Question

我将帧分为三个部分，例如粉红色背景中的水平部分和黄色和蓝色背景中的垂直部分，如图像中使用GridBagConstraints，enter image description here

我使用以下代码执行此操作，

 public Main() 
       {
           JFrame maFrame = new JFrame("The main screen"); //creating main Jframe
           maFrame.setSize(1000, 700);
           Container container = maFrame.getContentPane();
           container.setLayout(new GridBagLayout()); //setting layout of main frame
           GridBagConstraints cns = new GridBagConstraints(); //creating constraint

           JPanel headPanel = new JPanel(); //creating the header panel
           cns.gridx = 0;
           cns.gridy = 1;
           cns.weightx = 0.3;
           cns.weighty = 0.7;
           cns.anchor = GridBagConstraints.FIRST_LINE_START;
           cns.fill = GridBagConstraints.BOTH;
           maFrame.setLocationRelativeTo(null); //centering frame
           headPanel.setBackground(Color.YELLOW);
           container.add(headPanel, cns);

           JPanel panel = new JPanel();
           panel.setBackground(Color.BLUE);
           cns.gridx = 1;
           cns.gridy = 1;
           cns.weightx = 0.7;
           cns.weighty = 0.7;
           cns.anchor = GridBagConstraints.PAGE_START;
           cns.fill = GridBagConstraints.BOTH;
           container.add(panel, cns);

           JPanel panel1 = new JPanel();
           panel1.setBackground(Color.PINK);
           cns.gridx = 0;
           cns.gridy = 0;
           cns.gridwidth = 2;
           cns.weightx = 1.0;
           cns.weighty = 0.3;
           cns.anchor = GridBagConstraints.LAST_LINE_START;
           cns.fill = GridBagConstraints.BOTH;
           container.add(panel1, cns);     

           maFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //setting the default close operation of JFrame
           maFrame.pack();
           maFrame.setVisible(true); //making the frame visible
       }

我想将粉红色的背景部分分成3个部分，将黄色背景分成两部分。我试过这样做。但它不适合我。我不想使用splitpane来做到这一点。是否可以使用GridBagConstraints实现它？你能建议我这样做吗？提前谢谢。

Answer 1

使用GridLayout执行此操作的简单方法，将contentPane分为两行，然后将底行分为两列。

import javax.swing.*;
import java.awt.*;
class JpanelSplit {
    JFrame frame;
    JPanel contentPane;
    JPanel pinkPanel;
    JPanel yellowPanel;
    JPanel bluePanel;
    JPanel twoPanelContainer;

    public JpanelSplit() {
        frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        contentPane = new JPanel(new GridLayout(2,1));
        pinkPanel = new JPanel();
        pinkPanel.setBackground(Color.PINK);

        yellowPanel = new JPanel();
        yellowPanel.setBackground(Color.YELLOW);    

        bluePanel = new JPanel();
        bluePanel.setBackground(Color.BLUE);

        twoPanelContainer = new JPanel(new GridLayout(1,2));
        twoPanelContainer.add(yellowPanel);
        twoPanelContainer.add(bluePanel);

        contentPane.add(pinkPanel);
        contentPane.add(twoPanelContainer);

        frame.setContentPane(contentPane);
        frame.pack();
        frame.setVisible(true);

    }

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

如何在帧java中水平划分三个相等的部分

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