Question

您好我正在尝试创建以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怎么能实现这一点当我运行我的progrram它抛出异常ArrayIndexOutofBound请求解决我的问题

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);
    }
}

提前致谢

Answer 1

组布局适用于UI设计软件，而不是人类。避免使用它。

相反，您有很多内置布局管理器，如果您需要通过嵌套布局无法（或不应该）实现的特殊行为，则实现自定义布局管理器并不是很困难（通过嵌套具有不同布局的组件。）

我不确定您尝试实现的布局是什么，但是如果您指的是可以在JScrollPane或类似内容中向下滚动的图像列表那，你应该考虑FlowLayout甚至BoxLayout。您可以使用其他布局来完成此任务，但这两个布局最容易使用。

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1 个答案: