使用background将其他组件添加到JFrame

时间:2010-06-02 18:06:14

标签: java swing

我想在我的JFrame中添加背景图像,但是当我使用下面的代码执行此操作时,我无法添加其他元素,如JLabel或JTextField。

ImageIcon icon = new ImageIcon("src/images/back.jpg");
backImage = icon.getImage();
BackgroundImagePanel contentPane = new BackgroundImagePanel();
contentPane.setBackgroundImage(backImage);
this.setContentPane(contentPane);

如果有另一种方法可以将JTabbedPane添加到具有背景的JFrame中,您能告诉我吗?

谢谢。

2 个答案:

答案 0 :(得分:4)

喜欢这个吗?

附录:“通常你会首先调用super.paintComponent(g),但由于图像将覆盖整个背景,因此无需执行此操作。” - camickr

附录:另见opacity property

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class Imager {

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                JFrame frame = new JFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new ImagePanel("image.jpg"));
                frame.pack();
                frame.setVisible(true);
            }
        });
    }

    private static class ImagePanel extends JPanel {

        BufferedImage img;

        ImagePanel(String name) {
            this.setToolTipText(name);
            this.add(new JLabel(name));
            try {
                img = ImageIO.read(new File(name));
                this.setPreferredSize(new Dimension(
                    img.getWidth(), img.getHeight()));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        @Override
        protected void paintComponent(Graphics g) {
            // super.paintComponent(g);
            g.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), null);
        }
    }
}

答案 1 :(得分:2)

尝试添加此内容:

//4. Size the frame.
this.pack();

//5. Show it.
this.setVisible(true);

取自How to Make Frames