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你好，按照你的要求代码如下，修改了三处
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简单说明一下，就是加了一个标识boolean，用true/false来表示显示第一张/第二张图片
import java.awt.*;
import java.awt.event.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.*;
public class zhandou extends JFrame implements KeyListener {
Image roleImage, Image1;
int x, y;
public zhandou() {
super("MOVE");
Container c = getContentPane();
setSize(320, 240);
setVisible(true);
loadImage();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// setFocusable(true);
addKeyListener(this);
}
boolean key = true;// 加这样一个标识，true是第一张图片，false为第二张图片
public void paint(Graphics g) {
super.paint(g);
// drawRole(g);
if (key) {// 根据标识判断需要显示的图片
g.drawImage(roleImage, x, y, this);
} else {
g.drawImage(Image1, x, y, this);
}
}
public void loadImage() {
ImageIcon icon = new ImageIcon("tupian/草地.jpg");
roleImage = icon.getImage();
ImageIcon ic = new ImageIcon("tupian/right.gif");
Image1 = ic.getImage();
}
class Thread1 extends Thread {
}
/*
* private void drawRole(Graphics g) { g.drawImage(roleImage,100,100,this);
* }
*/
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_UP)
y = y - 5;
else if (e.getKeyCode() == KeyEvent.VK_DOWN)
y = y + 5;
else if (e.getKeyCode() == KeyEvent.VK_RIGHT)
x = x + 5;
else if (e.getKeyCode() == KeyEvent.VK_LEFT)
x = x - 5;
else if (e.getKeyCode() == KeyEvent.VK_ENTER)
key = !key;// 切换标识状态
repaint();
}
public void keyReleased(KeyEvent e) {
}
public void keyTyped(KeyEvent e) {
}
public static void main(String args[]) {
new zhandou();
}
}
改变规制时候的X Y就行了.伪代码如下.
int x =0,y=0,;
x++; y++;
g.drawImage( "图片信息" , x, y,锚点);
大概就这样图片就动了.你想移动到哪加个判断就行了.
代码如下：import javax.microedition.lcdui.Canvas;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Graphics;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;public class Zfx extends MIDlet { private Display display; public Zfx() { display=Display.getDisplay(this); Zfxc qs=new Zfxc(); display.setCurrent(qs); } protected void destroyApp(boolean arg0) throws MIDletStateChangeException { } protected void pauseApp() { } protected void startApp() throws MIDletStateChangeException { }}class Zfxc extends Canvas implements Runnable{ private int x,y,x1,y1,i; private boolean flag; Zfxc(){ init(); } private void init(){ Thread thread=new Thread(this); thread.start(); } protected void paint(Graphics g) { g.setColor(255,255,255); g.fillRect(0, 0, this.getWidth(), this.getHeight()); g.setColor(0); g.fillRect(x, y, 10, 10); } private void logic(){ if(x=this.getWidth()-10){ x1=2; } if(x1==1){ x+=3; }else if(x1==2){ x-=3; } if(y=this.getHeight()-10){ y1=2; } if(y1==1){ y+=3; }else if(y1==2){ y-=3; } } protected void keyPressed(int keyCode) { if(keyCode==-5){ if(i==0){ flag=true; i=1; }else if(i==1){ flag=false; i=0; } } } public void run() { while(true){ if(flag){ logic(); } repaint(); try { Thread.sleep(80); } catch (InterruptedException e) { e.printStackTrace(); } } }}求Java 实现绘制图形并移动代码
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
public class DrawTest extends JFrame {
private int x = 50;
private int y = 50;
private Image offScreenImage = null;
@Override
public void paint(Graphics g) {
Color c = g.getColor();
g.setColor(Color.BLACK);
g.fillOval(x, y, 30, 30);
g.setColor(c);
}
public void update(Graphics g) {
if (offScreenImage == null) {
offScreenImage = this.createImage(500, 500);
}
Graphics gOffScreen = offScreenImage.getGraphics();
Color c = gOffScreen.getColor();
gOffScreen.setColor(Color.GREEN);
gOffScreen.fillRect(0, 0, 500, 500);
gOffScreen.setColor(c);
paint(gOffScreen);
g.drawImage(offScreenImage, 0, 0, null);
}
public static void main(String[] args) {
DrawTest d = new DrawTest();
}
public DrawTest() {
init();
addKeyListener(new KeyAdapter() {
public void keyPressed(final KeyEvent e) {
int code = e.getKeyCode();
switch (code) {
case KeyEvent.VK_UP:
y -= 5;
break;
case KeyEvent.VK_RIGHT:
x += 5;
break;
case KeyEvent.VK_DOWN:
y += 5;
break;
case KeyEvent.VK_LEFT:
x -= 5;
break;
}
}
});
}
public void init() {
this.setDefaultCloseOperation(this.EXIT_ON_CLOSE);
this.setBackground(Color.GREEN);
this.setResizable(false);
this.setBounds(140, 140, 500, 500);
this.setVisible(true);
MyThread mt = new MyThread();
new Thread(mt).start();
}
class MyThread implements Runnable {
public void run() {
while (true) {
repaint();
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
以上