maincanvas.java

J2ME的源码！我以前学习J2ME的源码哈！非常适合初学者

package src;

import java.io.IOException;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.lcdui.game.Sprite;


public class MainCanvas extends GameCanvas implements Runnable{
	private boolean	m_bRunning;				
	public Sprite m_CockSprite;					
	public Image m_BackImg;		
	
	public MainCanvas(){
		super(true);
		try{
			
			m_BackImg	= Image.createImage("/back.png");
			Image c_image = Image.createImage("/cock.png");	        
						
			m_CockSprite = new Sprite( c_image, 95, 85 );	//分割图片
			
			m_CockSprite.setFrame( 0 );      //初始化第一帧
				
			
			int X = getWidth();			
			int Y = getHeight() - 90;	
				
			m_CockSprite.setPosition(X , Y );
		}
		catch (IOException e){}               
		Start();								
	}
	public void Start(){
		m_bRunning = true;
//		Thread thread = new Thread(this);		
//		thread.start();		
		new Thread(this).start();
	}
	public void run() {						
		
		long T1 = System.currentTimeMillis();
		long T2 = T1;
		while(m_bRunning){
			T2 = System.currentTimeMillis();
			if( T2 - T1 > 100 ){			    
				T1 = T2;
				Input();
				Logic();
				Paint();
			}
		}
	}
	public void Stop(){						
		m_bRunning = false;
	}
	public void Input(){
	}
	public void Logic(){
		
		int n = m_CockSprite.getFrame();
		n ++;
		
		if( n >= m_CockSprite.getFrameSequenceLength() )
			n = 0;
		m_CockSprite.setFrame(n);
		
		int nPosX = m_CockSprite.getX();
		int nPosY = m_CockSprite.getY();
		nPosX -= 3;
		if( nPosX < -95 )
			nPosX = getWidth();
		m_CockSprite.setPosition( nPosX, nPosY );
	}
	public void Paint(){
		Graphics g = getGraphics();
		
		g.setColor(0,120,32);
		g.fillRect( 0, 0, getWidth(), getHeight() );
		
		
		int nPosX = getWidth()/2 - 100;			
		int nPosY = getHeight()/2 - 100;	
		g.drawImage( m_BackImg, nPosX, nPosY, 0);
		
		
		m_CockSprite.paint(g);
		
		flushGraphics();
	}
}