welcomecanvas.java

能添加删除通讯录

package AdressList;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;
//欢迎界面
public class WelcomeCanvas extends Canvas implements CommandListener{
	private Command cmdPhone = new Command("电话本",Command.SCREEN,1);
	private Command cmdExit = new Command("退出",Command.EXIT,1);
	private PhoneMIDlet pm;
	public WelcomeCanvas(PhoneMIDlet pm){
		this.pm = pm;
		this.addCommand(cmdPhone);
		this.addCommand(cmdExit);
		this.setCommandListener(this);
	}	
	public void commandAction(Command c,Displayable d){
		if(c==cmdPhone){
			pm.changeInterface("PhoneList");
		}
		else if(c==cmdExit){
			pm.notifyDestroyed();
		}
	}
	public void paint(Graphics g){
		String str = "欢迎光临";
		g.setFont(Font.getFont(Font.FACE_SYSTEM,Font.STYLE_BOLD,Font.SIZE_LARGE));
		g.setColor(255,0,0);
		g.drawString(str, this.getWidth()/2, 50, Graphics.TOP|Graphics.HCENTER);
	}
	
}