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java-CardLayout,通过ButtonClick在JPanels之间切换

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我想通过单击JPanels上的按钮在JPanels之间切换.

例如:
我有一个带有JButton simknop的JPanel sim和一个带有JButton helpknop的JPanel帮助
我想通过单击按钮在这两个JPanel之间切换.当我单击JButton simknop时,JPanel帮助应该
出现,当我单击JButton帮助时,应显示JPanel sim.

您可以在下面找到不同的类:

main.java

public class main extends JFrame
{

    JPanel cards;
    sim sim;
    help help;

    public main()
    {
        this.setSize(1024,768);
        //this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setTitle("Crazy Bombardement");
        this.setLocation(800, 100);//standaard in de hoek van het scherm

        cards = new JPanel();
        cards.setLayout(new CardLayout());
        sim = new sim();
        help = new help();

        cards.add(sim, "SIM");
        cards.add(help, "HELP");    

        this.add(cards);
        this.setVisible(true);
    }

    public static void main(String[] args) 
    {
        new main();
    }

sim.java

public class sim extends JPanel
{
    JButton simknop;

    public sim()
    {
        simknop = new JButton("simknop");
        this.add(simknop);
        this.setBackground(Color.black);
    }

}

help.java

public class help extends JPanel
{
    JButton helpknop;

    public help()
    {
        helpknop = new JButton("helpknop");
        this.add(helpknop);
        this.setBackground(Color.red);
    }

我想为此使用CardLayout,但无法弄清楚如何使其能够监听不同的ActionListeners.

任何帮助是极大的赞赏!

解决方法:

1)按钮不应位于CardLayout的每个面板上.无论卡面板上显示的是哪张卡,它们都必须位于始终可见的另一个外部面板上.

2)正确定位按钮后,您将向每个按钮添加一个ActionListener,其actionPerformed方法类似于(以SIM卡按钮为例):

CardLayout cl = (CardLayout) cards.getLayout();
cl.show(cards, "SIM");

相关阅读:How To Use CardLayout

编辑:从理论上讲,您可以在卡面板上直接放置按钮,但它是每个面板上的对面按钮(即SIM卡按钮在帮助面板上,反之亦然).

标签:cardlayout,swing,awt,layout-manager,java
来源: https://codeday.me/bug/20191031/1972670.html