Java 的CardPanel用法

Java code?

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card = new CardLayout(5,5);//5,5是组件间隔                pane = new JPanel(card);         pane.add(p_1, "p1");//添加panel并指定名字         pane.add(p_2, "p2");         pane.add(p_3, "p3");     card.show(pane, "p1");//显示指定的panel

完整代码

Java code?

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import java.awt.BorderLayout; import java.awt.CardLayout; import java.awt.Color; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.UIManager;   /**  * Java中CardLayout布局管理器使用的小例子  *   * @blog http://blog.csdn.net/mq612  */ public class testCardLayout extends JFrame {     private JPanel        pane        = null; // 主要的JPanel，该JPanel的布局管理将被设置成CardLayout     private JPanel        p            = null; // 放按钮的JPanel     private CardLayout    card        = null; // CardLayout布局管理器     private JButton        button_1    = null; // 上一步     private JButton        button_2    = null; // 下一步     private JButton        b_1            = null, b_2 = null, b_3 = null; // 三个可直接翻转到JPanel组件的按钮     private JPanel        p_1            = null, p_2 = null, p_3 = null; // 要切换的三个JPanel       public testCardLayout()     {         super("CardLayout Test");         try         {             // 将LookAndFeel设置成Windows样式             UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");         } catch (Exception ex)         {             ex.printStackTrace();         }         /** 创建一个具有指定的水平和垂直间隙的新卡片布局 */         card = new CardLayout(5, 5);         pane = new JPanel(card); // JPanel的布局管理将被设置成CardLayout         p = new JPanel(); // 构造放按钮的JPanel         button_1 = new JButton("< 上一步");         button_2 = new JButton("下一步 >");         b_1 = new JButton("1");         b_2 = new JButton("2");         b_3 = new JButton("3");         b_1.setMargin(new Insets(2, 2, 2, 2));         b_2.setMargin(new Insets(2, 2, 2, 2));         b_3.setMargin(new Insets(2, 2, 2, 2));         p.add(button_1);         p.add(b_1);         p.add(b_2);         p.add(b_3);         p.add(button_2);         p_1 = new JPanel();         p_2 = new JPanel();         p_3 = new JPanel();         p_1.setBackground(Color.RED);         p_2.setBackground(Color.BLUE);         p_3.setBackground(Color.GREEN);         p_1.add(new JLabel("JPanel_1"));         p_2.add(new JLabel("JPanel_2"));         p_3.add(new JLabel("JPanel_3"));         pane.add(p_1, "p1");//添加panel并指定名字         pane.add(p_2, "p2");         pane.add(p_3, "p3");         /** 下面是翻转到卡片布局的某个组件，可参考API中的文档 */         button_1.addActionListener(new ActionListener()             { // 上一步的按钮动作                     public void actionPerformed(ActionEvent e)                     {                         card.previous(pane);                     }                 });         button_2.addActionListener(new ActionListener()             { // 下一步的按钮动作                     public void actionPerformed(ActionEvent e)                     {                         card.next(pane);                     }                 });         b_1.addActionListener(new ActionListener()             { // 直接翻转到p_1                     public void actionPerformed(ActionEvent e)                     {                         card.show(pane, "p1");                     }                 });         b_2.addActionListener(new ActionListener()             { // 直接翻转到p_2                     public void actionPerformed(ActionEvent e)                     {                         card.show(pane, "p2");                     }                 });         b_3.addActionListener(new ActionListener()             { // 直接翻转到p_3                     public void actionPerformed(ActionEvent e)                     {                         card.show(pane, "p3");                     }                 });         this.getContentPane().add(pane);         this.getContentPane().add(p, BorderLayout.SOUTH);         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);         this.setSize(300, 200);         this.setVisible(true);     }       public static void main(String[] args)     {         new testCardLayout();     }   }