Lwuit 钟表ClockWidget小应用程序

J2ME关于Lwuit应用的钟表ClockWidget程序

package com.mopietek;


import java.util.Calendar;
import java.util.Date;

import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

import com.sun.lwuit.Command;
import com.sun.lwuit.Dialog;
import com.sun.lwuit.Display;
import com.sun.lwuit.Form;
import com.sun.lwuit.Graphics;
import com.sun.lwuit.Image;
import com.sun.lwuit.Label;
import com.sun.lwuit.events.ActionEvent;
import com.sun.lwuit.layouts.BorderLayout;

public class LwuitClockDemo extends MIDlet{

	public LwuitClockDemo(){
		
	}
	
	public Form clockForm;
	
	
	
	protected void startApp() throws MIDletStateChangeException {
  
		Display.init(this);
		try{
			showClock();
			
		}catch(Exception e){
			e.printStackTrace();
		}
		
	}
	
	public void showClock(){
		
		try{
		 
			clockForm = new Form(){
				
				public void keyPressed(int keyCode){
					
					switch(keyCode){
					case 35:
						exitApp();
						break;
						default:
							break;
					}
					
				}
				
			};
			
			clockForm.setLayout(new BorderLayout());
		    
			Label animation = null;
			animation = crateClockLabel(clockForm);
			clockForm.addComponent(BorderLayout.NORTH,animation);
		    clockForm.addCommand(new Command("按'#'键退出"){
		    	
		    	public void actionPerformed(ActionEvent evt){
		    		exitApp();
		    	}
		    });
		    clockForm.show();
		 
		}catch(Exception e){
			e.printStackTrace();
		}
	}
	
	public Label crateClockLabel(final Form f){
		
		Label animationLabel = null;
		try{
			final Image clockBackGround = Image.createImage("/clockback1.png");
			final Image hourImage = Image.createImage("/hour.png");
			final Image minImage = Image.createImage("/min.png");
			final Image secImage = Image.createImage("/sec.png");
			
			animationLabel = new Label(""){
			  
				private long lastInvoke;
			    int hour,min,sec;
			    
			    public Image getIcon(){
			    
			    	return clockBackGround;
			    }
			    
			    public void initComponent(){
			    	//设置它以动画形式可见其外观
			    	f.registerAnimated(this);
			    }
			    
			    public boolean animate(){
			    	
			    	long current = System.currentTimeMillis();
			    	if(current - lastInvoke > 999){
			    		lastInvoke = current;
			    		return true;
			    	}
			    	
			    	return false;
			    }
              		
			    public void paint(Graphics g){
			    
			    	g.drawImage(clockBackGround, getX(), getY());
			     //获取时间
			     Calendar calendar = Calendar.getInstance();
			     Date date = new Date(System.currentTimeMillis());
			     calendar.setTime(date);
			     hour = calendar.get(Calendar.HOUR_OF_DAY);
			     min = calendar.get(Calendar.MINUTE);
			     sec = calendar.get(Calendar.SECOND);
			     
			     g.drawImage(hourImage.rotate(hour * 30 + min /2 - 90), getX(), getY());
			     g.drawImage(minImage.rotate(min * 6 - 90), getX(), getY());
			     g.drawImage(secImage.rotate(sec * 6 - 90), getX(), getY());
			    
			    }
			    
			    
			};
			
		}catch(Exception e){
			e.printStackTrace();
		}
		
		return animationLabel;
		
	}
	
	public void exitApp(){
		
		if(Dialog.show("LWUIT Clock", "退出吗?", "OK", "Cancel")){
			notifyDestroyed();
		}
	}
	
	protected void destroyApp(boolean unconditional)
			throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		
	}

	protected void pauseApp() {
		// TODO Auto-generated method stub
		
	}

	

}