[Bug]: Push Notifications Not Opening App When Closed

[bahadirkalay]

Description:
I am experiencing an issue with push notifications in my Flutter application. When the app is closed, tapping on a push notification does not open the app or navigate to the specified page. Here are the details:
Platform:Andoid, IOS
Flutter Version: 3.19.0
OneSignal SDK Version: 5.1.2
Expected Behavior: When a push notification is tapped, the app should open and navigate to the specified route or page.
Actual Behavior: Tapping on a push notification does not open the app when it is closed.

 void _handleNotificationClick(OSNotificationClickEvent event) async {
    String? deepLink = event.notification.launchUrl;
    String? route = event.notification.additionalData?['route'];
    if (deepLink != null && deepLink.isNotEmpty) {
      Uri url = Uri.parse(deepLink);
      if (await canLaunchUrl(url)) {
        await launchUrl(url, mode: LaunchMode.externalApplication);
      }
    } else if (route != null && route.isNotEmpty) {
      if (navigatorKey.currentState != null) {
        navigatorKey.currentState?.pushNamed(route);
      }
    }
  }

Steps to reproduce?

1:Close the app completely.
2:Send a push notification with a deep link or route.
3:Tap on the notification.
4:Observe that the app does not open or navigate to the intended page.

What did you expect to happen?

I expected the app to open and navigate to the specified page when I tap on a push notification, even if the app is closed.

OneSignal Flutter SDK version

5.1.2

Which platform(s) are affected?

• iOS
• Android

Relevant log output

Code of Conduct

• I agree to follow this project's Code of Conduct

[nan-li]

Hi @bahadirkalay, is this an issue with the push notification and OneSignal SDK, or is this an issue with your custom navigation?

If you don't use this _handleNotificationClick method, and click on a notification with or without a launch URL, does your app open?