firebase auth undefined class 'OAuthProvider'

Question

I'm trying to implement firebase auth with apple this example https://medium.com/@karlwhiteprivate/flutter-firebase-sign-in-with-apple-c99967df142f

but I faced this issue

undefined class 'OAuthProvider'.

in this snippet

OAuthProvider oAuthProvider =
    new OAuthProvider(providerId: "apple.com");
final AuthCredential credential = oAuthProvider.getCredential(
  idToken:
      String.fromCharCodes(appleIdCredential.identityToken),
  accessToken:
      String.fromCharCodes(appleIdCredential.authorizationCode),
);

Solution 1

OAuthProvider provider was recently added to firebase_auth. You need to upgrade the firebase_auth version in your project to the following:

dependencies:
  firebase_auth: ^0.15.3+1

Then do flutter pub get to be able to use the package.

Solution 2

I think right now everyone is dealing with this sign in with apple mandatory.

This two dependencies will make it easier.

dependencies:
    firebase_auth: ^0.15.3+1 
    apple_sign_in: ^0.1.0