Firebase authentication error: Undefined name 'auth'

Question

I would like to acces my firestore databse, by using the UID of each user, like so:

return new StreamBuilder(
    stream: Firestore.instance.collection('users').document(uid).snapshots(),
    builder: (context, snapshot) {
      if (!snapshot.hasData) {
        return new Text("Loading");
      }
      var userDocument = snapshot.data;

And for getting the UID:

final FirebaseUser user = auth.currentUser().then((FirebaseUser user) {
  final userid = user.uid;
});

This but I keep getting the error

Undefined name 'auth'.

Did you initialize the auth variable?

George Rappel
– George Rappel

2019-02-16 14:21:46 +00:00
Commented Feb 16, 2019 at 14:21 — George Rappel
– George Rappel, Commented Feb 16, 2019 at 14:21

George Rappel · Accepted Answer · 2019-02-16 14:36:35Z

5

To use FirebaseAuth in flutter, you must get a reference to such instance. Add this line at the top of your widget/file whenever you need to use Firebase Authentication:

import 'package:firebase_auth/firebase_auth.dart';

FirebaseAuth auth = FirebaseAuth.instance;

Now you can use stuff like auth.currentUser().then(...) like you are doing correctly.

answered Feb 16, 2019 at 14:36

George Rappel

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Comments

Milan Gopani · Accepted Answer · 2023-01-16 09:02:44Z

1

Undefined name 'FirebaseAuth', and not importing library firebase_auth

answered Jan 16, 2023 at 9:02

Milan Gopani

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