[firebase auth] FirebaseUser.reauthenticateWithCredential finished with NoSuchMethodError exception

[hungnt-kayac]

plugin version:

firebase_core: ^0.4.0+9
firebase_auth: ^0.14.0+5

here is the screenshot

[BondarenkoStas]

@hungnt-kayac Please provide a small self-contained app that demonstrates the problem. You can include small examples inline if they're enclosed by backticks, or just provide a public link to a github "gist" - https://gist.github.com/.
It's extremely tedious to reproduce the issue having code on a screenshot, as we would have to manually transcribe your example.

[hungnt-kayac]

@BondarenkoStas
i created a sample app here
https://github.com/nguyentuanhung/flutter_firebase_sample
(for some reason, i don't push the whole flutter project, just lib folder and pubspec.yaml file)

In this example, i login via email, password and then try to reauthenticate with provided email and password

[fabriziocacicia]

I have the same problem. But my situation is different.
I have an anonymous user that should be converted to an "email and password" one. By using linkWithCredential() and reauthenticateWithCredential() i encounter the same error as hungnt-kayac

[alexZaicev]

I experience the same problem, when I try to re-authenticate user it throw exception:

NoSuchMethodError: The method '[]' was called on null. Receiver: null Tried calling: []("user")

[pawlowskim]

Same here.

  Future<AuthResult> reAuthenticate(String email, String password) {
    return getFirebaseUser().then((FirebaseUser user) {
      AuthCredential credential =
          EmailAuthProvider.getCredential(email: email, password: password);
      return user.reauthenticateWithCredential(credential);
    });
  }

If password is correct it throws:

I/flutter (14968): Error: NoSuchMethodError: The method '[]' was called on null
I/flutter (14968): Receiver: null
I/flutter (14968): Tried calling: []("user")

If password is incorrect it returns error (expected):

flutter: PlatformException(ERROR_WRONG_PASSWORD, The password is invalid or the user does not have a password., null)

[fabriziocacicia]

@pawlowskim I've done a PR (#237) that should fix this error. I'm waiting for the code review.