在 BorderLayout JFrame 中管理面板 (GridLayout) 大小

Question

所以，我正在用 Java Swing 的 GUI 制作一个 Java 战舰游戏。 我实际上设计了边框（一种非常初始的方式），现在我正在尝试制作一个尺寸合适的电路板。 考虑到板是下图中的蓝色/红色面板

一个 pack() 导致这个

全屏

但我想要更大的板。 我应该怎么办？ setPreferedSize() 似乎没有解决问题，我认为是因为 JFrame 是 BorderLayout ...

package testeborderlayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;

public class TesteBorderLayout extends JFrame {
    private JButton[][] tabuleiro1 = new JButton[10][10];
    private JButton[][] tabuleiro2 = new JButton[10][10];
    private JPanel jPanel1;
    private JPanel jPanel2;
    private JTextField jTextField1; 
    
    public TesteBorderLayout() {
        initComponents();
    }
                       
    private void initComponents() {

        jPanel1 = new JPanel();
        jPanel2 = new JPanel();
        jTextField1 = new JTextField();
        
        for(int i=0;i<10;i++){
            for(int j=0; j<10;j++){
                tabuleiro1[i][j]=new JButton();
                tabuleiro2[i][j]=new JButton();
            }
        }
        
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBackground(new Color(255, 102, 102));
        jPanel1.setLayout(new GridLayout(10,10));
        getContentPane().add(jPanel1, BorderLayout.PAGE_START);

        jPanel2.setBackground(new Color(51, 102, 255));
        jPanel2.setLayout(new GridLayout(10,10));
        getContentPane().add(jPanel2, BorderLayout.PAGE_END);
        
        for(int i=0;i<10;i++){
            for(int j=0;j<10;j++){
                jPanel1.add(tabuleiro1[i][j]);
                jPanel2.add(tabuleiro2[i][j]);
            }
        }
        
        jTextField1.setBackground(new Color(255,255,255));
        jTextField1.setText("Comandos para o usuário");
        getContentPane().add(jTextField1, BorderLayout.CENTER);
        setTitle("Batalha Naval");
        pack();
    }                

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

Answer 1

BorderLayout.PAGE_START/END将使用组件preferredSize 。 相反，我会使用GridBagLayout ，例如...

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class Main {

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

    public Main() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                JFrame frame = new TesteBorderLayout();
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TesteBorderLayout extends JFrame {
        private JButton[][] tabuleiro1 = new JButton[10][10];
        private JButton[][] tabuleiro2 = new JButton[10][10];
        private JPanel jPanel1;
        private JPanel jPanel2;
        private JTextField jTextField1;

        public TesteBorderLayout() {
            initComponents();
        }

        private void initComponents() {

            jPanel1 = new JPanel();
            jPanel2 = new JPanel();
            jTextField1 = new JTextField();

            for (int i = 0; i < 10; i++) {
                for (int j = 0; j < 10; j++) {
                    tabuleiro1[i][j] = new JButton();
                    tabuleiro2[i][j] = new JButton();
                }
            }

            setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

            JPanel contentPane = new JPanel(new GridBagLayout());
            GridBagConstraints gbc = new GridBagConstraints();
            gbc.gridx = 0;
            gbc.gridy = 0;
            gbc.weightx = 1;
            gbc.weighty = 1;
            gbc.fill = GridBagConstraints.BOTH;

            jPanel1.setBackground(new Color(255, 102, 102));
            jPanel1.setLayout(new GridLayout(10, 10));
            contentPane.add(jPanel1, gbc);

            jPanel2.setBackground(new Color(51, 102, 255));
            jPanel2.setLayout(new GridLayout(10, 10));
            gbc.gridy = 2;
            contentPane.add(jPanel2, gbc);

            for (int i = 0; i < 10; i++) {
                for (int j = 0; j < 10; j++) {
                    jPanel1.add(tabuleiro1[i][j]);
                    jPanel2.add(tabuleiro2[i][j]);
                }
            }

            gbc.gridy = 1;
            gbc.fill = GridBagConstraints.HORIZONTAL;
            gbc.weighty = 0;

            jTextField1.setBackground(new Color(255, 255, 255));
            jTextField1.setText("Comandos para o usuário");
            contentPane.add(jTextField1, gbc);

            add(contentPane);
            setTitle("Batalha Naval");
            pack();
        }
    }    
}

有关详细信息，请参阅如何使用 GridBagLayout

Answer 2

您正在使用您需要使其可见的 contentPange。 pack() 也总是使可能的最小尺寸。 您应该用以下两行替换包。

    this.setSize(800, 800);
    getContentPane().setVisible(true);

然后你可以看到你想如何调整各个组件的大小。 （面板、按钮等）