modifyfriend.java

手机在线系统 采用Java 中的J2ME, JSP 跟MySql 运行环境是：jsdk1.4以上

/**
 * @(#)ModifyFriend.java	
 * Copyright (c) 2004-2005 wuhua of workroom Inc. All Rights Reserved.
 * @version 	1.0, 10/05/2004
 * @author 	饶荣庆
 * @author 	
 */
package com.j2me.phonebook;

import com.j2me.main.*;	
import javax.microedition.lcdui.*;

/**
 *此类是修改朋友信息的类
 */
public class  ModifyFriend extends Form implements CommandListener 
{
	private Display display = null;
	private PhoneBookMenu phoneBookMenu = null;
	public static Alert infoAlert = new Alert(null, null, null, AlertType.INFO); 	 //动态的改变语言
	public Alert alert = null;
	public StringItem idItem = null;
	public TextField nameTextField= null;
	public TextField phoneTextField= null;
	public TextField eMailTextField= null;
	public Command okCommand = null;			//定义确定软键
	public Command backCommand = null;			//定义离开软键
	private boolean isModify = true;   //确定可以修改
	private int _id;

	public ModifyFriend(String s)
	{
		super(s);
		this.alert = new Alert("提示", "修改成功", null, AlertType.INFO);	 //初始化信息
		this.alert.setTimeout(1000);
		this.infoAlert.setTimeout(1000);
		this.okCommand = new Command("确定", Command.OK, 2);	
		this.backCommand = new Command("返回", Command.BACK, 2);
		this.idItem = new StringItem("ID是",  null);
		this.nameTextField = new TextField("输入名", null, 30, TextField.ANY);
		this.phoneTextField = new TextField("输入电话", null, 15, TextField.PHONENUMBER);
		this.eMailTextField = new TextField("输入邮箱", null, 50, TextField.EMAILADDR);
		this.append(idItem);
		this.append(nameTextField);
		this.append(phoneTextField);
		this.append(eMailTextField);
		this.addCommand(backCommand);
		this.addCommand(okCommand);
		this.setCommandListener(this);
	}

	
	public void showForm(Display display, PhoneBookMenu phoneBookMenu, int id, String name, String phone, String eMail)	//用来显示界面
	{
		this.idItem.setText(id + "");
		this.nameTextField.setString(name);
		this.phoneTextField.setString(phone);
		this.eMailTextField.setString(eMail);
		this.display = display;
	   	this.phoneBookMenu = phoneBookMenu;
		this.display.setCurrent(this);
	}

	public void commandAction(Command c,Displayable s)
	{
		if(c == backCommand)
		{
			this.display.setCurrent(phoneBookMenu);
		}

		if (c == okCommand)			//修改
		{
			PhoneBook pb = new PhoneBook();
			try
			{
				_id = Integer.parseInt(idItem.getText());
			}
			catch(NumberFormatException e)
			{
				this.display.setCurrent(infoAlert);
				isModify = false;
			}
			String _name = nameTextField.getString();
		    String _phone = phoneTextField.getString();
			String _eMail = eMailTextField.getString();
			if (_name.compareTo("") == 0)
			{
				this.display.setCurrent(infoAlert);
				isModify = false;
			}
			if (_phone.compareTo("") == 0)
			{
				this.display.setCurrent(infoAlert);
				isModify = false;
			}
			if (isModify == true)  //确定修改
			{
				pb.modifyFriend(_id, _name, _phone, _eMail);  //调用修改方法	
				this.display.setCurrent(alert, phoneBookMenu);
				pb.closeRS();
			}
			isModify =true;			
		}
	}
}