java - 在 Swing 面板上排列 Swing 组件

Question

我是 Swing 的新手，但有点难以实现我想要做的事情。我想构建一个如下所示的屏幕:

我不确定哪种布局最适合这种屏幕。我尝试使用 BorderLayout 但它永远不会正确。我在右下角找到了按钮，但事实证明中间的组件非常具有挑战性。我知道如何将组件添加到面板上，但我正在努力的领域是如何对齐它们。有时，如果我在带有 BORDERLAYOUT 的面板上添加文本字段，它会占用整个面板的全部空间，这是我不想要的。

我设法让它几乎可以使用 AbsoluteLayout 工作，但我怀疑如果我想让屏幕流畅，那不是最好的选择。

setBounds(100, 100, 775, 599);
getContentPane().setLayout(new BorderLayout());
contentPanel.setBackground(SystemColor.control);
contentPanel.setForeground(Color.RED);
contentPanel.setBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null));
getContentPane().add(contentPanel, BorderLayout.CENTER);
contentPanel.setLayout(new BorderLayout(0, 0));
{
    JPanel topHeadersPanel = new JPanel();
    contentPanel.add(topHeadersPanel, BorderLayout.NORTH);
    topHeadersPanel.setLayout(new BorderLayout(0, 0));
    {
        JLabel lblSetSourceRecord = new JLabel("Source customer record:");
        lblSetSourceRecord.setFont(new Font("Tahoma", Font.BOLD, 12));
        topHeadersPanel.add(lblSetSourceRecord, BorderLayout.WEST);
    }
    {
        JLabel lblSetDestinationRecord = new JLabel("Destination customer record:");
        lblSetDestinationRecord.setFont(new Font("Tahoma", Font.BOLD, 12));
        topHeadersPanel.add(lblSetDestinationRecord, BorderLayout.EAST);
    }

    {
        JLabel lblSetDestinationRecord = new JLabel("Source customer:");
        lblSetDestinationRecord.setFont(new Font("Tahoma", Font.BOLD, 12));
        topHeadersPanel.add(lblSetDestinationRecord, BorderLayout.SOUTH);
    }
}
{
    JPanel buttonPane = new JPanel();
    buttonPane.setBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null));
    buttonPane.setLayout(new FlowLayout(FlowLayout.CENTER));
    getContentPane().add(buttonPane, BorderLayout.SOUTH);
    {
        JPanel panel = new JPanel();
        buttonPane.add(panel);
    }
    {
        JButton okButton = new JButton("OK");
        okButton.setActionCommand("OK");
        buttonPane.add(okButton);
        getRootPane().setDefaultButton(okButton);
    }
    {
        JButton cancelButton = new JButton("Cancel");
        cancelButton.setActionCommand("Cancel");
        buttonPane.add(cancelButton);
    }

Answer 1

尝试在 GridLayout 中制作 1 行和 2 列的上部，将其添加到 BorderLayout 中作为 CENTER 并将按钮作为 BorderLayout.BOTTOM。在上部，使用两个面板，一个用于左侧，一个用于右侧。

这里有一些代码来展示这一点(我真的无法复制/粘贴你的例子):

public class MW extends JFrame {

    public static void main(String[] args) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                createAndShowUI();
            }
        });
    }

    private static void createAndShowUI() {
        MW x = new MW();

        JPanel mainPanel = new JPanel();
        mainPanel.setLayout(new GridLayout(1, 2));

        JPanel leftPanel = new JPanel();
        JLabel srcLabel = new JLabel("Source record:");
        leftPanel.add(srcLabel);
        JPanel rightPanel = new JPanel();
        JLabel dstLabel = new JLabel("Destination record:");
        rightPanel.add(dstLabel);

        mainPanel.add(leftPanel);
        mainPanel.add(rightPanel);

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
        JButton okButton = new JButton("OK");
        buttonPanel.add(okButton);
        JButton cancelButton = new JButton("Cancel");
        buttonPanel.add(cancelButton);

        x.setSize(400, 400);
        x.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        x.add(mainPanel, BorderLayout.CENTER);
        x.add(buttonPanel, BorderLayout.PAGE_END);
        x.setLocationRelativeTo(null);
        x.setVisible(true);
    }
}