iOS Local Notification學習筆記

做了很多有Push Notification和Locale Notification的app，來整理下開發的筆記。今天先說說Local Notification

在iOS4.0後Apple加入了Local Notification。這裏是NSLocaleNotification的Class Reference http://developer.apple.com/library/ios/#documentation/iPhone/Reference/UILocalNotification_Class/Reference/Reference.html

如何註冊一個Notification

UILocalNotification *localNotification = [[UILocalNotification alloc] init];

// 設置notification的屬性
localNotification.fireDate = [startTimePicker.picker.date dateByAddingTimeInterval:36000]; //出發時間
localNotification.alertBody = @"Time To Schedule Our Service"; // 消息內容
localNotification.repeatInterval = NSSecondCalendarUnit; // 重複的時間間隔
localNotification.soundName = UILocalNotificationDefaultSoundName; // 觸發消息時播放的聲音
localNotification.applicationIconBadgeNumber = 1; //應用程序Badge數目

//設置隨Notification傳遞的參數
NSDictionary *infoDict = [NSDictionary dictionaryWithObjectsAndKeys:@"reminder", @"notificationId", @"phone", txtPhone.text, nil];
localNotification.userInfo = infoDict;
    
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; //註冊
[localNotification release]; //釋放

遍歷已經註冊的所有LocaleNotification

    NSArray *notifications = [[UIApplication sharedApplication] scheduledLocalNotifications];
    for (UILocalNotification *notification in notifications ) {
        if( [[notification.userInfo objectForKey:@"source"] isEqualToString:@"dailyReminder"] ) {
            [[UIApplication sharedApplication] cancelLocalNotification:notification];
            break;
        }
    }

撤銷LocaleNotification

[[UIApplication sharedApplication] cancelAllLocalNotifications]; // 撤銷所有的Notification

[[UIApplication sharedApplication] cancelLocalNotification:notification]; // 撤銷某個Notificiation，若要刪除某個特定的Notification，則可以在UserInfo中加入標記，遍歷所有的Notification來刪除。

響應事件

當Notification被觸發後，你的應用需要對此作出反應。應用此時可能會處於以下幾個狀態：

• 在前臺運行 - 當應用在前臺運行時，則ApplicationDelegate的didReceiveLocalNotification會被調用。

  - (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
      NSLog(@"Notification Body: %@", notification.alertBody);
      NSLog(@"%@", notification.userInfo);
      application.applicationIconBadgeNumber = notification.applicationIconBadgeNumber-1;
  }

  
  
• 在後臺運行 - 用戶可以看到類似Push Notification的提醒，若用戶選擇查看提醒詳情，則應用通過 ApplicationDelegate的didFinishLaunchingWithOptions進入
  

  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
      UILocalNotification *localNotification =
      [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
      if (localNotification) {
          NSLog(@"Notification Body: %@",localNotification.alertBody);
          NSLog(@"%@", localNotification.userInfo);
          application.applicationIconBadgeNumber = localNotification.applicationIconBadgeNumber-1;
      }
      // set up everything else
      return YES;
  

  }