UCAppDelegate (Notifications)

- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings {

    if( SYSTEM_VERSION_LESS_THAN( @"10.0" ) ) {

        [[UIApplication sharedApplication] registerForRemoteNotifications];

    } else {

        UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
        center.delegate = self;
        [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error)
         {
             if( !error ) {
                 [[UIApplication sharedApplication] registerForRemoteNotifications];  // required to get the app to do anything at all about push notifications
              } else {
                 NSLog( @"Push registration FAILED" );
                 NSLog( @"ERROR: %@ - %@", error.localizedFailureReason, error.localizedDescription );
                 NSLog( @"SUGGESTIONS: %@ - %@", error.localizedRecoveryOptions, error.localizedRecoverySuggestion );
             }
         }];
    }
}