如何将图像绘制到JPanel或JFrame？

java swing jframe jpanel bufferedimage

2022-09-03 00:01:48

我如何将图像绘制到JPanel或JFrame，我已经阅读了oracle的教程，但我似乎无法正确理解。我需要将图像“”显示在一组特定的坐标上。这是我到目前为止所拥有的。BeachRoad.png

public class Level1  extends JFrame implements ActionListener {

static JLayeredPane EverythingButPlayer;
static Level1 l1;

public Level1() {
    EverythingButPlayer = new JLayeredPane();

    BufferedImage img = null;
    try {
        img = ImageIO.read(new File("BeachRoad.png"));
    } catch (IOException e) {
    }
    Graphics g = img.getGraphics();
    g.drawImage(img,0, 0, EverythingButPlayer);


    this.add(EverythingButPlayer);
}

在主要（），

l1 = new Level1();
l1.setTitle("poop");
l1.setSize(1920, 1080);
l1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
l1.setVisible(true);

提前致谢！

答案 1

试试这个：

package com.sandbox;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class SwingSandbox {

    public static void main(String[] args) throws IOException {
        JFrame frame = buildFrame();

        final BufferedImage image = ImageIO.read(new File("C:\\Projects\\MavenSandbox\\src\\main\\resources\\img.jpg"));

        JPanel pane = new JPanel() {
            @Override
            protected void paintComponent(Graphics g) {
                super.paintComponent(g);
                g.drawImage(image, 0, 0, null);
            }
        };


        frame.add(pane);
    }


    private static JFrame buildFrame() {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setSize(200, 200);
        frame.setVisible(true);
        return frame;
    }


}

答案 2

有很多方法，但我总是覆盖a并使用paint(Graphics g)JComponentg.drawImage(...)

编辑：我正在制作一个样本，但丹尼尔·卡普兰（Daniel Kaplan）做得非常完美，看看他的答案:)