//
// AppDelegate.m
// LocalNotification
//
// Created by Kenshin Cui on 14/03/28.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "AppDelegate.h"
#import "KCMainViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

#pragma mark - 應(yīng)用代理方法
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  
  _window=[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
  
  _window.backgroundColor =[UIColor colorWithRed:249/255.0 green:249/255.0 blue:249/255.0 alpha:1];
  
  //設(shè)置全局導(dǎo)航條風(fēng)格和顏色
  [[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:23/255.0 green:180/255.0 blue:237/255.0 alpha:1]];
  [[UINavigationBar appearance] setBarStyle:UIBarStyleBlack];
  
  KCMainViewController *mainController=[[KCMainViewController alloc]init];
  _window.rootViewController=mainController;
  
  [_window makeKeyAndVisible];

  //如果已經(jīng)獲得發(fā)送通知的授權(quán)則創(chuàng)建本地通知，否則請(qǐng)求授權(quán)(注意：如果不請(qǐng)求授權(quán)在設(shè)置中是沒有對(duì)應(yīng)的通知設(shè)置項(xiàng)的，也就是說如果從來沒有發(fā)送過請(qǐng)求，即使通過設(shè)置也打不開消息允許設(shè)置)
  if ([[UIApplication sharedApplication]currentUserNotificationSettings].types!=UIUserNotificationTypeNone) {
    [self addLocalNotification];
  }else{
    [[UIApplication sharedApplication]registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
  }
  
  return YES;
}

#pragma mark 調(diào)用過用戶注冊(cè)通知方法之后執(zhí)行（也就是調(diào)用完registerUserNotificationSettings:方法之后執(zhí)行）
-(void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings{
  if (notificationSettings.types!=UIUserNotificationTypeNone) {
    [self addLocalNotification];
  }
}

#pragma mark 進(jìn)入前臺(tái)后設(shè)置消息信息
-(void)applicationWillEnterForeground:(UIApplication *)application{
  [[UIApplication sharedApplication]setApplicationIconBadgeNumber:0];//進(jìn)入前臺(tái)取消應(yīng)用消息圖標(biāo)
}

#pragma mark - 私有方法
#pragma mark 添加本地通知
-(void)addLocalNotification{
  
  //定義本地通知對(duì)象
  UILocalNotification *notification=[[UILocalNotification alloc]init];
  //設(shè)置調(diào)用時(shí)間
  notification.fireDate=[NSDate dateWithTimeIntervalSinceNow:10.0];//通知觸發(fā)的時(shí)間，10s以后
  notification.repeatInterval=2;//通知重復(fù)次數(shù)
  //notification.repeatCalendar=[NSCalendar currentCalendar];//當(dāng)前日歷，使用前最好設(shè)置時(shí)區(qū)等信息以便能夠自動(dòng)同步時(shí)間
  
  //設(shè)置通知屬性
  notification.alertBody=@"最近添加了諸多有趣的特性，是否立即體驗(yàn)？"; //通知主體
  notification.applicationIconBadgeNumber=1;//應(yīng)用程序圖標(biāo)右上角顯示的消息數(shù)
  notification.alertAction=@"打開應(yīng)用"; //待機(jī)界面的滑動(dòng)動(dòng)作提示
  notification.alertLaunchImage=@"Default";//通過點(diǎn)擊通知打開應(yīng)用時(shí)的啟動(dòng)圖片,這里使用程序啟動(dòng)圖片
  //notification.soundName=UILocalNotificationDefaultSoundName;//收到通知時(shí)播放的聲音，默認(rèn)消息聲音
  notification.soundName=@"msg.caf";//通知聲音（需要真機(jī)才能聽到聲音）
  
  //設(shè)置用戶信息
  notification.userInfo=@{@"id":@1,@"user":@"Kenshin Cui"};//綁定到通知上的其他附加信息
  
  //調(diào)用通知
  [[UIApplication sharedApplication] scheduleLocalNotification:notification];
}

#pragma mark 移除本地通知，在不需要此通知時(shí)記得移除
-(void)removeNotification{
  [[UIApplication sharedApplication] cancelAllLocalNotifications];
}
@end

//
// AppDelegate.m
// LocalNotification
//
// Created by Kenshin Cui on 14/03/28.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "AppDelegate.h"
#import "KCMainViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

#pragma mark - 應(yīng)用代理方法
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  
  _window=[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
  
