User not signed into Firebase in Share App Extension

Question

I am making some API Firebase calls (download some user specific data) in my app share extension but the user is not signed into Firebase (aka currentUser is ni

Answer 1

The existing answers did not fix it for me, but I did find this official FireBase documentation.

In summary, the fix was using the app groups capability with same identifier in the app and extension.

Then including the code:

do {
  try Auth.auth().useUserAccessGroup("TEAMID.com.example.group1")
} catch let error as NSError {
  print("Error changing user access group: %@", error)
}

In my tests the authenticated user has the same uid in the main app and the share extension.

HTH