newphoneui.java

基于j2me的电话本基于j2me的电话本

package com.hziee.phone_book.ui;

import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Item;
import javax.microedition.lcdui.ItemStateListener;
import javax.microedition.lcdui.TextField;
import javax.microedition.lcdui.AlertType;
import com.hziee.phone_book.model.*;
/**
 * 该类是添加新记录的一个界面类
 * 继承于Form类
 */
public class NewPhoneUI extends Form implements CommandListener,
ItemStateListener
{
private UIController uicontroller;//界面控制对象
private TextField nameField;
private ChoiceGroup choice;
private TextField mobileField;
private TextField phoneField;
private TextField emailField;
private int phoneIndex;
private int emailIndex;
/*保存和返回命令*/
public static final Command saveCommand = new Command("保存", Command.OK, 2);
public static final Command backCommand = new Command("返回", Command.BACK, 3);

public NewPhoneUI(UIController uicontroller)
{
super(Title.add_record);//这里的super()调用基类的构造函数
this.uicontroller = uicontroller;//在newphoneUI中定义uicontroller

/**TextField类的四个参数
 * 1.表示标题，2.初始内容，3.允许输入的最大字符数，4.限制类型
 *这里TextField.any任何类型的
 */
nameField = new TextField(Title.name, null, 25, TextField.ANY);
mobileField = new TextField(Title.mobile, null, 25,
        TextField.PHONENUMBER);//电话类型

/**
 * ChoiceGroup.EXCLUSIVE、ChoiceGroup.MULTIPLE两种模式，
 * 分别支持单选和多选
 */
choice = new ChoiceGroup(null, ChoiceGroup.MULTIPLE);

phoneField = new TextField(Title.phone, null, 25, TextField.PHONENUMBER);
emailField = new TextField(Title.email, null, 25, TextField.EMAILADDR);//邮件类型

choice.append(Title.detail+"cccccccc", null);//详细信息
this.append(nameField);
this.append(mobileField);
this.append(choice);
this.addCommand(saveCommand);
this.addCommand(backCommand);
this.setCommandListener(this);
this.setItemStateListener(this);
}

//clear方法将姓名和手机号码设置为空
public void clear()
{
nameField.setString("");
mobileField.setString("");
if (choice.isSelected(0))
{
    phoneField.setString("");
    emailField.setString("");
}
}

public void commandAction(Command arg0, Displayable arg1)
{
// TODO Auto-generated method stub
if (arg0 == backCommand)
{
    uicontroller.handleEvent(UIController.EventID.EVENT_NEWPHONE_BACK_MAINUI);
} else if (arg0 == saveCommand)
{   //按下保存键，将name保存
    String userName = nameField.getString();
    if (userName.length() == 0)//长度为0，则提出警告
    {
        uicontroller.showAlert(Title.userNameNull, this,
                AlertType.WARNING);
        return;
    }
    //保存mobilephone
    String mobilePhone = mobileField.getString();
    if (mobilePhone.length() == 0)
    {
        uicontroller.showAlert(Title.mobilePhoneNull, this,
                AlertType.WARNING);
        return;
    }
    String phone = "";
    String email = "";
    if (choice.isSelected(0))
    {//如果choice被选中，保存电话和邮件地址
        phone = phoneField.getString();
        email = emailField.getString();
    }

    Account newAccount = new Account(userName, mobilePhone, phone,
            email);//数据转换
    uicontroller.handleEvent(
            UIController.EventID.EVENT_SAVE_RECORD_SELECTED,
            new Object[] { newAccount });
}

}

public void itemStateChanged(Item item)
{
if (item == choice)
{
    if (choice.isSelected(0))
    {
        phoneIndex = this.append(phoneField);
        emailIndex = this.append(emailField);
    } else
    {
        this.delete(emailIndex);
        this.delete(phoneIndex);
    }
}

}

}