Question

我想生成多个面板（带有title，desc和detail按钮），这是一般结构：

但是当我将此代码放在for循环中时，它总是添加最后一项。

Panel panel_1 = new Panel();
panel_1.setBounds(23, 134, 378, 208);

JLabel lblNewLabel_2 = new JLabel("desc");
lblNewLabel_2.setBounds(0, 69, 189, 69);

JButton btnNewButton_2 = new JButton("Details");
btnNewButton_2.setBounds(104, 139, 189, 69);
panel_1.setLayout(null);

JLabel lblPrv = new JLabel("title");
lblPrv.setBounds(104, 0, 189, 69);
panel_1.add(lblPrv);
panel_1.add(lblNewLabel_2);

JLabel label_1 = new JLabel("");
label_1.setBounds(0, 69, 189, 69);
panel_1.add(label_1);

panel_1.add(btnNewButton_2);

有什么建议吗？

Answer 1

以下是如何将多个面板彼此相邻放置的示例：

public class Example extends JFrame {

    Example() {

        setLayout(new FlowLayout());
        for (int i = 0; i < 4; i++)
            add(new MyPanel());

        setDefaultCloseOperation(EXIT_ON_CLOSE);
        pack();
        setVisible(true);
    }

    class MyPanel extends JPanel {

        MyPanel() {

            setLayout(new BorderLayout());
            add(new JLabel("title", SwingConstants.CENTER), BorderLayout.PAGE_START);
            add(new JLabel("<html>WWWWWW WWWWWWW<p>WWWWWWWWW<p>RRRRRRR RRRRR RRRRRRR"));
            add(new JButton("Details"), BorderLayout.PAGE_END);
        }
    }

    public static void main(String[] args) {

        SwingUtilities.invokeLater(() -> new Example());
    }
}

您应该选择最适合您情况的布局管理器。

动态添加jpanel

1 个答案: