CODEWITHSUNDEEP
iosfirebaseswift3firebase-authentication
NicolasM
NicolasM

Reputation: 21

How to keep Firebase Connection on iOS when you close and reopen the app?

I created an iOS app with Firebase. So when I launch the app, it ask me to login or register, so that is what I expected. However I would like to "save" the authenticate because when I close and reopen the app I would like to avoid the login page.

Is it possible for an iOS app built with Firebase to "remember" that the user has already log in even before he closed the app?

Upvotes: 1

Views: 562

Answers (3)

NicolasM
NicolasM

Reputation: 21

Finally thanks to Frank van Puffelen I implemented this code :

override func viewDidAppear(_ animated: Bool) {
    if Auth.auth().currentUser != nil {
        // User is signed in.
        performSegue(withIdentifier: "goToHome", sender: self)
    } else {
        // No user is signed in.
        // ...
    }
}

Because performSegue() does not perform in viewDidLoad()

Upvotes: 0

Frank van Puffelen
Frank van Puffelen

Reputation: 598765

Firebase automatically persists information about the authenticated user. When the user restarts the app, that information is read and (if possible) its authentication state is restored.

To detect this authentication state you'll need to implement an auth state listener as shown in the documentation on getting the currently signed in user:

handle = Auth.auth().addStateDidChangeListener { (auth, user) in
  // ...
}

Upvotes: 0

Pulkit
Pulkit

Reputation: 706

Take a flag login. when you successfully logged in then make it true.login = true and then update your AppDelegate.swift file i.e. if login true then it will show your desired view.

Upvotes: 1

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