welcomeui.java

基于j2me的电话本基于j2me的电话本

package com.hziee.phone_book.ui;

import java.io.IOException;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.*;

public class WelcomeUI extends Canvas implements CommandListener
{

    private UIController uicontroller;
    private int width;
    private int height;
    private Image image;
    /**欢迎界面中的作者和学校*/
    private String message = Title.author;
    private String school = Title.school;
    private static final Command menuCmd=new Command("主菜单",Command.BACK,2);
    private static final Command chooseCmd=new Command("通讯录",Command.OK,1);

    public WelcomeUI(UIController uicontroller)
    {     
     this.uicontroller = uicontroller;
     this.addCommand(menuCmd);
   	 this.addCommand(chooseCmd);
  	 this.setCommandListener(this);
    	width = this.getWidth();
        height = this.getHeight();
    try
    {image = Image.createImage("/welcome.png");}
    catch(IOException e){}
    }
   
    public Image createImage(String name)
    {
        Image image = null;
        try
        {
            image = Image.createImage(name);
        }
        catch(IOException e)
        {
            	
        }
        return image;
    }
   

    public void setMessage(String message)
    {
        this.message = message;
        this.repaint();
    }

    public void setSchool(String school)
    {
        this.school = school;
        repaint();
    }

    protected void paint(Graphics arg0)//调用paint方法！
    {   
 //   	String message = Title.author;
        // TODO Auto-generated method stub
        //arg0.setColor(128, 128, 255);
        //arg0.drawRect(5, 5, width - 10, height - 10);
        if(image!=null)
        {
            arg0.drawImage(image,(width-image.getWidth())/2,
                    (height-image.getHeight())/2,Graphics.TOP|Graphics.LEFT);
            arg0.drawString(message, getWidth()/3, getHeight()/10, Graphics.TOP|Graphics.LEFT);
        }
        else
        {
        	arg0.drawString(message, getWidth()/3, getHeight()/4, Graphics.TOP|Graphics.LEFT);
        	arg0.drawString(school, getWidth()/6, getHeight()/2, Graphics.TOP|Graphics.LEFT);
        }
        /*
        if (message != null)
        {
            arg0.drawString(message, width / 2, height / 3, Graphics.BOTTOM
                    | Graphics.HCENTER);
        }
        if (school != null)
        {
            arg0.drawString(school, width / 2, height * 2 / 3, Graphics.BOTTOM
                    | Graphics.HCENTER);
        }
        */
    }
   
public void commandAction(Command command,Displayable displayable){
	   if(command==chooseCmd)
	   {
		   uicontroller.handleEvent(UIController.EventID.LIST_RECORD);
	   }
	 }

}