Question

是否可以将带有JButton的JPanel添加到Split JPanel？现在，我将带有JButton的JPanel添加到JFrame中，但我希望它在带有其他JPanel的JPanel上。当我尝试这样做时，我会得到一个带有分隔线的完全空白的JPanel。

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public class Panel extends JPanel implements Runnable, ActionListener {

public Panel(){
    JFrame frame = new JFrame();
        ctsMenu = new JPanel(new GridLayout(2,2));
        ctsMenu.setPreferredSize(new Dimension(500,500));



                for (int iRows = 0; iRows < 2 ; iRows++){
                for (int iColumns = 0; iColumns < 2; iColumns++){
                    sGrid[iRows][iColumns] = new JButton ("("+iRows+","+iColumns+")");
                    ctsMenu.add(sGrid[iRows][iColumns]);
                    sGrid[iRows][iColumns].addActionListener(this);
                panel.add(ctsMenu);
                }
            }

            sGrid[0][0].setText("A");
            sGrid[0][1].setText("B");
            sGrid[1][0].setText("C");
            sGrid[1][1].setText("D");

            frame.setContentPane(panel);
            frame.pack();
            frame.setVisible(true);
}}
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public MainFrame()
    {

            setTitle( "Split Pane Application" );
            setBackground( Color.GREEN );

            JPanel topPanel = new JPanel();
            topPanel.setLayout( new BorderLayout() );
            getContentPane().add( topPanel );


            createPanel1();
            createPanel2();
            createPanel3();
            createPanel4();


            splitPaneV = new JSplitPane( JSplitPane.VERTICAL_SPLIT );
            topPanel.add( splitPaneV, BorderLayout.CENTER );
            splitPaneV.setDividerLocation(300);
            splitPaneV.setLeftComponent( gamePanel);
            //  gamePanel.addKeyListener(new KeyListener());
            gamePanel.setFocusable(true);
            gamePanel.requestFocusInWindow();
            splitPaneV.setRightComponent( panel3 );
        }
    }

    public void createPanel1(){
    // deleted to take up less space
    }

    public void createPanel2(){
    // deleted to take up less space
    }
    public void createPanel3(){
    panel3 = new Panel();   
    }

    public void createPanel4(){
        //deleted to take up less space
    }
}

Answer 1

你问：

是否可以将带有JButton的JPanel添加到Split JPanel？

是的，绝对有可能这样做。它类似于我们一直在做的事情：

import javax.swing.*;

public class SplitPaneEg {
   private static void createAndShowGui() {
      JPanel panel1 = new JPanel();
      panel1.setBorder(BorderFactory.createTitledBorder("Panel 1"));
      panel1.add(new JButton("Button 1"));
      panel1.add(new JButton("Button 2"));

      JPanel panel2 = new JPanel();
      panel2.setBorder(BorderFactory.createTitledBorder("Panel 2"));
      panel2.add(new JButton("Button 1"));
      panel2.add(new JButton("Button 2"));

      JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, panel1,
            panel2);

      JFrame frame = new JFrame("Split Pane Example");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.getContentPane().add(splitPane);
      frame.pack();
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
   }

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

你说：

现在，我将带有JButton的JPanel添加到JFrame中，但是我想在带有其他JPanel的JPanel上使用它。当我尝试这样做时，我会得到一个带有分隔线的完全空白的JPanel。

然后你的代码中有错误，但不幸的是根据你发布的代码，我怀疑我们中的任何人都可以做的不仅仅是猜测。如果您需要更具体的帮助，那么您需要发布一个展示问题的小型可运行示例sscce。

JPanel中的JButton在另一个JPanel中

1 个答案: