spritecanvas.java

javaME useful code with the J2ME helpful learning cla

import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
public class SpriteCanvas extends GameCanvas implements Runnable{

	private int drawX = 0;
	private int drawY = 0;
	
	private Sprite sprite;
	private Image spriteImage;
	private Graphics g;
	private int down_seq[] = {0,1,2}; 
	protected SpriteCanvas() {
		super(true);
		try{
			spriteImage = Image.createImage("/man.png");
			
		}catch(Exception e){
			
		}	
		sprite = new Sprite(spriteImage,32,48);
		sprite.setFrameSequence(down_seq);
		g = this.getGraphics();
		Thread thread = new Thread(this);
		thread.start();
		
	}	
	public void run() {
		while(true){
			try {
				Thread.sleep(100);
			} catch (InterruptedException e) {				
				e.printStackTrace();
			}
			
			g.setColor(255,255,255);
			g.fillRect(0,0,getWidth(),getHeight());
			//下一图片
			sprite.nextFrame();
			if(drawY + 5 < getHeight()){
				drawY = drawY +5;
				sprite.setPosition(drawX,drawY);
			}
			else{//如果超出屏幕
				drawY = 0;
				sprite.setPosition(drawX,drawY);
			}
			sprite.paint(g);
			flushGraphics();
		}
	}
}