试图使用卡片布局,但不能使节目工作

时间:2013-10-07 07:05:45

标签: java cardlayout

我试图使用卡片布局,并且我在顶部有两个按钮,用于更换卡片,但由于某种原因它不会工作,下一个方法有效但是节目或第一个\最后没有,当然我不能使用next,因为我想为每个按钮都有一张特定的卡片,这是我的代码:

     cards = new CardLayout();
    cardPanel = new JPanel();
    cardPanel.setLayout(cards);
    cards.show(cardPanel, "gapas");

    JPanel firstCard = new JPanel();
    firstCard.setBackground(Color.WHITE);;


    JPanel secondCard = new JPanel();
    secondCard.setBackground(Color.blue);


    cardPanel.add(firstCard, "kalam");
    cardPanel.add(secondCard, "gapan");

    guiFrame.add(tabsPanel,BorderLayout.NORTH);
    guiFrame.add(cardPanel,BorderLayout.CENTER);
    guiFrame.setVisible(true);
}

ActionListener action = new ActionListener() {

    @Override
    public void actionPerformed(ActionEvent e) {
        if(e.getActionCommand().matches("kalam")){
            cards.show(cardPanel,"kalam");
            System.out.println("kalam");
        }
        else{
            cards.show(cardPanel, "gapas");
            System.out.println("gapas");
        }

    }
};

2 个答案:

答案 0 :(得分:0)

文件说明: show(Container parent,String name)使用addLayoutComponent方法翻转到使用指定名称添加到此布局的组件。

您添加了两项:

  • 卡拉姆
  • gapan

但你试图表明:gapas。

另外我会先添加然后尝试2节目。

答案 1 :(得分:0)

我想你想要这样的东西。

public class TestCard extends JFrame implements ActionListener {

CardLayout cards;
JPanel cardPanel, tabsPanel;
JButton b1, b2;

public TestCard() {
    b1= new JButton("kalam");
    b2= new JButton("gapas");
    tabsPanel = new JPanel();
    cards = new CardLayout();
    cardPanel = new JPanel();
    cardPanel.setLayout(cards);

    JPanel firstCard = new JPanel();
    firstCard.setBackground(Color.WHITE);


    JPanel secondCard = new JPanel();
    secondCard.setBackground(Color.blue);


    cardPanel.add(firstCard, "kalam");
    cardPanel.add(secondCard, "gapas");
    tabsPanel.add(b1);
    tabsPanel.add(b2);

    add(tabsPanel, BorderLayout.NORTH);
    add(cardPanel, BorderLayout.CENTER);
    b1.addActionListener(this);
    b2.addActionListener(this);
    setSize(800, 600);

    cards.show(cardPanel, "gapas");
    setVisible(true);
}

@Override
public void actionPerformed(ActionEvent e) {
    if (e.getActionCommand().matches("kalam")) {
        cards.show(cardPanel, "kalam");
        System.out.println("kalam");
    } else {
        cards.show(cardPanel, "gapas");
        System.out.println("gapas");
    }
}
public static void main(String[] args) {
    new TestCard();
}
}