java - 如何修复 JFrame 程序的布局

Question

我只是想知道是否有人知道如何修复我的代码，以便所有代码都出现在一列中，而不是它一直给我的两列，我希望它只显示一列，并且有一个漂亮而紧凑的GUI，但每次我编译和运行时，该按钮都会从其余文本框和标签中伸出!任何额外的帮助也非常感谢。谢谢!

代码:

package time;

import java.awt.BorderLayout;


public class Display extends JPanel{

    private static final long serialVersionUID = 1L;

    Basic out = new Basic();

    public static int hrsIn;
    public static int daysIn;
    public static int monthsIn;
    public static int yearsIn;
    public static int timeAdd;
    public static JButton enter;
    public static JLabel currentTime, nextTime, hoursUntil;
    public static JTextField dayCurrent, hourCurrent, monthCurrent, yearCurrent,
                                dayNext, hourNext, monthNext, yearNext;
    public static JFrame frame;
    public static JPanel newTimePanel;

    public Display(){
        super(new GridLayout(3,1));

        enter = new JButton("Okay");
        dayCurrent = new JTextField("Day", 2);
        hourCurrent = new JTextField("Hour", 2);
        monthCurrent = new JTextField("Month", 2);
        yearCurrent = new JTextField("Year", 4); 
        dayNext = new JTextField("Day", 2);
        hourNext = new JTextField("Hour", 2);
        monthNext = new JTextField("Month", 2);
        yearNext = new JTextField("Year", 4); 
        currentTime = new JLabel("Current Time:", JLabel.RIGHT);
        nextTime = new JLabel("Next Time:", JLabel.RIGHT);
        hoursUntil = new JLabel("xxxx", JLabel.RIGHT);

        JPanel button = new JPanel(new GridLayout(0,1));
            button.add(enter);

        JPanel currentPane = new JPanel(new GridLayout(1,0));
            currentPane.add(dayCurrent);
            currentPane.add(monthCurrent);
            currentPane.add(yearCurrent);
            currentPane.add(hourCurrent);

        JPanel nextPane = new JPanel(new GridLayout(1,0));
            nextPane.add(dayNext);
            nextPane.add(monthNext);
            nextPane.add(yearNext);
            nextPane.add(hourNext);

        JPanel newTimePanel = new JPanel(new FlowLayout());
            newTimePanel.add(hoursUntil);

        JPanel labelsCurrent = new JPanel(new GridLayout(1,0));
            labelsCurrent.add(currentTime);
            labelsCurrent.add(currentPane);

        JPanel labelsNext = new JPanel(new GridLayout(1,0));
            labelsNext.add(nextTime);
            labelsNext.add(nextPane);

        setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
            add(labelsCurrent, BorderLayout.CENTER);
            add(labelsNext, BorderLayout.CENTER);
            add(button, BorderLayout.AFTER_LAST_LINE);
    }

    private static void createAndShowGUI(){
        frame = new JFrame("Clock Adder");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);
        frame.add(new Display());
        frame.pack();
        frame.setVisible(true);

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

        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run(){
                createAndShowGUI();
                }
            }
        );
    }   
}

Answer 1

不要使用 GridLayout，它的作用完全符合其设计目的，相反，请尝试使用 GridBagLayout，例如...

替换

super(new GridLayout(3,1));

与...

super(new GridBagLayout());

然后替换...

add(labelsCurrent, BorderLayout.CENTER);
add(labelsNext, BorderLayout.CENTER);
add(button, BorderLayout.AFTER_LAST_LINE);

与...

GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(labelsCurrent, gbc);
add(labelsNext, gbc);
add(button, gbc);

看看How to Use GridBagLayout了解更多详情...

您可能还想查看How to Use Spinners

已更新

使用GridBagLayout，没有理由在这里尝试使用复合布局...

        setLayout(new GridBagLayout());

        dayCurrent = new JTextField(3);
        hourCurrent = new JTextField(3);
        monthCurrent = new JTextField(3);
        yearCurrent = new JTextField(3);
        dayNext = new JTextField(3);
        hourNext = new JTextField(3);
        monthNext = new JTextField(3);
        yearNext = new JTextField(3);
        enter = new JButton("Ok");

        GridBagConstraints gbc = new GridBagConstraints();
        gbc.gridx = 1;
        gbc.gridy = 0;
        gbc.insets = new Insets(1, 1, 1, 1);

        add(new JLabel("Day"), gbc);
        gbc.gridx++;
        add(new JLabel("Month"), gbc);
        gbc.gridx++;
        add(new JLabel("Year"), gbc);
        gbc.gridx++;
        add(new JLabel("Hour"), gbc);

        gbc.gridx = 0;
        gbc.gridy = 1;

        add(new JLabel("Current Time:"), gbc);
        gbc.gridx++;
        add(dayCurrent, gbc);
        gbc.gridx++;
        add(monthCurrent, gbc);
        gbc.gridx++;
        add(yearCurrent, gbc);
        gbc.gridx++;
        add(hourCurrent, gbc);

        gbc.gridx = 0;
        gbc.gridy = 2;

        add(new JLabel("Next Time:"), gbc);
        gbc.gridx++;
        add(dayNext, gbc);
        gbc.gridx++;
        add(monthNext, gbc);
        gbc.gridx++;
        add(yearNext, gbc);
        gbc.gridx++;
        add(hourNext, gbc);

        gbc.gridy++;
        gbc.gridx = 0;
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        add(enter, gbc);