从JOptionPane中删除图标

Question

如何从JOptionPane删除图标？

ImageIcon icon = new ImageIcon(image);
JLabel label = new JLabel(icon);
int result = JOptionPane.showConfirmDialog((Component) null, label, "ScreenPreview", JOptionPane.OK_CANCEL_OPTION);

Answer 1

您可以直接指定邮件的外观。

您的代码将采用默认代码，而此代码将使用缺少图标的“PLAIN_MESSAGE”样式。组件的行为保持不变。

JOptionPane.showConfirmDialog(null, label, "ScreenPreview", JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);

更多信息：http://docs.oracle.com/javase/6/docs/api/javax/swing/JOptionPane.html

Answer 2

使用下面的透明图标（与黑色'splash image'相对）相当容易。虽然请注意，虽然选项窗格在显示方式方面提供了一些“摆动空间”，但请更改一些内容，而使用JDialog变得更加容易。

import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;

class IconFree {

    public static void main(String[] args) {
        Runnable r = new Runnable() {

            @Override
            public void run() {
                // A transparent image is invisible by default.
                Image image = new BufferedImage(
                        1, 1, BufferedImage.TYPE_INT_ARGB);
                JPanel gui = new JPanel(new BorderLayout());
                // ..while an RGB image is black by default.
                JLabel clouds = new JLabel(new ImageIcon(new BufferedImage(
                        250, 100, BufferedImage.TYPE_INT_RGB)));
                gui.add(clouds);

                JOptionPane.showConfirmDialog(null, gui, "Title",
                        JOptionPane.OK_CANCEL_OPTION,
                        JOptionPane.QUESTION_MESSAGE,
                        new ImageIcon(image));
            }
        };
        // Swing GUIs should be created and updated on the EDT
        // http://docs.oracle.com/javase/tutorial/uiswing/concurrency/initial.html
        SwingUtilities.invokeLater(r);
    }
}

Answer 3

用-1代替JOptionPane.QUESTION_MESSAGE。