Undefined class 'FirebaseUser'
Solution 1
Starting from Version firebase_auth
0.18.0:
In the newest version of firebase_auth
, the class FirebaseUser
was changed to User
, and the class AuthResult
was changed to UserCredential
. Therefore change your code to the following:
Future<User> currentUser() async {
final GoogleSignInAccount account = await googleSignIn.signIn();
final GoogleSignInAuthentication authentication =
await account.authentication;
final GoogleAuthCredential credential = GoogleAuthProvider.credential(
idToken: authentication.idToken,
accessToken: authentication.accessToken);
final UserCredential authResult =
await _auth.signInWithCredential(credential);
final User user = authResult.user;
return user;
}
FirebaseUser
changed to User
AuthResult
changed to UserCredential
GoogleAuthProvider.getCredential()
changed to GoogleAuthProvider.credential()
onAuthStateChanged
which notifies about changes to the user's sign-in state was replaced with authStateChanges()
currentUser()
which is a method to retrieve the currently logged in user, was replaced with the property currentUser
and it no longer returns a Future<FirebaseUser>
.
Example of the above two methods:
FirebaseAuth.instance.authStateChanges().listen((event) {
print(event.email);
});
And:
var user = FirebaseAuth.instance.currentUser;
print(user.uid);
Deprecation of UserUpdateInfo
class for firebaseUser.updateProfile
method.
Example:
Future updateName(String name, FirebaseUser user) async {
var userUpdateInfo = new UserUpdateInfo();
userUpdateInfo.displayName = name;
await user.updateProfile(userUpdateInfo);
await user.reload();
}
now
import 'package:firebase_auth/firebase_auth.dart' as firebaseAuth;
Future updateName(String name, auth.User firebaseUser) async {
firebaseUser.updateProfile(displayName: name);
await firebaseUser.reload();
}
Solution 2
Since firebase_auth 0.18.0
, the class FirebaseUser
was changed to User
Solution 3
The class FirebaseUser was changed to User
try this way
_registerUser() async {
try {
final User? user =
(await FirebaseAuth.instance.signInWithEmailAndPassword(
email: emailCtrl.text,
password: passCtrl.text,
))
.user;
FirebaseFirestore.instance.collection('users').doc().set({
'name': nameCtrl.text,
'uid': user!.uid,
'email': user.email,
'isEmailVerified': user.emailVerified, // will also be false
'photoUrl': user.photoURL, // will always be null
});
print("Created");
} catch (e) {
print(e.toString());
}
}
Solution 4
In the newest version of firebase_auth, the class FirebaseUser was changed to User, and the class AuthResult was changed to UserCredentail. Therefore change FirebaseUser to User
Solution 5
Run
flutter pub get
Then rebuild your app.
AbdullahTh
Updated on November 30, 2021Comments
-
AbdullahTh over 2 years
I'm new to Flutter. I have an Issue with Firebase Auth/ Google Auth The FirebaseUser is not defined Code:
FirebaseAuth _auth = FirebaseAuth.instance; GoogleSignIn googleSignIn = GoogleSignIn(); Future<FirebaseUser> currentUser() async { // The Issue is here in the Future<> final GoogleSignInAccount account = await googleSignIn.signIn(); final GoogleSignInAuthentication authentication = await account.authentication; final GoogleAuthCredential credential = GoogleAuthProvider.getCredential( idToken: authentication.idToken, accessToken: authentication.accessToken); final AuthResult authResult = await _auth.signInWithCredential(credential); final FirebaseUser user = authResult.user; // and here as I can't define this FirebaseUser object to return return user; }
Pubspec.yml
dependencies: flutter: sdk: flutter cupertino_icons: ^0.1.3 firebase_auth: ^0.18.0 location: ^3.0.2 page_transition: ^1.1.6 google_sign_in: ^4.5.1 flutter_facebook_login: ^3.0.0 firebase_database: ^4.0.0
I also face the same issue with AuthResult
final AuthResult authResult = await _auth.signInWithCredential(credential);