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java - 制作自定义 JOptionPane 对话框时遇到问题

转载 作者:行者123 更新时间:2023-12-02 12:06:18 25 4
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所以,在你说我应该做更多研究之前,我已经尝试解决这个问题大约一周了,这是我最后的手段。继续,我正在尝试制作一个带有多个按钮的对话框;一个计算器。尽管如此,我几乎不知道javax.swing的任何方法。我只知道JOptionPane方法和一点JTextField。如果可能的话,请给我一些提示或一些线索,告诉我我需要做什么,以便我自己解决。感谢您抽出时间。

最佳答案

JOptionPane 没有您正在寻找的功能。如果您想要更多按钮填充您的对话框,您需要一些其他组件。这是计算器的骨架。您必须添加逻辑:

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.border.EmptyBorder;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class Calculator extends JDialog {

private final JPanel contentPanel = new JPanel();
private JTextField textField;

public static void main(String[] args) {
try {
Calculator dialog = new Calculator();
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
dialog.setVisible(true);
} catch (Exception e) {
}
}

public Calculator() {
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent arg0) {
JOptionPane.showMessageDialog(null, "Bye");
}
});
setBounds(100, 100, 348, 234);
getContentPane().setLayout(new BorderLayout());
contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
getContentPane().add(contentPanel, BorderLayout.CENTER);
contentPanel.setLayout(null);
{
textField = new JTextField();
textField.setHorizontalAlignment(SwingConstants.RIGHT);
textField.setBounds(12, 13, 323, 19);
contentPanel.add(textField);
textField.setColumns(10);
}

JButton button_8 = new JButton("8");
button_8.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("8 pressed");
}
});
button_8.setBounds(79, 46, 55, 25);
contentPanel.add(button_8);

JButton button_9 = new JButton("9");
button_9.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("9 pressed");
}
});
button_9.setBounds(146, 46, 55, 25);
contentPanel.add(button_9);

JButton button_4 = new JButton("4");
button_4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("4 pressed");
}
});
button_4.setBounds(12, 83, 55, 25);
contentPanel.add(button_4);

JButton button_5 = new JButton("5");
button_5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("5 pressed");
}
});
button_5.setBounds(79, 83, 55, 25);
contentPanel.add(button_5);

JButton button_6 = new JButton("6");
button_6.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("6 pressed");
}
});
button_6.setBounds(146, 83, 55, 25);
contentPanel.add(button_6);

JButton button_1 = new JButton("1");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("1 pressed");
}
});
button_1.setBounds(12, 120, 55, 25);
contentPanel.add(button_1);

JButton button_2 = new JButton("2");
button_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("2 pressed");
}
});
button_2.setBounds(79, 120, 55, 25);
contentPanel.add(button_2);

JButton button_3 = new JButton("3");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("3 pressed");
}
});
button_3.setBounds(146, 120, 55, 25);
contentPanel.add(button_3);

JButton button_0 = new JButton("0");
button_0.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("0 pressed");
}
});
button_0.setBounds(12, 157, 122, 25);
contentPanel.add(button_0);

JButton button_point = new JButton(".");
button_point.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText(". pressed");
}
});
button_point.setBounds(146, 157, 55, 25);
contentPanel.add(button_point);

JButton button_divide = new JButton("/");
button_divide.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("/ pressed");
}
});
button_divide.setBounds(213, 46, 55, 25);
contentPanel.add(button_divide);

JButton button_multiply = new JButton("*");
button_multiply.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("* pressed");
}
});
button_multiply.setBounds(213, 83, 55, 25);
contentPanel.add(button_multiply);

JButton button_subtract = new JButton("-");
button_subtract.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("- pressed");
}
});
button_subtract.setBounds(213, 120, 55, 25);
contentPanel.add(button_subtract);

JButton button_sum = new JButton("+");
button_sum.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("+ pressed");
}
});
button_sum.setBounds(213, 157, 55, 25);
contentPanel.add(button_sum);

JButton button_back = new JButton("<");
button_back.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("Back pressed");
}
});
button_back.setBounds(280, 46, 55, 25);
contentPanel.add(button_back);

JButton button_clear = new JButton("C");
button_clear.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("Clear pressed");
}
});
button_clear.setBounds(280, 83, 55, 25);
contentPanel.add(button_clear);

JButton button_equals = new JButton("=");
button_equals.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("= pressed");
}
});
button_equals.setBounds(280, 120, 55, 62);
contentPanel.add(button_equals);

JButton button_7 = new JButton("7");
button_7.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText("7 pressed");
}
});
button_7.setBounds(12, 46, 55, 25);
contentPanel.add(button_7);
{
JPanel buttonPane = new JPanel();
buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
getContentPane().add(buttonPane, BorderLayout.SOUTH);
}
}
}

希望有帮助。线索:这是使用 WindowBuiler for Eclipse 制作的。你也应该尝试一下。

关于java - 制作自定义 JOptionPane 对话框时遇到问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46890105/

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