使用MIDP1.0实现TiledLayer的效果，并实现简单的滚屏

       程序实现的代码如下:

package gamecanvasuse;

import javax.microedition.lcdui.*;
import com.nokia.mid.ui.FullCanvas;

public class MIDP2Canvas extends FullCanvas {
  Image image = null;

  int index = 0;
  //每个单元使用的图象分块内容
  int[][] map = {{0,0,1,3,0,0,0},
                 {0,1,4,4,3,0,0},
                 {1,4,4,4,4,3,0},
      {0,0,0,0,-1,-1,-1}
                };
  public MIDP2Canvas() {
    //载入图片
    try{
      image = Image.createImage("/res/title.png");
    }catch(Exception e){

    }

  }

  protected void paint(Graphics g) {

    for(int i = 0;i < 4;i++){
      for(int j = 0;j < 4;j++){
        switch (map[j][i + index]){
          case 0:
            g.setColor(0xffffff);
            g.fillRect(i * 32,j * 32,32,32);
            g.setColor(0x000000);
            break;
          case 1:
            //绘制图块
            g.setClip(i * 32,j * 32,32,32);
            g.drawImage(image,i * 32,j * 32,Graphics.TOP | Graphics.LEFT);
            g.setClip(0,0,this.getWidth(),this.getHeight());
            break;
          case 2:
            //绘制图块
            g.setClip(i * 32,j * 32,32,32);
            g.drawImage(image,i * 32 - 32,j * 32,Graphics.TOP | Graphics.LEFT);
            g.setClip(0,0,this.getWidth(),this.getHeight());
            break;
          case 3:
            //绘制图块
            g.setClip(i * 32,j * 32,32,32);
            g.drawImage(image,i * 32 - 64,j * 32,Graphics.TOP | Graphics.LEFT);
            g.setClip(0,0,this.getWidth(),this.getHeight());
            break;
          case 4:
            //绘制图块
            g.setClip(i * 32,j * 32,32,32);
            g.drawImage(image,i * 32 - 96,j * 32,Graphics.TOP | Graphics.LEFT);
            g.setClip(0,0,this.getWidth(),this.getHeight());
            break;
        }
      }
    }

    g.setColor(0xff0000);
    g.fillRect(32,32,32,32);

    g.setColor(0x000000);
  }

  public void keyPressed(int keyCode){
    index++;
    repaint();
  }

}