  _window.backgroundColor =[UIColor colorWithRed:249/255.0 green:249/255.0 blue:249/255.0 alpha:1];
  
  //設(shè)置全局導(dǎo)航條風(fēng)格和顏色
  [[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:23/255.0 green:180/255.0 blue:237/255.0 alpha:1]];
  [[UINavigationBar appearance] setBarStyle:UIBarStyleBlack];
  
  KCMainViewController *mainController=[[KCMainViewController alloc]init];
  _window.rootViewController=mainController;
  
  [_window makeKeyAndVisible];

  //添加通知
  [self addLocalNotification];

  //接收通知參數(shù)
  UILocalNotification *notification=[launchOptions valueForKey:UIApplicationLaunchOptionsLocalNotificationKey];
  NSDictionary *userInfo= notification.userInfo;
  
  [userInfo writeToFile:@"/Users/kenshincui/Desktop/didFinishLaunchingWithOptions.txt" atomically:YES];
  NSLog(@"didFinishLaunchingWithOptions:The userInfo is %@.",userInfo);
  
  return YES;
}

#pragma mark 接收本地通知時(shí)觸發(fā)
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification{
  NSDictionary *userInfo=notification.userInfo;
  [userInfo writeToFile:@"/Users/kenshincui/Desktop/didReceiveLocalNotification.txt" atomically:YES];
  NSLog(@"didReceiveLocalNotification:The userInfo is %@",userInfo);
}

#pragma mark 調(diào)用過用戶注冊(cè)通知方法之后執(zhí)行（也就是調(diào)用完registerUserNotificationSettings:方法之后執(zhí)行）
-(void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings{
  if (notificationSettings.types!=UIUserNotificationTypeNone) {
    [self addLocalNotification];
  }
}

#pragma mark 進(jìn)入前臺(tái)后設(shè)置消息信息
-(void)applicationWillEnterForeground:(UIApplication *)application{
  [[UIApplication sharedApplication]setApplicationIconBadgeNumber:0];//進(jìn)入前臺(tái)取消應(yīng)用消息圖標(biāo)
}

#pragma mark - 私有方法
#pragma mark 添加本地通知
-(void)addLocalNotification{
  
  //定義本地通知對(duì)象
  UILocalNotification *notification=[[UILocalNotification alloc]init];
  //設(shè)置調(diào)用時(shí)間
  notification.fireDate=[NSDate dateWithTimeIntervalSinceNow:10.0];//通知觸發(fā)的時(shí)間，10s以后
  notification.repeatInterval=2;//通知重復(fù)次數(shù)
  //notification.repeatCalendar=[NSCalendar currentCalendar];//當(dāng)前日歷，使用前最好設(shè)置時(shí)區(qū)等信息以便能夠自動(dòng)同步時(shí)間
  
  //設(shè)置通知屬性
  notification.alertBody=@"最近添加了諸多有趣的特性，是否立即體驗(yàn)？"; //通知主體
  notification.applicationIconBadgeNumber=1;//應(yīng)用程序圖標(biāo)右上角顯示的消息數(shù)
  notification.alertAction=@"打開應(yīng)用"; //待機(jī)界面的滑動(dòng)動(dòng)作提示
  notification.alertLaunchImage=@"Default";//通過點(diǎn)擊通知打開應(yīng)用時(shí)的啟動(dòng)圖片
  //notification.soundName=UILocalNotificationDefaultSoundName;//收到通知時(shí)播放的聲音，默認(rèn)消息聲音
  notification.soundName=@"msg.caf";//通知聲音（需要真機(jī)）
  
  //設(shè)置用戶信息
  notification.userInfo=@{@"id":@1,@"user":@"Kenshin Cui"};//綁定到通知上的其他額外信息
  
  //調(diào)用通知
  [[UIApplication sharedApplication] scheduleLocalNotification:notification];
}
@end

//
// AppDelegate.m
// pushnotification
//
// Created by Kenshin Cui on 14/03/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "AppDelegate.h"
#import "KCMainViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

#pragma mark - 應(yīng)用程序代理方法
#pragma mark 應(yīng)用程序啟動(dòng)之后
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  
  _window=[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
  
  _window.backgroundColor =[UIColor colorWithRed:249/255.0 green:249/255.0 blue:249/255.0 alpha:1];
  
  //設(shè)置全局導(dǎo)航條風(fēng)格和顏色
  [[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:23/255.0 green:180/255.0 blue:237/255.0 alpha:1]];
  [[UINavigationBar appearance] setBarStyle:UIBarStyleBlack];
  
