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所以我尝试创建一系列单选按钮和复选框,显示如下:
Radio Button
Check Box
Radio Button
Check Box
Radio Button
但是,我仍在学习java过程中,我想知道是否有人可以解决这个问题。目前按钮和框显示在正确的位置,但是由于某种原因第一个单选按钮(“Times”)没有显示。如果您能描述原因和可能的解决方案,那就太好了。
谢谢
更新的代码:
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
public class Question2 {
public static void main(String[] args) {
MyFrame f = new MyFrame("Font Chooser");
f.init();
}
}
class MyFrame extends JFrame {
MyFrame(String title) {
super(title);
}
private JPanel mainPanel;
private GridBagConstraints gbc = new GridBagConstraints();
private GridBagLayout gbLayout = new GridBagLayout();
void init() {
mainPanel = new JPanel();
mainPanel.setLayout(gbLayout);
mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 20, 10, 20));
this.setContentPane(mainPanel);
gbc.gridx = 0;
gbc.gridy = 1;
JCheckBox cb = new JCheckBox("Bold");
gbLayout.setConstraints(cb, gbc);
mainPanel.add(cb);
gbc.gridy = 3;
gbLayout.setConstraints(cb, gbc);
cb = new JCheckBox("Italic");
mainPanel.add(cb);
gbc.gridx = 1;
gbc.gridy = 0;
JRadioButton rb = new JRadioButton("Times");
gbLayout.setConstraints(rb, gbc);
mainPanel.add(rb, gbc);
gbc.gridy = 2;
gbLayout.setConstraints(rb, gbc);
rb = new JRadioButton("Helvatica");
mainPanel.add(rb, gbc);
gbc.gridy = 4;
gbLayout.setConstraints(rb, gbc);
rb = new JRadioButton("Courier");
mainPanel.add(rb, gbc);
this.pack();
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
}
最佳答案
问题来了,你说每个高度是 3,但实际上每个单元格是 1。
cRadioButton.gridheight = 3; // change this to 1
这是完整的源代码,我确实根据其他答案进行了一些建议的更改,因为在某些时候您会想要做一些不同的事情(每种类型的按钮都有不同的操作监听器实现)。
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
public class MyFrame1 extends JFrame {
MyFrame1(String title) {
super(title);
}
private JPanel mainPanel;
private GridBagConstraints gbc = new GridBagConstraints();
private GridBagLayout gbLayout = new GridBagLayout();
void init() {
mainPanel = new JPanel();
mainPanel.setLayout(gbLayout);
mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 20, 10, 20));
this.setContentPane(mainPanel);
gbc.gridx = 0;
gbc.gridy = 1;
JCheckBox italic = new JCheckBox("Italic");
gbLayout.setConstraints(italic, gbc);
mainPanel.add(italic);
JCheckBox bold = new JCheckBox("Bold");
gbc.gridy = 3;
gbLayout.setConstraints(bold, gbc);
mainPanel.add(bold);
gbc.gridx = 1;
gbc.gridy = 0;
JRadioButton times = new JRadioButton("Times");
gbLayout.setConstraints(times, gbc);
mainPanel.add(times, gbc);
gbc.gridy = 2;
JRadioButton helv = new JRadioButton("Helvatica");
gbLayout.setConstraints(helv, gbc);
mainPanel.add(helv, gbc);
gbc.gridy = 4;
JRadioButton courier = new JRadioButton("Courier");
gbLayout.setConstraints(courier, gbc);
mainPanel.add(courier, gbc);
this.pack();
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
public static void main(String[] args) {
MyFrame1 f = new MyFrame1("Font Chooser");
f.init();
}
}
关于Java GUI,尝试定位单选按钮和复选框,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22076148/
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