Question

我有以下简单的代码，我不知道如何修改它，以便有3个单独的面板切换到，每个按钮一个：

package TouristLocations;

import javax.swing.*;

import java.awt.*;

public class buildApp extends JFrame {
  /**
     * 
     */
    private static final long serialVersionUID = 1L;

public static void main(String[] args){
    JFrame frame = new JFrame("Test");
    frame.setSize(400,500);
    frame.setVisible(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();

    JLabel title = new JLabel("Locations");
    title.setFont(new Font("Serif", Font.BOLD, 40));
    c.gridx = 0;
    c.gridy = 0;
    c.gridwidth = 3;
    frame.add(title, c);

    JButton b1 = new JButton("View Locations");
    c.gridx = 0;
    c.gridy = 1;
    c.gridwidth = 1;
    frame.add(b1, c);

    JButton b2 = new JButton("Insert Locations");
    c.gridx = 1;
    c.gridy = 1;
    frame.add(b2, c);

    JButton b3 = new JButton("Help");
    c.gridx = 2;
    c.gridy = 1;
    frame.add(b3, c);

    TextArea text1 = new TextArea(15,40);
    c.gridx = 0;
    c.gridy = 2;
    c.gridwidth = 3;
    frame.add(text1, c);

    frame.pack();


  }
}

谢谢

Answer 1

听起来你应该考虑使用JTabbedPane。

Answer 2

除了How to Use Tabbed Panes之外，您还可以查看CardLayout，提及here和here。

Answer 3

您应该创建一个主容器：

JPanel mainContainer = new JPanel();

//creation of each child
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel();

...所以每个按钮必须将这些面板添加到主容器中并调整新的面板大小，如下所示：

//for button1:
mainContainer.add(panel1);
panel1.setSize(mainContainer.getSize());

...对于button2操作，您必须遵循上述相同的方式。

（Java新手 - 面板转换）如何在框架中的面板之间切换

3 个答案: