Java，如何将对话框弹出为仅图像？

Question

我正试图找到一种方法将JDialog的所有内容替换为简单的图像。 这是我正在处理的项目的大约页面，我希望当用户点击“关于”部分时，一个图像以JDialog的样式弹出（并在焦点丢失时消失）。 示例： http ： //www.tecmint.com/wp-content/uploads/2012/08/About-Skype.jpg Skype只显示他们创建的图像作为“关于”页面。 如何在Java（swing）中创建“图像对话框”？

Answer 1

如何在Java（swing）中创建“图像对话框”？

将未修饰的JDialog与包含ImageIcon的JLabel一起使用：

JDialog dialog = new JDialog();
dialog.setUndecorated(true);
JLabel label = new JLabel( new ImageIcon(...) );
dialog.add( label );
dialog.pack();
dialog.setVisible(true);

Answer 2

BufferedImage image = ImageIO.read(new File("myfile.png"));
JLabel picLabel = new JLabel(new ImageIcon(image));
JOptionPane.showMessageDialog(null, picLabel, "About", JOptionPane.PLAIN_MESSAGE, null);

Answer 3

在这里，我为您注释了代码

import javax.swing.JOptionPane; //imports
import javax.swing.JLabel;
import javax.swing.JFrame;
import javax.swing.ImageIcon;
import java.awt.Toolkit;
import java.awt.Dimension;

public class img{

  public static void main(String[] args){

    JFrame f = new JFrame(); //creates jframe f

    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); //this is your screen size

    f.setUndecorated(true); //removes the surrounding border

    ImageIcon image = new ImageIcon(diceGame.class.getResource("image.png")); //imports the image

    JLabel lbl = new JLabel(image); //puts the image into a jlabel

    f.getContentPane().add(lbl); //puts label inside the jframe

    f.setSize(image.getIconWidth(), image.getIconHeight()); //gets h and w of image and sets jframe to the size

    int x = (screenSize.width - f.getSize().width)/2; //These two lines are the dimensions
    int y = (screenSize.height - f.getSize().height)/2;//of the center of the screen

    f.setLocation(x, y); //sets the location of the jframe
    f.setVisible(true); //makes the jframe visible


  }
}

[[OLD]]以下代码可以满足您的需求。

import javax.swing.JOptionPane;
import javax.swing.JLabel;
import javax.swing.ImageIcon;

public class img{

  public static void main(String[] args){

    JLabel lbl = new JLabel(new ImageIcon(diceGame.class.getResource("image.png")));
    JOptionPane.showMessageDialog(null, lbl, "ImageDialog", 
                                 JOptionPane.PLAIN_MESSAGE, null);



  }
}