aboutscreen.java

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import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;

  public class AboutScreen extends GameCanvas implements Runnable,CommandListener {
     private Puke midlet;
     private boolean Pause,Up;
     private Sprite title,ordeR;
     private Image im_orde,im_title,im_about,window;
     private int Y;
     
     
  public AboutScreen (Puke midlet) throws Exception {
  	super(true);
  	setFullScreenMode(true);  
    this.midlet = midlet;    
    try{
		im_orde = Image.createImage("/orde.png");
		im_title	= Image.createImage("/title.png");
		im_about = Image.createImage("/about.png");
		window = Image.createImage("/window.png");
	}catch(java.io.IOException e){}  
    title = new Sprite(im_title,80,18);
    title.setFrame(3);
    title.setPosition(48,18);
    Y=48;Up=true;
    ordeR = new Sprite (im_orde,23,11);
	ordeR.setPosition(152,208);
	ordeR.setFrame(2);
    startThread();
    setCommandListener(this);
  }
  
  private void startThread(){
    	Pause=false;
    	Thread th=new Thread(this);
    	th.start();	
    }


  public void commandAction(Command c, Displayable d) {
  }
  
  public void keyPressed(int keyCode){             
      switch(keyCode){//三页显示        
      	case -7://SOFT2-后退
             if(midlet.BackTo==1)      	     
             midlet.mainMenuScreenShow();
      	     break;
      	
      }
  }
  private void input() {
      int keyStates = getKeyStates();
      if((keyStates & FIRE_PRESSED) != 0){
      	//中
      	Up=!Up;
      }else if ((keyStates & DOWN_PRESSED) !=0 ){
    	//下
    	Up=true;
    	Y+=3;
    	
    	
      }
   }
  
  public void run(){
  	   while(!Pause){
  	   	   input();
  	   	   if(Up)Y-=1;  	   	   
  	   	   try{Thread.sleep(20);
  	       }catch (Exception e){}
  	       if(Y<-90){
  	       	if(midlet.BackTo==1)
  	       	 Pause=true;
  	       	 try{Thread.sleep(3500);
  	         }catch (Exception e){}
             midlet.mainMenuScreenShow();
  	       }
  	       if(Y>170)Y=170;
           repaint();
  	   	}
  	   	
  	}
  
  
  public void paint(Graphics g) {  	    
        g.setColor(0x000000);
		g.fillRect(0,0,getWidth(),getHeight());		
        g.drawImage(im_about,27,Y,Graphics.TOP|Graphics.LEFT);
        g.drawImage(window,0,0,Graphics.TOP|Graphics.LEFT);
        title.paint(g);
        ordeR.paint(g);

  }
  

}