  KCMainViewController *mainController=[[KCMainViewController alloc]init];
  _window.rootViewController=mainController;
  
  [_window makeKeyAndVisible];
  
  //注冊(cè)推送通知（注意iOS8注冊(cè)方法發(fā)生了變化）
  [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
  [application registerForRemoteNotifications];
  
  return YES;
}
#pragma mark 注冊(cè)推送通知之后
//在此接收設(shè)備令牌
-(void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken{
  [self addDeviceToken:deviceToken];
  NSLog(@"device token:%@",deviceToken);
}

#pragma mark 獲取device token失敗后
-(void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error{
  NSLog(@"didFailToRegisterForRemoteNotificationsWithError:%@",error.localizedDescription);
  [self addDeviceToken:nil];
}

#pragma mark 接收到推送通知之后
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{
  NSLog(@"receiveRemoteNotification,userInfo is %@",userInfo);
}

#pragma mark - 私有方法
/**
 * 添加設(shè)備令牌到服務(wù)器端
 *
 * @param deviceToken 設(shè)備令牌
 */
-(void)addDeviceToken:(NSData *)deviceToken{
  NSString *key=@"DeviceToken";
  NSData *oldToken= [[NSUserDefaults standardUserDefaults]objectForKey:key];
  //如果偏好設(shè)置中的已存儲(chǔ)設(shè)備令牌和新獲取的令牌不同則存儲(chǔ)新令牌并且發(fā)送給服務(wù)器端
  if (![oldToken isEqualToData:deviceToken]) {
    [[NSUserDefaults standardUserDefaults] setObject:deviceToken forKey:key];
    [self sendDeviceTokenWidthOldDeviceToken:oldToken newDeviceToken:deviceToken];
  }
}

-(void)sendDeviceTokenWidthOldDeviceToken:(NSData *)oldToken newDeviceToken:(NSData *)newToken{
  //注意一定確保真機(jī)可以正常訪問下面的地址
  NSString *urlStr=@"http://192.168.1.101/RegisterDeviceToken.aspx";
  urlStr=[urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
  NSURL *url=[NSURL URLWithString:urlStr];
  NSMutableURLRequest *requestM=[NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:10.0];
  [requestM setHTTPMethod:@"POST"];
  NSString *bodyStr=[NSString stringWithFormat:@"oldToken=%@&newToken=%@",oldToken,newToken];
  NSData *body=[bodyStr dataUsingEncoding:NSUTF8StringEncoding];
  [requestM setHTTPBody:body];
  NSURLSession *session=[NSURLSession sharedSession];
  NSURLSessionDataTask *dataTask= [session dataTaskWithRequest:requestM completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    if (error) {
      NSLog(@"Send failure,error is :%@",error.localizedDescription);
    }else{
      NSLog(@"Send Success!");
    }
    
  }];
  [dataTask resume];
}
@end

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using CMJ.Framework.Data;

namespace WebServer
{
  public partial class RegisterDeviceToken : System.Web.UI.Page
  {
    private string _appID = @"com.cmjstudio.pushnotification";
    private SqlHelper _helper = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {
      try
      {
        string oldToken = Request["oldToken"] + "";
        string newToken = Request["newToken"] + "";
        string sql = "";
        //如果傳遞舊的設(shè)備令牌則刪除舊令牌添加新令牌
        if (oldToken != "")
        {
          sql = string.Format("DELETE FROM dbo.Device WHERE AppID='{0}' AND DeviceToken='{1}';", _appID, oldToken);
        }
        sql += string.Format(@"IF NOT EXISTS (SELECT ID FROM dbo.Device WHERE AppID='{0}' AND DeviceToken='{1}')
                    INSERT INTO dbo.Device ( AppID, DeviceToken ) VALUES ( N'{0}', N'{1}');", _appID, newToken);
        _helper.ExecuteNonQuery(sql);
        Response.Write("注冊(cè)成功！");
      }
      catch(Exception ex)
      {
        Response.Write("注冊(cè)失敗，錯(cuò)誤詳情："+ex.ToString());
      }
    }
  }
}

using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using PushSharp;
using PushSharp.Apple;
using CMJ.Framework.Data;
using CMJ.Framework.Logging;
using CMJ.Framework.Windows.Forms;

namespace PushNotificationServer
{
  public partial class frmMain : PersonalizeForm
  {
    private string _appID = @"com.cmjstudio.pushnotification";
    private SqlHelper _helper = new SqlHelper();
    public frmMain()
    {
      InitializeComponent();
    }

    private void btnClose_Click(object sender, EventArgs e)
    {
      this.Close();
    }

    private void btnSend_Click(object sender, EventArgs e)
    {
      List<string> deviceTokens = GetDeviceToken();
      SendMessage(deviceTokens, tbMessage.Text);
    }

