midlet5.java

这是郭克华老师的J2ME视频的源代码

package prj23_1;

import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.lcdui.game.Sprite;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet5 extends MIDlet {
	private MyGameCanvas mgc = new MyGameCanvas();
	private Display dis;
	protected void startApp() throws MIDletStateChangeException {
		dis = Display.getDisplay(this);
		dis.setCurrent(mgc);
	}

	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub

	}

	protected void pauseApp() {
		// TODO Auto-generated method stub

	}
	
	class MyGameCanvas extends GameCanvas implements Runnable{
		private Image img;
		private Sprite sp1;		
		private Graphics gra;
		private boolean RUN = true;
		public MyGameCanvas(){
			super(true);
			try{
				img = Image.createImage("/donghua.png");
				//sp1 = new Sprite(img);
				//你可以将img分割成几个图片小块，每个小块有一定的宽度和高度
				//以下代码将图片分为4帧，
				sp1 = new Sprite(img,img.getWidth()/4,img.getHeight());
				gra = this.getGraphics();
			}catch(Exception ex){
				ex.printStackTrace();
			}
			new Thread(this).start();
		}
		public void run(){
			while(RUN){
				gra.setColor(0,255,0);
				gra.fillRect(0,0,this.getWidth(),this.getHeight());
				sp1.paint(gra);				
				this.flushGraphics();				
				sp1.move(1, 1);
				sp1.nextFrame();
				try{
					Thread.currentThread().sleep(100);
				}catch(Exception ex){}
			}			
		}
	}


}