如何在没有 CardLayout 的情况下在两个 JPanel 之间切换？

问题描述

我在 Swing 中构建了一个游戏，我有两个 JPanel 用于菜单和游戏本身。我想使用 JButtons 从菜单面板切换到游戏面板，从游戏切换到菜单。但是每次从菜单切换到游戏时，我都想重新开始游戏并从菜单面板中的某个 textField 发送玩家的姓名。所以我现在需要制作游戏面板的实例。我该怎么做？

这是菜单面板：

public class MenuPanel extends JPanel {
    
    private JPanel contentPane;
    private JTextField txtName;

    public MenuPanel(JPanel panel) {
        setLayout(null);
        contentPane = panel;

        JButton btnStart = new JButton("Click to start the game");
        btnStart.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                cardlayout cardlayout = (cardlayout) contentPane.getLayout();
                cardlayout.show(contentPane,"Game Panel");
            }
        });
        btnStart.setFont(new Font("Baskerville Old Face",btnStart.getFont().getStyle(),25));
        btnStart.setBounds(290,510,290,70);
        add(btnStart);

        txtName = new JTextField();
        txtName.setBounds(450,460,160,20);
        add(txtName);
        txtName.setColumns(10);

        JLabel lblName = new JLabel("Enter your name:");
        lblName.setForeground(SystemColor.text);
        lblName.setFont(new Font("Bradley Hand ITC",Font.BOLD,20));
        lblName.setBounds(260,180,20);
        add(lblName);

        JLabel lblGame = new JLabel("RUMMIKUB GAME");
        lblGame.setForeground(new Color(0,0));
        lblGame.setHorizontalAlignment(SwingConstants.CENTER);
        lblGame.setFont(new Font("Goudy Old Style",lblGame.getFont().getStyle(),50));
        lblGame.setBounds(180,100,500,140);
        add(lblGame);

    }
}

这是游戏面板：

public class GamePanel extends JPanel {

    private JPanel contentPane;
    private JButton btnReturnToMenu;
    private TileButton[][] buttons = new TileButton[Constants.ROWS_IN_PLAYER_BOARD][Constants.COLUMNS_IN_PLAYER_BOARD];
    private JLabel lblHello;
    private TileButton btnThrownByPlayer;
    private TileButton btnThrownByOpponent;
    private Point clickedButton;
    private JButton btnPullFromPool;
    private JButton btnFinish;
    private Game game;

    public GamePanel(String firstPlayerName,String secondplayerName,JPanel panel) {
        setLayout(null);
        contentPane = panel;

        clickedButton = null;
        game = new Game(firstPlayerName,secondplayerName);

        lblHello = new JLabel("hello " + firstPlayerName + " and " + secondplayerName);
        lblHello.setBounds(10,10,250,40);
        add(lblHello);

        //initiate exit button.
        btnReturnToMenu = new JButton("Return To Menu");
        btnReturnToMenu.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                cardlayout cardlayout = (cardlayout) contentPane.getLayout();
                cardlayout.show(contentPane,"Menu Panel");
            }
        });
        btnReturnToMenu.setFont(new Font("Mongolian Baiti",16));
        btnReturnToMenu.setBounds(10,70,200,40);
        add(btnReturnToMenu);

        // initiate finish button.
        btnFinish = new JButton("Finish");
        btnFinish.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                if (btnFinish.isEnabled()) {
                    if (game.finish()) {
                        JOptionPane.showMessageDialog(null,"You finish the game.\nCongratulations,you are the winner!!!");
                        cardlayout cardlayout = (cardlayout) contentPane.getLayout();
                        cardlayout.show(contentPane,"Finish Panel");
                    } else {
                        btnFinish.setEnabled(false);
                        JOptionPane.showMessageDialog(null,"You didn't finish the game yet");
                    }
                }
            }
        });
        btnFinish.setFont(new Font("Mongolian Baiti",16));
        btnFinish.setBounds(750,50,40);
        add(btnFinish);
    }
}

这是框架：

public class MainFrame extends JFrame {

    private JPanel contentPane;
    private GamePanel gamePanel;
    private MenuPanel menuPanel;
    private FinishPanel finishPanel;

    private MainFrame() {
        //super();
        setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(233,55,900,627); 
        setResizable(false);

        JPanel contentPane = new JPanel();

        contentPane.setBorder(BorderFactory.createEmptyBorder(0,0));
        contentPane.setLayout(new cardlayout());

        menuPanel = new MenuPanel(contentPane);
        gamePanel = new GamePanel("","",contentPane);
        finishPanel = new FinishPanel(contentPane);

        contentPane.add(menuPanel,"Menu Panel");
        contentPane.add(gamePanel,"Game Panel");       
        contentPane.add(finishPanel,"Finish Panel");

        getContentPane().add(contentPane,BorderLayout.CENTER);
        pack();
        setLocationByPlatform(true);
        setVisible(true);
    }

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

感谢您的帮助！

解决方法

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