    #region 發(fā)送消息
    /// <summary>
    /// 取得所有設(shè)備令牌
    /// </summary>
    /// <returns>設(shè)備令牌</returns>
    private List<string> GetDeviceToken()
    {
      List<string> deviceTokens = new List<string>();
      string sql = string.Format("SELECT DeviceToken FROM dbo.Device WHERE AppID='{0}'",_appID);
      DataTable dt = _helper.GetDataTable(sql);
      if(dt.Rows.Count>0)
      {
        foreach(DataRow dr in dt.Rows)
        {
          deviceTokens.Add((dr["DeviceToken"]+"").TrimStart('<').TrimEnd('>').Replace(" ",""));
        }
      }
      return deviceTokens;
    }
    
    /// <summary>
    /// 發(fā)送消息
    /// </summary>
    /// <param name="deviceToken">設(shè)備令牌</param>
    /// <param name="message">消息內(nèi)容</param>
    private void SendMessage(List<string> deviceToken, string message)
    {
      //創(chuàng)建推送對(duì)象
      var pusher = new PushBroker();
      pusher.OnNotificationSent += pusher_OnNotificationSent;//發(fā)送成功事件
      pusher.OnNotificationFailed += pusher_OnNotificationFailed;//發(fā)送失敗事件
      pusher.OnChannelCreated += pusher_OnChannelCreated;
      pusher.OnChannelDestroyed += pusher_OnChannelDestroyed;
      pusher.OnChannelException += pusher_OnChannelException;
      pusher.OnDeviceSubscriptionChanged += pusher_OnDeviceSubscriptionChanged;
      pusher.OnDeviceSubscriptionExpired += pusher_OnDeviceSubscriptionExpired;
      pusher.OnNotificationRequeue += pusher_OnNotificationRequeue;
      pusher.OnServiceException += pusher_OnServiceException;
      //注冊(cè)推送服務(wù)
      byte[] certificateData = File.ReadAllBytes(@"E:\KenshinCui_Push.p12");
      pusher.RegisterAppleService(new ApplePushChannelSettings(certificateData, "123"));
      foreach (string token in deviceToken)
      {
        //給指定設(shè)備發(fā)送消息
        pusher.QueueNotification(new AppleNotification()
          .ForDeviceToken(token)
          .WithAlert(message) 
          .WithBadge(1)
          .WithSound("default"));
      }
    }

    void pusher_OnServiceException(object sender, Exception error)
    {
      Console.WriteLine("消息發(fā)送失敗，錯(cuò)誤詳情：" + error.ToString());
      PersonalizeMessageBox.Show(this, "消息發(fā)送失敗，錯(cuò)誤詳情：" + error.ToString(), "系統(tǒng)提示");
    }

    void pusher_OnNotificationRequeue(object sender, PushSharp.Core.NotificationRequeueEventArgs e)
    {
      Console.WriteLine("pusher_OnNotificationRequeue");
    }

    void pusher_OnDeviceSubscriptionExpired(object sender, string expiredSubscriptionId, DateTime expirationDateUtc, PushSharp.Core.INotification notification)
    {
      Console.WriteLine("pusher_OnDeviceSubscriptionChanged");
    }

    void pusher_OnDeviceSubscriptionChanged(object sender, string oldSubscriptionId, string newSubscriptionId, PushSharp.Core.INotification notification)
    {
      Console.WriteLine("pusher_OnDeviceSubscriptionChanged");
    }

    void pusher_OnChannelException(object sender, PushSharp.Core.IPushChannel pushChannel, Exception error)
    {
      Console.WriteLine("消息發(fā)送失敗，錯(cuò)誤詳情：" + error.ToString());
      PersonalizeMessageBox.Show(this, "消息發(fā)送失敗，錯(cuò)誤詳情：" + error.ToString(), "系統(tǒng)提示");
    }

    void pusher_OnChannelDestroyed(object sender)
    {
      Console.WriteLine("pusher_OnChannelDestroyed");
    }

    void pusher_OnChannelCreated(object sender, PushSharp.Core.IPushChannel pushChannel)
    {
      Console.WriteLine("pusher_OnChannelCreated");
    }

