[Bug]: Duplicate notifications occur when using an additional SDK, and foregroundWillDisplay does not fire with notifications from sources outside of OneSignal.

[marcin-piela-800]

[Bug]: Duplicate notifications occur when using an additional SDK, and foregroundWillDisplay does not fire with notifications from sources outside of OneSignal.

[jennantilla]

Hi @marcin-piela-800 thanks for reaching out! Just to make sure I understand, only the notifications from the other push provider display? If so, that is what I would expect as our methods are meant to handle OneSignal notifications.

I'll look a bit deeper at the logic and see if there is anything we can tweak to handle notifications not coming from OneSignal.

Thanks

[marcin-piela-800]

I implemented the following method in AppDelegate.mm:

- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {
  NSDictionary *userInfo = notification.request.content.userInfo;
  NSString *customValue = userInfo[@"custom"]; // Added only by OneSignal
  
  if (customValue != nil) {
      completionHandler(UNNotificationPresentationOptionAlert | UNNotificationPresentationOptionBadge | UNNotificationPresentationOptionSound);
  } else {
      completionHandler(UNNotificationPresentationOptionNone);
  }
}

Now, I'm able to prevent notifications (other than OneSignal notifications) from being displayed when the app is in the focused state.

The problem is that it's not default behavior to show all notifications when app is focused, it's added by OneSignal so I would expect to be able to do smth with it using JS code (listener from OneSignal package)