Java JOptionPane传递自定义按钮

我正在尝试获取通过传递给JOptionPane的自定义按钮返回的值。但是，我传递的按钮根本不返回值。只有当按下退出按钮时，才会返回值-1。我需要这个，因为我正在更改启用或禁用按钮的属性。我假设我需要按钮以某种方式将一些信息返回到JOptionPane。有什么想法吗

    JButton button1= new JButton("Button 1");
    JButton button2= new JButton("Button 2");

    button1.setEnabled(false);

    int value = JOptionPane.showOptionDialog(null, "Heres a test message", "Test", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1);
    JOptionPane.showMessageDialog(null, "You entered " + value);

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

注意：这与我之前的问题有关-

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

我试着像你说的那样设置按钮的值，但它们从来没有返回OK或CANCEL

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

---

无论何时检查按钮的值，它们都不会返回我设置的值

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

---

以上，我总是得到按钮2弹出窗口。无论如何，

如果你需要这个复杂的行为，考虑创建你自己的j对话框，然后以一种模态的方式显示它。

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

如果必须使用JOptionPane，可以通过提取其JDialog并递归迭代其组件来实现，直到找到要禁用的组件并禁用它：

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

import java.awt.Component;
import java.awt.Container;
import javax.swing.*;

public class Foo2 {
   public static void main(String[] args) {
      SwingUtilities.invokeLater(new Runnable() {
         public void run() {
            doRun();
         }
      });
   }

   public static void doRun() {
      String[] options = {"Button 1", "Button 2", "Button 3"};

      JOptionPane myOptionPane = new JOptionPane("Heres a test message",
            JOptionPane.QUESTION_MESSAGE, JOptionPane.YES_NO_OPTION, 
            null, options, options[2]);
      JDialog myDialog = myOptionPane.createDialog(null, "My Test");
      myDialog.setModal(true);

      inactivateOption(myDialog, options[1]);

      myDialog.setVisible(true);
      Object result = myOptionPane.getValue();
      // Note: result might be null if the option is cancelled
      System.out.println("result: " + result);

      System.exit(0); // to stop Swing event thread
   }

   private static void inactivateOption(Container container, String text) {
      Component[] comps = container.getComponents();
      for (Component comp : comps) {
         if (comp instanceof AbstractButton) {
            AbstractButton btn = (AbstractButton) comp;
            if (btn.getActionCommand().equals(text)) {
               btn.setEnabled(false);
               return;
            }
         } else if (comp instanceof Container) {
            inactivateOption((Container) comp, text);
         }
      }

   }
}

---

但是对于我自己，我只需要创建一个JDialog。

您不必显式定义按钮

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

int result = JOptionPane.showOptionDialog(this, "Are you sure you want to...?", "Title", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, new String[] { "Yes", "No" }, JOptionPane.NO_OPTION);
if (result == JOptionPane.YES_OPTION) {
  ...
}

---

在我链接到前面问题的示例中，按钮使用

JOptionPane#setValue

方法设置返回值。这允许您继续正常使用API，同时为您提供您的后续定制

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

            final JButton okay = new JButton("Ok");
            okay.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    JOptionPane pane = getOptionPane((JComponent)e.getSource());
                    // set the value of the option pane
                    pane.setValue(JOptionPane.OK_OPTION);
                }
            });

仔细看看

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

已更新

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

我已经回顾了代码并更正了

actionPerformed

方法，使其能够返回有效值

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

final JButton okay = new JButton("Ok");
okay.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        JOptionPane pane = getOptionPane((JComponent)e.getSource());
        pane.setValue(okay);
    }
});
okay.setEnabled(false);
final JButton cancel = new JButton("Cancel");
cancel.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        JOptionPane pane = getOptionPane((JComponent)e.getSource());
        pane.setValue(cancel);
    }
});

选项

数组中值的索引返回的值（最后一个参数）

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

所以，举个例子

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }

int value = JOptionPane.showOptionDialog(
     null, 
     field, 
     "Get", 
     JOptionPane.YES_NO_OPTION, 
     JOptionPane.QUESTION_MESSAGE, 
     null, 
     new Object[]{okay, cancel}, 
     okay);

---

如果用户单击OK按钮，返回值将为

0

，或者如果用户选择cancel按钮，返回值将为

1

此问题与OPs上一个问题相关，因此他们试图传递自己的按钮的原因是，我刚刚认识到问题的风格；）请参阅编辑以回答。每当检查按钮的值时，它们都不会返回我设置的值。现在已在原始问题中发布。我现在不在电脑旁，有机会时我会看一看

    JButton button1= new JButton("Button1");
    JButton button2= new JButton("Button2");

    button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.OK_OPTION);
            }
        });

    button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane pane = getOptionPane((JComponent)e.getSource());
                // set the value of the option pane
                pane.setValue(JOptionPane.CANCEL_OPTION);
            }
        });

      if (JOptionPane.showOptionDialog(null, "Pick a button", "Pick", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[]{button1, button2}, button1) == JOptionPane.OK_OPTION) {
           JOptionPane.showMessageDialog(null, "Button1");
      }
      else{
           JOptionPane.showMessageDialog(null, "Button2");
      }