    void pusher_OnNotificationFailed(object sender, PushSharp.Core.INotification notification, Exception error)
    {
      Console.WriteLine("消息發(fā)送失敗，錯(cuò)誤詳情：" + error.ToString());
      PersonalizeMessageBox.Show(this, "消息發(fā)送失敗，錯(cuò)誤詳情："+error.ToString(), "系統(tǒng)提示");
    }

    void pusher_OnNotificationSent(object sender, PushSharp.Core.INotification notification)
    {
      Console.WriteLine("消息發(fā)送成功！");
      PersonalizeMessageBox.Show(this, "消息發(fā)送成功！", "系統(tǒng)提示");
    }
    #endregion
  }
}

//
// KCMainViewController.m
// NotificationCenter
//
// Created by Kenshin Cui on 14/03/27.
// Copyright (c) 2014年 cmjstudio. All rights reserved.
//

#import "KCMainViewController.h"

@interface KCMainViewController ()

@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [self addObserverToNotificationCenter];
  
}

#pragma mark 添加監(jiān)聽
-(void)addObserverToNotificationCenter{
  /*添加應(yīng)用程序進(jìn)入后臺(tái)監(jiān)聽
   * observer:監(jiān)聽者
   * selector:監(jiān)聽方法（監(jiān)聽者監(jiān)聽到通知后執(zhí)行的方法）
   * name:監(jiān)聽的通知名稱(下面的UIApplicationDidEnterBackgroundNotification是一個(gè)常量)
   * object:通知的發(fā)送者（如果指定nil則監(jiān)聽任何對(duì)象發(fā)送的通知）
   */
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationEnterBackground) name:UIApplicationDidEnterBackgroundNotification object:[UIApplication sharedApplication]];
  
  /* 添加應(yīng)用程序獲得焦點(diǎn)的通知監(jiān)聽
   * name:監(jiān)聽的通知名稱
   * object:通知的發(fā)送者（如果指定nil則監(jiān)聽任何對(duì)象發(fā)送的通知）
   * queue:操作隊(duì)列，如果制定非主隊(duì)線程隊(duì)列則可以異步執(zhí)行block
   * block:監(jiān)聽到通知后執(zhí)行的操作
   */
  NSOperationQueue *operationQueue=[[NSOperationQueue alloc]init];
  [[NSNotificationCenter defaultCenter] addObserverForName:UIApplicationDidBecomeActiveNotification object:[UIApplication sharedApplication] queue:operationQueue usingBlock:^(NSNotification *note) {
    NSLog(@"Application become active.");
  }];
}

#pragma mark 應(yīng)用程序啟動(dòng)監(jiān)聽方法
-(void)applicationEnterBackground{
  NSLog(@"Application enter background.");
}
@end

//
// KCMainViewController.m
// NotificationCenter
//
// Created by Kenshin Cui on 14/03/27
// Copyright (c) 2014年 cmjstudio. All rights reserved.
//

#import "KCMainViewController.h"
#import "KCLoginViewController.h"
#define UPDATE_LGOGIN_INFO_NOTIFICATION @"updateLoginInfo"

@interface KCMainViewController (){
  UILabel *_lbLoginInfo;
  UIButton *_btnLogin;
}

@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [self setupUI];
}

-(void)setupUI{
  UILabel *label =[[UILabel alloc]initWithFrame:CGRectMake(0, 100,320 ,30)];
  label.textAlignment=NSTextAlignmentCenter;
  label.textColor=[UIColor colorWithRed:23/255.0 green:180/255.0 blue:237/255.0 alpha:1];
  _lbLoginInfo=label;
  [self.view addSubview:label];
  
  UIButton *button=[UIButton buttonWithType:UIButtonTypeSystem];
  button.frame=CGRectMake(60, 200, 200, 25);
  [button setTitle:@"登錄" forState:UIControlStateNormal];
  [button addTarget:self action:@selector(loginOut) forControlEvents:UIControlEventTouchUpInside];
  _btnLogin=button;
  
  [self.view addSubview:button];
}

-(void)loginOut{
  //添加監(jiān)聽
  [self addObserverToNotification];
  
  KCLoginViewController *loginController=[[KCLoginViewController alloc]init];
  
  [self presentViewController:loginController animated:YES completion:nil];
}

/**
 * 添加監(jiān)聽
 */
-(void)addObserverToNotification{
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateLoginInfo:) name:UPDATE_LGOGIN_INFO_NOTIFICATION object:nil];
}

