midlet4.java

这是郭克华老师的J2ME视频的源代码

package prj24_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.TiledLayer;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet4 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 map;
		private TiledLayer tlRoad;
		private TiledLayer tlWall;
		
		private Graphics gra;
		public MyGameCanvas(){
			super(true);
			try{
				map = Image.createImage("/map.png");
				gra = this.getGraphics();
				tlRoad = new TiledLayer(4,4,map,map.getWidth()/2,map.getHeight());
				tlWall = new TiledLayer(4,4,map,map.getWidth()/2,map.getHeight());		
				
				int[][] cells = new int[][]{
						{1,2,1,2},
						{1,2,2,2},
						{1,2,1,2},
						{1,2,1,2}
					};
				for(int i=0;i<4;i++){
					for(int j=0;j<4;j++){
						if(cells[j][i]==1){
							tlRoad.setCell(j, i, cells[i][j]);
						}
						else{
							tlWall.setCell(j, i, cells[i][j]);
						}
					}
				}
				
				tlWall.paint(gra);
				tlRoad.paint(gra);
			}catch(Exception ex){
				ex.printStackTrace();
			}
			
		}
		public void run(){
			
		}
	}

}