java用3个单选按钮和一个提交按钮创建一个基本框架

Question

public void rotateGUI() {
   JFrame rotateFrame = new JFrame("Image Rotation");
   JRadioButton rotateLeft = new JRadioButton("Rotate Left");
   JRadioButton rotateRight = new JRadioButton("Rotate Right"); 
   JRadioButton upsideDown = new JRadioButton("Rotate Upside Down");
   JButton submit = new JButton("Submit");
   ButtonGroup rotateButtons = new ButtonGroup();
   rotateLeft.setBounds(120,30,120,50);
   rotateRight.setBounds(120,30,120,50);
   upsideDown.setBounds(120,30,120,50);
   submit.setBounds(125,90,80,30);
   rotateFrame.add(rotateLeft);
   rotateFrame.add(rotateRight);
   rotateFrame.add(upsideDown);
   rotateFrame.add(submit);
   rotateButtons.add(rotateLeft);
   rotateButtons.add(rotateRight);
   rotateButtons.add(upsideDown);
   submit.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent e) {
    if (rotateLeft.isSelected()) {    
          rotationAngle = 90; 
       } 
       else if (upsideDown.isSelected()) { 

              rotationAngle = 180; 
       } 
       else if (rotateRight.isSelected()){ 

              rotationAngle = 270;
       }
    }

        });
    rotateFrame.setBounds(200, 200, 400, 200);
    rotateFrame.setVisible(true);

我正在尝试制作一个有3个单选按钮和一个提交按钮的框架，但无论我何时运行它，它都只是一个有一个大提交按钮的框架。我的代码有什么问题？提前谢谢

Answer 1

使用Swing Layout Managers而不是尝试自己放置和调整所有内容的大小

这是我设计的图形用户界面

这是我做的改动

1. 我添加了对SwingUtilities invokeLater方法的调用，以确保在事件调度线程上创建和执行Swing组件

2. 我嵌套了JPanel，以便使用BorderLayout和GridLayout

3. 我将Swing组件方法调用分组在一起，并按行和列组织它们。这使得查找和修复问题变得更加容易

这是密码

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.SwingUtilities;

public class ExampleGUI {

    private int rotationAngle;

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new ExampleGUI().rotateGUI();
            }
        });
    }

    public void rotateGUI() {
        JFrame rotateFrame = new JFrame("Image Rotation");
        rotateFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel mainPanel = new JPanel();
        mainPanel.setLayout(new BorderLayout());
        mainPanel.setPreferredSize(new Dimension(300, 100));

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new GridLayout(0, 1));

        ButtonGroup rotateButtons = new ButtonGroup();
        JRadioButton rotateLeft = new JRadioButton("Rotate Left");
        rotateButtons.add(rotateLeft);
        JRadioButton rotateRight = new JRadioButton("Rotate Right");
        rotateButtons.add(rotateRight);
        JRadioButton upsideDown = new JRadioButton("Rotate Upside Down");
        rotateButtons.add(upsideDown);

        buttonPanel.add(rotateLeft);
        buttonPanel.add(rotateRight);
        buttonPanel.add(upsideDown);

        mainPanel.add(buttonPanel, BorderLayout.BEFORE_FIRST_LINE);

        JButton submit = new JButton("Submit");
        submit.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (rotateLeft.isSelected()) {
                    rotationAngle = 90;
                } else if (upsideDown.isSelected()) {
                    rotationAngle = 180;
                } else if (rotateRight.isSelected()) {
                    rotationAngle = 270;
                }
            }
        });
        mainPanel.add(submit, BorderLayout.AFTER_LAST_LINE);

        rotateFrame.add(mainPanel);
        rotateFrame.pack();
        rotateFrame.setLocationByPlatform(true);
        rotateFrame.setVisible(true);
    }

}