threadcanvas2.java

来自「我编写得JAVA ME 手机俄罗斯方块」· Java 代码 · 共 67 行

import javax.microedition.lcdui.*;


public class ThreadCanvas2 extends Canvas implements Runnable {
	int x,y;
	Thread thd;
	
	Image img;
	Graphics grphx;
	boolean  begin;
	
	
	
	
	public ThreadCanvas2(){
		x=this.getWidth()/2-10;
		y=0;
		img = Image.createImage(100,100);
		begin = true;
		grphx = img.getGraphics();	

		thd = new Thread(this);
		thd.start();
		
	}
	protected void paint(Graphics g) {
		// TODO 自动生成方法存根
		g.setColor(0);
		g.fillRect(0,0,getWidth(),getHeight());
		
		grphx.setColor(255,0,0);
		grphx.fillRect(0,0,100,100);
		grphx.setColor(0,255,255);
		grphx.drawRect(45, y, 10, 10);
		grphx.fillRect(45, y, 10, 10);
		
		g.drawImage(img,0, 0, Graphics.LEFT|Graphics.TOP);
		
	}
	public void start(){
		begin = true;
	}
	public void pause(){
		begin = false;
	}

	public void run() {
		// TODO 自动生成方法存根
		while(true){
			if(begin){
				y+=10;
				try {
					Thread.sleep(100);
				} catch (InterruptedException e) {
					// TODO 自动生成 catch 块
					e.printStackTrace();
				}
				if(y>100){
					y=0;
				}
				repaint();
			}
		}
	}

}