Swing GridBagLayout:将第二行的按钮居中
Swing GridBagLayout: centering a button on the second row
我有显示标签、文本字段和按钮的代码:
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Form extends JFrame implements ActionListener {
private JLabel label = new JLabel("What's your name:");
private JTextField field = new JTextField(15);
private JButton button = new JButton("Send");
public Form() {
setTitle("Name Form");
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.insets = new Insets(10, 10, 10, 1);
gbc.anchor = GridBagConstraints.LINE_END;
gbc.gridx = 0;
gbc.gridy = 0;
add(label, gbc);
gbc = new GridBagConstraints();
gbc.insets = new Insets(10, 10, 10, 10);
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridx = 1;
gbc.gridy = 0;
add(field, gbc);
gbc = new GridBagConstraints();
gbc.insets = new Insets(10, 10, 10, 10);
gbc.anchor = GridBagConstraints.LINE_END;
gbc.gridx = 0;
gbc.gridy = 1;
add(button, gbc);
}
@Override
public void actionPerformed(ActionEvent event) {
}
public static void main(String[] args) {
Form myFrame = new Form();
myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myFrame.pack();
myFrame.setVisible(true);
}
}
显示的是:
我需要像这样水平居中的按钮:
如何使用 GridBagLayout
执行此操作?我为 anchor
尝试了不同的值,但没有任何效果。
编辑:
添加 gbc.gridwidth = 2
显示:
按钮需要跨越两列,所以设置gridwidth
。
gbc.gridwidth = 2;
(顺便说一句,您不需要为每个组件创建一个新的 GridBagConstraints
。只需重复使用说的那个,只更改不同的属性即可。)
我有显示标签、文本字段和按钮的代码:
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Form extends JFrame implements ActionListener {
private JLabel label = new JLabel("What's your name:");
private JTextField field = new JTextField(15);
private JButton button = new JButton("Send");
public Form() {
setTitle("Name Form");
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.insets = new Insets(10, 10, 10, 1);
gbc.anchor = GridBagConstraints.LINE_END;
gbc.gridx = 0;
gbc.gridy = 0;
add(label, gbc);
gbc = new GridBagConstraints();
gbc.insets = new Insets(10, 10, 10, 10);
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridx = 1;
gbc.gridy = 0;
add(field, gbc);
gbc = new GridBagConstraints();
gbc.insets = new Insets(10, 10, 10, 10);
gbc.anchor = GridBagConstraints.LINE_END;
gbc.gridx = 0;
gbc.gridy = 1;
add(button, gbc);
}
@Override
public void actionPerformed(ActionEvent event) {
}
public static void main(String[] args) {
Form myFrame = new Form();
myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myFrame.pack();
myFrame.setVisible(true);
}
}
显示的是:
我需要像这样水平居中的按钮:
如何使用 GridBagLayout
执行此操作?我为 anchor
尝试了不同的值,但没有任何效果。
编辑:
添加 gbc.gridwidth = 2
显示:
按钮需要跨越两列,所以设置gridwidth
。
gbc.gridwidth = 2;
(顺便说一句,您不需要为每个组件创建一个新的 GridBagConstraints
。只需重复使用说的那个,只更改不同的属性即可。)