我需要建立一个类似这个图像的屏幕。我有一个主面板,在该面板中我需要添加多个列2个垂直列和3个水平列。这列是Jpanels。我尝试使用GridLayout,但我没有成功。
答案 0 :(得分:4)
单个布局管理器可以完成您想要的所有操作。您希望在可能/需要的地方开始使用复合布局管理器。
此示例同时使用GridLayout
和GridBagLayout
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.EmptyBorder;
public class BadLayout21 {
public static void main(String[] args) {
new BadLayout21();
}
public BadLayout21() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setBorder(new EmptyBorder(10, 10, 10, 10));
setLayout(new GridBagLayout());
JPanel leftPane = new JPanel(new GridLayout(2, 0, 0, 4));
leftPane.add(createPane(Color.RED));
leftPane.add(createPane(Color.RED));
JPanel leftMiddlePanel = createPane(Color.BLUE);
JPanel rightMiddlePanel = createPane(Color.BLUE);
JPanel rightPane = new JPanel(new GridLayout(2, 0, 0, 4));
rightPane.add(createPane(Color.GREEN));
rightPane.add(createPane(Color.GREEN));
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.NORTH;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.insets = new Insets(20, 20, 0, 0);
add(leftPane, gbc);
gbc.gridx = 3;
gbc.anchor = GridBagConstraints.NORTH;
gbc.insets = new Insets(20, 0, 0, 20);
add(rightPane, gbc);
gbc.weightx = 0;
gbc.gridx = 1;
gbc.weighty = 1;
gbc.fill = GridBagConstraints.VERTICAL;
gbc.anchor = GridBagConstraints.NORTH;
gbc.insets = new Insets(0, 0, 0, 10);
add(leftMiddlePanel, gbc);
gbc.gridx = 2;
gbc.insets = new Insets(0, 10, 0, 0);
add(rightMiddlePanel, gbc);
}
protected JPanel createPane(Color color) {
JPanel panel = new JPanel();
panel.setPreferredSize(new Dimension(25, 25));
panel.setBackground(color);
return panel;
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
}
答案 1 :(得分:1)
我认为将所有面板直接放在一个大面板中会很困难。可以有多种解决方案。就像将主面板分成四个单独(垂直)面板一样,并将最终面板添加到这四个子面板中。或者像怪物一样,从边框布局开始,首先创建一个左子面板,中心子面板和右子面板,每个面板都有自己的布局管理器。在这些子面板中,您可以放置最终面板。
虽然目前我的确切目的或目标有点模糊,但我希望你能用我的建议。