In Flutter, how to properly handle authentication?

I am using firebase for authentication. I listen in a StreamBuilder for authStateChanges():

• if user is null, I return LoginPage.
• if user is not null, I show HomePage. On HomePage, I can go to AnotherPage by pressing a button, doing Navigator.of(context).push(...). Thing is, if I logout after this, this AnotherPage stays on stack so I have to manually press back to show LoginScreen.

I have tried using Navigator.pop, on logout, but this feels like a hack. What if I have multiple pages on the stack?

You are handling the auth correctly.

The issue could be in your navigation there are three possibilities:

I: If you are using named routes you can use:

Navigator.popUntil(context, (route) => route.settings.name == '/home');

II: If you are using not using named routes: Check out this answer: Flutter Navigation pop to index 1

Navigator.of(context).popUntil((route) => route.isFirst);

/!\ For the two first methods, call these function when detecting a logout action.

III: Use a package to help you manage the Navigation