Get push notification while App in foreground iOS

Question

I am using push notification service in my app. When app is in background I am able to see notification on notification screen(screen shown when we swipe down from top of iOS device). But if application is in foreground the delegate method

- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo

is getting called but notification is not displayed in notification screen.

I want to show notification on notification screen independent of whether app is in background or foreground. I am tired by searching for a solution. Any help is greatly appreciated.

Answer 1

For displaying banner message while app is in foreground, use the following method.

iOS 10, Swift 3/4 :

// This method will be called when app received push notifications in foreground
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) 
{
    completionHandler([.alert, .badge, .sound])
}

iOS 10, Swift 2.3 :

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

You must also register your app delegate as the delegate for the notifications center:

import UserNotifications

// snip!

class AppDelegate : UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate

// snip!

   func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

      // set the delegate in didFinishLaunchingWithOptions
      UNUserNotificationCenter.current().delegate = self
      ...
   }