Swing GridLayout類

GridLayout類將組件排列在矩形網格中。

類聲明

以下是java.awt.GridLayout類的聲明 -

public class GridLayout
   extends Object
      implements LayoutManager, Serializable

類構造函數

類方法

方法繼承

該類繼承以下類中的方法 -

• java.lang.Object

GridLayout示例

使用編輯器創建以下Java程式：GridLayoutDemo.java

package com.zaixian.layout;

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.*;

public class GridLayoutDemo {
    private JFrame mainFrame;
    private JLabel headerLabel;
    private JLabel statusLabel;
    private JPanel controlPanel;
    private JLabel msglabel;

    public GridLayoutDemo() {
        prepareGUI();
    }

    public static void main(String[] args) {
        GridLayoutDemo swingLayoutDemo = new GridLayoutDemo();
        swingLayoutDemo.showGridLayoutDemo();
    }

    private void prepareGUI() {
        mainFrame = new JFrame("Java SWING GridLayoutDemo(xuhuhu.com)");
        mainFrame.setSize(400, 400);
        mainFrame.setLayout(new GridLayout(3, 1));

        headerLabel = new JLabel("", JLabel.CENTER);
        statusLabel = new JLabel("", JLabel.CENTER);
        statusLabel.setSize(350, 100);

        mainFrame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent windowEvent) {
                System.exit(0);
            }
        });
        controlPanel = new JPanel();
        controlPanel.setLayout(new FlowLayout());

        mainFrame.add(headerLabel);
        mainFrame.add(controlPanel);
        mainFrame.add(statusLabel);
        mainFrame.setVisible(true);
    }

    private void showGridLayoutDemo() {
        headerLabel.setText("Layout in action: GridLayout");

        JPanel panel = new JPanel();
        panel.setBackground(Color.blue);
        panel.setSize(300, 300);
        GridLayout layout = new GridLayout(0, 3);
        layout.setHgap(10);
        layout.setVgap(10);

        panel.setLayout(layout);
        panel.add(new JButton("按鈕-A"));
        panel.add(new JButton("按鈕-B"));
        panel.add(new JButton("按鈕-C"));
        panel.add(new JButton("按鈕-D"));
        panel.add(new JButton("按鈕-E"));
        controlPanel.add(panel);
        mainFrame.setVisible(true);
    }
}

執行上面示例代碼，得到以下結果：