/**
 * 更新登錄信息,注意在這里可以獲得通知對(duì)象并且讀取附加信息
 */
-(void)updateLoginInfo:(NSNotification *)notification{
  NSDictionary *userInfo=notification.userInfo;
  _lbLoginInfo.text=userInfo[@"loginInfo"];
  _btnLogin.titleLabel.text=@"注銷";
}

-(void)dealloc{
  //移除監(jiān)聽
  [[NSNotificationCenter defaultCenter] removeObserver:self];
}
@end
登錄界面KCLoginViewController.m：

//
// KCLoginViewController.m
// NotificationCenter
//
// Created by Kenshin Cui on 14/03/27.
// Copyright (c) 2014年 cmjstudio. All rights reserved.
//

#import "KCLoginViewController.h"
#define UPDATE_LGOGIN_INFO_NOTIFICATION @"updateLoginInfo"

@interface KCLoginViewController (){
  UITextField *_txtUserName;
  UITextField *_txtPassword;
}

@end

@implementation KCLoginViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [self setupUI];
}

/**
 * UI布局
 */
-(void)setupUI{
  //用戶名
  UILabel *lbUserName=[[UILabel alloc]initWithFrame:CGRectMake(50, 150, 100, 30)];
  lbUserName.text=@"用戶名：";
  [self.view addSubview:lbUserName];
  
  _txtUserName=[[UITextField alloc]initWithFrame:CGRectMake(120, 150, 150, 30)];
  _txtUserName.borderStyle=UITextBorderStyleRoundedRect;
  [self.view addSubview:_txtUserName];
  
  //密碼
  UILabel *lbPassword=[[UILabel alloc]initWithFrame:CGRectMake(50, 200, 100, 30)];
  lbPassword.text=@"密碼：";
  [self.view addSubview:lbPassword];
  
  _txtPassword=[[UITextField alloc]initWithFrame:CGRectMake(120, 200, 150, 30)];
  _txtPassword.secureTextEntry=YES;
  _txtPassword.borderStyle=UITextBorderStyleRoundedRect;
  [self.view addSubview:_txtPassword];
  
  //登錄按鈕
  UIButton *btnLogin=[UIButton buttonWithType:UIButtonTypeSystem];
  btnLogin.frame=CGRectMake(70, 270, 80, 30);
  [btnLogin setTitle:@"登錄" forState:UIControlStateNormal];
  [self.view addSubview:btnLogin];
  [btnLogin addTarget:self action:@selector(login) forControlEvents:UIControlEventTouchUpInside];
  
  //取消登錄按鈕
  UIButton *btnCancel=[UIButton buttonWithType:UIButtonTypeSystem];
  btnCancel.frame=CGRectMake(170, 270, 80, 30);
  [btnCancel setTitle:@"取消" forState:UIControlStateNormal];
  [self.view addSubview:btnCancel];
  [btnCancel addTarget:self action:@selector(cancel) forControlEvents:UIControlEventTouchUpInside];
}

#pragma mark 登錄操作
-(void)login{
  if ([_txtUserName.text isEqualToString:@"kenshincui"] && [_txtPassword.text isEqualToString:@"123"] ) {
    //發(fā)送通知
    [self postNotification];
    [self dismissViewControllerAnimated:YES completion:nil];
  }else{
    //登錄失敗彈出提示信息
    UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"系統(tǒng)信息" message:@"用戶名或密碼錯(cuò)誤，請(qǐng)重新輸入！" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:nil];
    [alertView show];
  }
  
}

#pragma mark 點(diǎn)擊取消
-(void)cancel{
  [self dismissViewControllerAnimated:YES completion:nil];
}

/**
 * 添加通知，注意這里設(shè)置了附加信息
 */
-(void)postNotification{
  NSDictionary *userInfo=@{@"loginInfo":[NSString stringWithFormat:@"Hello,%@!",_txtUserName.text]};
  NSLog(@"%@",userInfo);
  NSNotification *notification=[NSNotification notificationWithName:UPDATE_LGOGIN_INFO_NOTIFICATION object:self userInfo:userInfo];
  [[NSNotificationCenter defaultCenter] postNotification:notification];
//也可直接采用下面的方法
//  [[NSNotificationCenter defaultCenter] postNotificationName:UPDATE_LGOGIN_INFO_NOTIFICATION object:self userInfo:userInfo];

}
@end