How can I store Push Notification alert message in UserDefault?

Question

I want to build an app that I can receive push notification and save inside client device for limit 25 Notification. If application running and may not running. How can I stored PushNotification alert message?. If app running that time arrived Notification alert message stored in UserDefault but when app in background or Inactive state that time not stored Notification alert message in UserDefault. I want to know that I need to use UserDefault or CoreData to store the Push Notification message inside client app or not? If it is not, what should I use? I really need a hand to pick me up.

Please Help. Thanks.

You cannot process the push notification without open it. My advise, keep the notifications send to each devices on your server instead — xmhafiz
@h44f33z any other way can i stored arrived notification in UserDefualt or CoreDate? — iParesh
For me, its not about "where" to save it, but the issue here is you cannot check the push notification unless you open the received notification. Also, if you open one of three notifications(let say), you only can get the one that you opened, the rest wont get the contents — xmhafiz
check this stackoverflow.com/questions/17067955/… and this one stackoverflow.com/questions/8137304/… — xmhafiz

Amanpreet Amanpreet · Accepted Answer · 2016-12-08T11:04:38

STEP 1:

 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool
     {
         requestUserPermissions(application: application)
         if let notification = launchOptions?[UIApplicationLaunchOptionsKey.remoteNotification] as? [String: AnyObject]
            {
                let info : NSDictionary! = notification as NSDictionary
                if info != nil
                {
                    getDataFromNotification(userInfo: info as! [AnyHashable : Any])
                    Alert.showAlert((self.window?.rootViewController)!, message: "App is terminated", strtitle: "Notification")
                }
            }
            return true
    }

STEP 2:

func requestUserPermissions(application: UIApplication)
    {
        if #available(iOS 10.0, *)
        {
            let center = UNUserNotificationCenter.current()
            center.delegate = self
            center.requestAuthorization(options:[.badge, .alert, .sound])
            {
                (granted, error) in

                if( !(error != nil) )
                {
                    application.registerForRemoteNotifications()
                }
                // Enable or disable features based on authorization.
            }

        }
        else {
            // Fallback on earlier versions
            if (!application.isRegisteredForRemoteNotifications)
            {
                application.applicationIconBadgeNumber = 0
                application.registerForRemoteNotifications()
            }
        }

STEP 3:

@objc(userNotificationCenter:didReceiveNotificationResponse:withCompletionHandler:) @available(iOS 10.0, *)
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void)
 {

       print("Userinfo1 \(response.notification.request.content.userInfo)")
        getDataFromNotification(userInfo: response.notification.request.content.userInfo)
        Alert.showAlert((self.window?.rootViewController)!, message: "I am in Background", strtitle: "Notification")
    }
      @objc(userNotificationCenter:willPresentNotification:withCompletionHandler:) @available(iOS 10.0, *)
        func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
        {
           print("Userinfo2 \(notification.request.content.userInfo)")
            getDataFromNotification(userInfo: notification.request.content.userInfo)
            Alert.showAlert((self.window?.rootViewController)!, message: "I am in forground", strtitle: "Notification")
        }

STEP 4:

func getDataFromNotification(userInfo: [AnyHashable : Any])
    {
        let info : NSDictionary! = userInfo as NSDictionary

        if info != nil
        {
            if let aps = info["aps"] as? NSDictionary
            {
               if let resultsDict =  aps as? [String:AnyObject]
             {
                for _ in resultsDict
               {
                let str = dictCleanData.value(forKey: "alert")!
                let time = dictCleanData.value(forKey: "day")!

                let dict = ["msg" : str, "time": time]

                UserDefaults.standard.set(dict, forKey: "dict")
                UserDefaults.standard.synchronize()

                  }
             }
           }
     }
}

STEP 5: TO check saved data on Other view controller

 override func viewDidLoad()
 {
        super.viewDidLoad()

           if UserDefaults.standard.value(forKey: "dict") != nil
          {
             let dict : NSDictionary = UserDefaults.standard.value(forKey: "dict") as! NSDictionary

               arr_Veges.add(dict)

               if  UserDefaults.standard.value(forKey: "arr_Veges") != nil
               {
                  let arr = UserDefaults.standard.value(forKey: "arr_Veges") as! NSArray

                  for oldObj in arr
                  {
                    arr_Veges.add(oldObj)
                  }
               }

               UserDefaults.standard.set(arr_Veges, forKey: "arr_Veges")
               UserDefaults.standard.synchronize()
        }
}

How can I store Push Notification alert message in UserDefault?

2 Answers