如何在swing中使用grouplayout创建图像滑块

Question

嗨，我正在尝试创建创建桌面应用程序在使用我使用组布局创建mu Gui我试图创建图像滑块，但我无法实现我如何才能实现这一点当我运行我的程序它抛出异常ArrayIndexOutofBound请解决我的问题

public class MyGui3 extends JFrame {
      private ImageIcon myImage1 = new ImageIcon ("E:\SOFTWARE\TrainPIS\res\drawable\yellow.png");
    private ImageIcon myImage2 = new ImageIcon ("E:\SOFTWARE\TrainPIS\res\drawable\c.jpg");
    private ImageIcon myImage3 = new ImageIcon ("E:\SOFTWARE\TrainPIS\res\drawable\yellow.png");
    private ImageIcon myImage4 = new ImageIcon ("E:\SOFTWARE\TrainPIS\res\drawable\yellow.png");
    private ImageIcon[] myImages = new ImageIcon[4];
 private int curImageIndex=0;
 private JButton jButton1;
    private JButton jButton2;
    private JPanel jPanel1;
      private JLabel jLabel1;
    public MyGui3() {
        jPanel1 = new JPanel();
        jLabel1 = new JLabel(myImage1);
         myImages[0]=myImage1;
            myImages[1]=myImage2;
            myImages[2]=myImage3;
            myImages[3]=myImage4;
        jButton1 = new JButton();
        jButton2 = new JButton();
       //ImageGallery.add(new JLabel (myImage1));
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setPreferredSize(new java.awt.Dimension(1386, 768));
        jPanel1.setBackground(new java.awt.Color(153, 153, 255));
        jLabel1.setText("jLabel1");
        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(197, 197, 197)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 249, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(141, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(54, 54, 54)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 284, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(130, Short.MAX_VALUE))
        );
        jButton1.setText("jButton1");
        jButton2.setText("jButton2");
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(455, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton2, javax.swing.GroupLayout.Alignment.TRAILING))
                .addGap(124, 124, 124)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(137, 137, 137))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(157, Short.MAX_VALUE)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(143, 143, 143))
            .addGroup(layout.createSequentialGroup()
                .addGap(325, 325, 325)
                .addComponent(jButton1)
                .addGap(18, 18, 18)
                .addComponent(jButton2)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

  jButton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
//OptionPane.showMessageDialog(frame,"Welcome to allhabad High Court");
if(curImageIndex>0 && curImageIndex <= 3)
                    { jPanel1.remove(0);
                        curImageIndex=curImageIndex-1;
                        ImageIcon TheImage= myImages[curImageIndex];
                        jLabel1 = new JLabel(TheImage);
                        jPanel1.validate();
                        jPanel1.repaint(); 
                    }
                else 
                    {   
                        jPanel1.remove(0);
                      jLabel1 = new JLabel(myImage1);
                        curImageIndex=0;
                        jPanel1.validate();
                        jPanel1.repaint();
                    }
}
});
   jButton2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
//JOptionPane.showMessageDialog(frame,"Welcome to allhabad High Court");

    if(curImageIndex>=0 && curImageIndex < 3)
                {    jPanel1.remove(0);
                    curImageIndex = curImageIndex + 1;
                    ImageIcon TheImage= myImages[curImageIndex];
                   jLabel1 = new JLabel(TheImage);
                    jPanel1.validate();
                    jPanel1.repaint(); 
                }
            else 
                {   
                    jPanel1.remove(0);
                   jLabel1 = new JLabel(myImage4);
                    curImageIndex=3;
                    jPanel1.validate();
                     jPanel1.repaint();
                }

}
});
        setTitle("Find");
        pack();
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String args[]) {
       MyGui3 g1=new MyGui3();
                g1.setVisible(true);
                g1.setExtendedState(JFrame.MAXIMIZED_BOTH);
                g1.setBackground(Color.yellow);
    }
}

Thanks in advance

Answer 1

组布局是为UI设计软件设计的，而不是人为的。避免使用。

相反，你有相当多的内置布局管理器选择，如果你需要特殊的行为，不能(或不应该)通过嵌套布局(通过嵌套不同布局的组件)来实现，实现一个自定义的布局管理器并不是很困难。

我不确定你想要实现的布局是什么，但如果你指的是一个可以在JScrollPane或类似的东西中向下滚动的图像列表，你应该考虑FlowLayout甚至BoxLayout。您还可以使用其他布局来完成此任务，但这两个将是最简单的。