iOS Swift Receive Push Notification When App in Foreground

Question

Here is the code that I have used to receive push Notification when app in foreground

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, willPresentNotification notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void)
{
     completionHandler([UNNotificationPresentationOptions.Alert,UNNotificationPresentationOptions.Sound,UNNotificationPresentationOptions.Badge])
}

But my problem is that my notification contains [NSObject : AnyObject] values. How to receive like background notification

Dextrous

Do you want to access user info from Notification object? – Kathe

@iOS_devloper yes sir – Dextrous

I am using "notification.request.content.userInfo" to get data. You can print this in above method. – Windburn

You can use notification.request.content.userInfo – Kathe

@iOS_devloper If it solved the post, you should add that in as the answer (plus a few more details if you have them). Cheers! – Parachronism

@Parachronism Thanks! Posted. – Kathe

Answer 1

Add this code in AppDelegate.swift file.

@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
{
    completionHandler([UNNotificationPresentationOptions.alert,UNNotificationPresentationOptions.sound,UNNotificationPresentationOptions.badge])
}

Dextrous

how to write this in iOS 8.0 @Kavin Kumar Arumugam – Topsail

@DilipTiwari there is no changes in above code, it already supports iOS 8.0 – Dextrous

ok so it will show notification in foreground also @Kavin Kumar Arumugam ? – Topsail

can you tell me your firebase version @DilipTiwari – Dextrous

i m receiving in ios 10 but not in ios 8 @Kavin Kumar Arumugam – Topsail

can we talk in a group chat @kavin kumar arumugam – Topsail

this is my code paste.ofcode.org/a3fEwUmYi7bQPYG7WHHgjA @Kavin Kumar Arumugam – Topsail

Little busy now will see and update your code by evening @DilipTiwari – Dextrous

Let us continue this discussion in chat. – Topsail

Answer 2

 func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {

   if (application.applicationState == 0) // active --- forground
    {
       // publish your notification message
    }

}

Racism

Answer 3

your app won't be able to run any code unless the user open the push notification, push notifications are handled by the OS and your app have no control on them while it's not active or in the background you should take a look https://developer.apple.com/library/content/documentation/Performance/Conceptual/EnergyGuide-iOS/OptimizeVoIP.html

Bortman

Answer 4

UNNOtification has property request (UNNotificationRequest), you can use that to get user info.

use following to access user info from UNNotification:

let userinfo =  notification.request.content.userInfo

Kathe

Answer 5

  func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void)
{
    debugPrint("Received when is visible... :): \(userInfo)")
    

    guard let aps = userInfo["aps"] as? [String: AnyObject] else {
        completionHandler(.failed)
        return
      }
    
    let alert:Dictionary<String,String> = aps["alert"] as! Dictionary<String,String>

    let title:String = alert["title"]!
    let msg:String   = alert["body"]!
    
  
    let refreshAlert = UIAlertController(title: title, message: msg, preferredStyle: UIAlertController.Style.alert)
    
    refreshAlert.addAction(UIAlertAction(title: "Ok", style: .default, handler: { (action: UIAlertAction!) in
         
        refreshAlert.dismiss(animated: true, completion: nil)
      
    }))


    UIApplication.shared.windows.first!.rootViewController?.present(refreshAlert, animated: true, completion: nil)
 
}

Mortenson