Question 287468 in Flutter Question posted in
The official Flutter documentation can be found here.

Unable to convert firebase anonymous user to permanent in Flutter App

I am trying to convert a firebase user from Anonymous to permanent using email/password and running into errors.

The documentation and other articles state that I should linkWithProvider but it throws an exception that the email should be verified first, however, doing so throws another exception asking me to login first.

Here are snippets of what I tried so far

final emailAuthCredential = EmailAuthProvider.credential(
  email: email,
  password: password,
);

await currentUser.linkWithProvider(emailAuthCredential);

FirebaseAuthException ([firebase_auth/operation-not-allowed] Please verify the new email before changing email.)

final emailAuthCredential = EmailAuthProvider.credential(
  email: email,
  password: password,
);

await currentUser.verifyBeforeUpdateEmail(email);

FirebaseAuthException ([firebase_auth/requires-recent-login] This operation is sensitive and requires recent authentication. Log in again before retrying this request.)

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    The solution was in the documentation (duh...). You now have to use the identity platform API and call signup with the anonymous token.


  2. 0

    You can use this code

    linkUser()async{
User? user = FirebaseAuth.instance.currentUser;

if (user != null && user.isAnonymous) {
  try {
    // Prompt the user to enter their email and password
    String email = '[email protected]'; // Replace with the user's input
    String password = 'password123';   // Replace with the user's input

    // Link the user to the email and password provider
    AuthCredential credential = EmailAuthProvider.credential(
      email: email,
      password: password,
    );
    await user.linkWithCredential(credential);

    // Now, the user is converted to a permanent user with email and password
  } catch (e) {
    print('Error linking anonymous user: $e');
  }
}

    }

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