为什么我的图片没有加载到JFrame上? [英] Why isn't my image loading on the JFrame?
问题描述
伙计为什么我的图像没有加载到我的JFrame上?
BTW我在我的mac上使用eclipse。
代码董事会:
package ourgame;
import java.awt。*;
import java.awt.event。*;
import javax.swing。*;
public class Board extends JPanel implements ActionListener {
Dude p;
public 图片img;
定时器时间;
public Board(){
p = new Dude() ;
addKeyListener( new AL());
setFocusable(true);
ImageIcon i = new ImageIcon( C :/character.png跨度>);
img = i.getImage();
time = new 计时器( 5 , this 跨度>);
time.start();
}
public void actionPerformed(ActionEvent e){
p.move();
repaint();
}
public void paint(Graphics g){
super .paint(g);
Graphics2D g2d =(Graphics2D)g;
g2d.drawImage(img, 0 , 0 ,null);
g2d.drawImage(p.getImage(),p.getX(),p.getY(),null);
}
private class AL extends KeyAdapter {
public void keyReleased(KeyEvent e) {
p.keyReleased(e);
}
public void keyPressed(KeyEvent e){
p.keyPressed(e);
}
}
}
Dude代码:
package ourgame;
import java.awt。*;
import java.awt.event.KeyEvent;
import javax.swing.ImageIcon;
public class Dude {
int x,dx,y;
图像仍然;
public Dude(){
ImageIcon i = new ImageIcon ( C:/background.jpg);
still = i.getImage();
x = 10 ;
y = 172 ;
}
public void move(){
x = x + dx;
}
public int getX(){
return x;
}
public int getY(){
return y;
}
public 图片getImage(){
return 但仍然;
}
public void keyPressed(KeyEvent e){
int key = e.getKeyCode();
if (key == KeyEvent.VK_LEFT)
dx = - 1 ;
if (key == KeyEvent.VK_RIGHT)
dx = 1 跨度>;
}
public void keyReleased(KeyEvent e){
int key = e.getKeyCode();
if (key == KeyEvent.VK_LEFT)
dx = 0 跨度>;
if (key == KeyEvent.VK_RIGHT)
dx = 0 跨度>;
}
}
框架代码:
< pre lang =java> package ourgame;
import javax.swing。*;
public class 框架{
public Frame(){
JFrame frame = new JFrame();
frame.add( new Board());
frame.setTitle( 2-D Test Game);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize( 700 , 365 );
frame.setVisible(true);
frame.setLocationRelativeTo(null);
}
public static void main( String [] args){
new Frame();
}
}
提前致谢!
你正在运行你的您的Mac上的应用程序,但您的图像路径是一个Windows路径。ImageIcon i = new ImageIcon(C:/character.png);。 Mac上的路径应为/User/xxx/your_projects/background.jpg。这是一条绝对的道路。您可以通过键盘快捷键command + i检查图像路径。如果项目中有图像文件,也可以使用项目的相对路径。
ImageIcon i = new ImageIcon(background.jpg);
Guys why is my image not loading on my JFrame??
BTW I am using eclipse on my mac.
Code for Board :
package ourgame;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Board extends JPanel implements ActionListener {
Dude p;
public Image img;
Timer time;
public Board() {
p = new Dude();
addKeyListener(new AL());
setFocusable(true);
ImageIcon i = new ImageIcon("C:/character.png");
img = i.getImage();
time = new Timer(5, this);
time.start();
}
public void actionPerformed(ActionEvent e) {
p.move();
repaint();
}
public void paint(Graphics g) {
super.paint(g);
Graphics2D g2d = (Graphics2D) g;
g2d.drawImage(img, 0, 0, null);
g2d.drawImage(p.getImage(), p.getX(), p.getY(), null);
}
private class AL extends KeyAdapter {
public void keyReleased(KeyEvent e) {
p.keyReleased(e);
}
public void keyPressed(KeyEvent e) {
p.keyPressed(e);
}
}
}
Code for Dude :
package ourgame;
import java.awt.*;
import java.awt.event.KeyEvent;
import javax.swing.ImageIcon;
public class Dude {
int x, dx, y;
Image still;
public Dude() {
ImageIcon i = new ImageIcon("C:/background.jpg");
still = i.getImage();
x = 10;
y = 172;
}
public void move() {
x = x + dx;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public Image getImage() {
return still;
}
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_LEFT)
dx = -1;
if (key == KeyEvent.VK_RIGHT)
dx = 1;
}
public void keyReleased(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_LEFT)
dx = 0;
if (key == KeyEvent.VK_RIGHT)
dx = 0;
}
}
Code for Frame:
package ourgame;
import javax.swing.*;
public class Frame {
public Frame(){
JFrame frame = new JFrame();
frame.add(new Board());
frame.setTitle("2-D Test Game");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(700,365);
frame.setVisible(true);
frame.setLocationRelativeTo(null);
}
public static void main(String[] args){
new Frame();
}
}
Thanks in advance!
you are running your app on your mac, but your image path is a windows path.ImageIcon i = new ImageIcon("C:/character.png");. The path on Mac should be "/User/xxx/your_projects/background.jpg". This is an absolute path. You can check the image path by keyboard shortcut "command + i". And you can also use relative path to your project if you have the image file in your project.
ImageIcon i = new ImageIcon("background.jpg");
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