There are many ways of keeping user signed-in to a flutter application. In this tutorial we going to use firebase Auth method authStateChanges(). Firebase Auth enables you to subscribe in realtime to this state via a Stream .
Read moreHow do you check if user is logged in Firebase react?
“firebase auth check if user is logged in” Code Answer
Read moreHow do I know if a user is logged in or not in Flutter?
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Read moreIs user logged in Firebase?
You can easily detect if the user is logged or not by executing: var user = firebase . auth().
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