JOptionPane自定义输入

发布于 2024-08-18 03:29:01 字数 798 浏览 2 评论 0原文

我想要做的就是拥有一个带有 JTextArea 而不是 JTextField 的 JOptionPane inputDialog。
我尝试将 JTextArea 放入 Message 参数中，如下所示，

Object[] inputText = new Object[]{new JLabel("Enter Graph Information"),
                                  newJTextArea("",20,10)};
graphInfo=(String)JOptionPane.showInputDialog(null,
                                              inputText,
                                              "Create Graph",
                                              JOptionPane.PLAIN_MESSAGE,
                                              null,
                                              null,
                                              "");

但它的底部仍然有文本字段，我无法从 JTextArea 获取文本。有没有办法删除原始文本字段并从 jtextarea 获取文本或将文本字段完全替换为文本区域？如果可能的话，我试图避免创建自定义对话框，这“看起来”像是应该很容易做到的事情？

原文

All I want to do is have a JOptionPane inputDialog with a JTextArea instead of a JTextField.
I tried putting the JTextArea inside of the Message parameter like so

Object[] inputText = new Object[]{new JLabel("Enter Graph Information"),
                                  newJTextArea("",20,10)};
graphInfo=(String)JOptionPane.showInputDialog(null,
                                              inputText,
                                              "Create Graph",
                                              JOptionPane.PLAIN_MESSAGE,
                                              null,
                                              null,
                                              "");

But it still has the text field at the bottom and I cannot get the text from the JTextArea.
Is there any way to either remove the original text field and get the text from the jtextarea or replace the text field with the text area completely? I'm trying to avoid having to make a custom dialog if possible and this "seems" like something that should be easy to do?

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一紙繁鸢 2024-08-25 03:29:01

你的做法是正确的；您只需使用 showConfirmDialog 而不是 showMessageDialog，它允许您传递任何 Component 作为“消息”并将其显示在 <代码>JDialog。如果用户单击“确定”，您就可以捕获 JTextArea 的内容；例如，

int okCxl = JOptionPane.showConfirmDialog(SwingUtilities.getWindowAncestor(this),
                                    textArea,
                                    "Enter Data",
                                    JOptionPane.OK_CANCEL_OPTION)

if (okCxl == JOptionPane.OK_OPTION) {
  String text = textArea.getText();
  // Process text.
}

如果您想与 JTextArea 一起显示 JLabel，您可以创建并传入包含两个 Component 的 JPanel；例如

JTextArea textArea = ...
JPanel pnl = new JPanel(new BorderLayout());

pnl.add(new JLabel("Please enter some data:"), BorderLayout.NORTH);
pnl.add(textArea, BorderLayout.CENTER);

JOptionPane.show...

You're on the right lines; you just need to use showConfirmDialog instead of showMessageDialog, which allows you to pass any Component as your "message" and have it displayed within the JDialog. You can then capture the contents of the JTextArea if the user clicks OK; e.g.

int okCxl = JOptionPane.showConfirmDialog(SwingUtilities.getWindowAncestor(this),
                                    textArea,
                                    "Enter Data",
                                    JOptionPane.OK_CANCEL_OPTION)

if (okCxl == JOptionPane.OK_OPTION) {
  String text = textArea.getText();
  // Process text.
}

If you want to show a JLabel in conjunction with your JTextArea you can create and pass in a JPanel containing both Components; e.g.

JTextArea textArea = ...
JPanel pnl = new JPanel(new BorderLayout());

pnl.add(new JLabel("Please enter some data:"), BorderLayout.NORTH);
pnl.add(textArea, BorderLayout.CENTER);

JOptionPane.show...

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