animstioncanvas.java

上课自己制作的一个小的J2me程序

import java.io.IOException;
import javax.microedition.lcdui.Canvas;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

/**
 *
 * @author hp
 */
public class AnimstionCanvas extends Canvas implements Runnable{
    private Image[] img;
    private int direction;
    public AnimstionCanvas(){
        try {
            direction = 0;
            img = new Image[4];

            img[0] = Image.createImage("/image1.png");
            img[1] = Image.createImage("/image2.png");
            img[2] = Image.createImage("/image3.png");
            img[3] = Image.createImage("/image4.png");
        } catch (IOException ex) {
            ex.printStackTrace();
        }
       
    }
    
    protected void paint(Graphics g) {
        g.setColor(0xffffff);
        g.fillRect(0, 0, getWidth(), getHeight());
        
        switch(direction){
            case UP:
                 g.drawImage(img[0], 0, 0, 0);
                 break;
            case DOWN:
                 g.drawImage(img[1], 0, 0, 0);
                 break;
            case LEFT:
                 g.drawImage(img[2], 0, 0, 0);
                 break;
            case RIGHT:
                 g.drawImage(img[3], 0, 0, 0);
                 break;                           
        }
    }

    public void run() {
        //throw new UnsupportedOperationException("Not supported yet.");
    }
     protected void keyPressed(int keyCode){
  //(this.getGameAction(keyCode))这是将keycode转换为游戏按键下的按键数字代码
         direction=this.getGameAction(keyCode);
         repaint();//重新去执行paint这样就可以有效果实现了
         
}


}