[firebase_dynamic_links] Not working on app start

[MaciDE]

Describe the bug
When opening an iOS App from a dynamic link the initialLink is nil.

To Reproduce
Steps to reproduce the behavior:

1. Set up firebase dynamic links for a project as described in the readme.
2. Create a dynamic link (programmatically or via console)
3. Tap on link in non-browser app

Expected behavior
App should open and getInitialLink() should return the correct dynamic link.

Additional context
From my understanding there is an issue when reacting to the incoming UserActivity. onInitialLink is correctly called but returns way earlier than self.initialLink is set in the completion block from [[FIRDynamicLinks dynamicLinks]handleUniversalLink: completion: ] . Therefore on handling the method call FirebaseDynamicLinks#getInitialLink [self getInitialLink] returns nil and because of self.flutterError also being nil the result returns just with nil.

[DanielScholte]

@MaciDE Have you found a way to fix this issue or a workaround?
Currently experiencing this issue myself.

[MaciDE]

@MaciDE Have you found a way to fix this issue or a workaround?
Currently experiencing this issue myself.

Currently, I am calling getInitialLink using a delayed future. It is not working 100%, but at least it is a workaround for now.

PendingDynamicLinkData data;
    
if (Platform.isIOS) {
  await Future.delayed(Duration(seconds: 2), () async {
     data = await FirebaseDynamicLinks.instance.getInitialLink();
  });
} else {
  data = await FirebaseDynamicLinks.instance.getInitialLink();
}

[jherencia]

I've pushed a PR with the fix, can you try? You just need to point to the PR version.

  firebase_dynamic_links:
    git:
      url: https://github.com/mrmilu/flutterfire.git
      path: packages/firebase_dynamic_links
      ref: firebase_dynamic_links-0.5.0+4

[MaciDE]

I've pushed a PR with the fix, can you try? You just need to point to the PR version?

  firebase_dynamic_links:
    git:
      url: https://github.com/mrmilu/flutterfire.git
      path: packages/firebase_dynamic_links
      ref: firebase_dynamic_links-0.5.0+4

I'll try it next week. So far it looks pretty promising :)

[HofmannZ]

@jherencia will test the PR tomorrow.

[HofmannZ]

@jherencia Your PR solves my issues! Been tinkering with this for 3 days straight, thanks so much!

[quetool]

@jherencia I can confirm your PR fix the problem on iOS when app is in "killed state"

[MaciDE]

@jherencia Yep, seems like your PR fixes the issue. Thank you!

[quetool]

I just realize it is not working when app is installed for the first time by touching a dynamic link... getInitialLink() is returning always null. Did anyone solve this?

[HofmannZ]

@quetool did not try it trough the App Store yet

[quetool]

@HofmannZ doesn't matter app store, you can simulate app installation by running the project without the app installed. The steps are...

1. Uninstall app
2. Tap on a dynamic link
3. Wait for App Store to open
4. With App Store opened run your project and wait.

Dynamic link should work after installation (like in Android do)