame());

                } else {
                    desktop.remove(0);
                    desktop.add(new MyInternalFrame());
                    revalidate();
                    repaint();
                }
            }
        });
    }

    public static void createAndShowGui() {
        JFrame frame = new JFrame();
        frame.add(new InternalFrameDemo1());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationByPlatform(true);
        frame.pack();
        frame.setVisible(true);

    }

    public Dimension getPreferredSize() {
        return new Dimension(500, 500);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGui();
            }
        });
    }
}

import javax.swing.JInternalFrame;

public class MyInternalFrame extends JInternalFrame {
    static int openFrameCount = 0;
    static final int xOffset = 30, yOffset = 30;

    public MyInternalFrame() {
        super("Document #" + (++openFrameCount),
              true, //resizable
              true, //closable
              true, //maximizable
              true);//iconifiable

        setSize(300,300);
        setLocation(xOffset*openFrameCount, yOffset*openFrameCount);
        setVisible(true);
    }
}

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