Sign In with Google documentation is outdated.

[abrahamcft360]

Code: Future signInWithGoogle() async {
try {

  const webClientId = 'xxxxx';
  const iosClientId = 'xxxxx';


  final GoogleSignIn googleSignIn = GoogleSignIn(
    clientId: iosClientId,
    serverClientId: webClientId,
  );
  final googleUser = await googleSignIn.signIn();
  final googleAuth = await googleUser!.authentication;
  final accessToken = googleAuth.accessToken;
  final idToken = googleAuth.idToken;

  if (accessToken == null) {
    throw 'No Access Token found.';
  }
  if (idToken == null) {
    throw 'No ID Token found.';
  }

  final response = await client.auth.signInWithIdToken(
    provider: OAuthProvider.google,
    idToken: idToken,
    accessToken: accessToken,
  );

  if (response.user != null) {
    return await _handleSocialSignIn(user: response.user!, authMethod: 'google');
  } else {
    return AuthResult.error('Google sign-in failed. Please try again.');
  }
} on AuthException catch (e) {
  log('❌ AuthException during Google Sign-In: ${e.message}');
  return AuthResult.error('Could not sign in with Google. ${e.message}');
} on Exception catch (e) {
  log('❌ General Exception during Google Sign-In: $e');
  return AuthResult.error(
    'An unexpected error occurred. Please try again.',
  );
}

}

---

Getting exceptions like:

1. The class 'GoogleSignIn' doesn't have an unnamed constructor.
   Try using one of the named constructors defined in 'GoogleSignIn'.

2. The method 'signIn' isn't defined for the type 'GoogleSignIn'.
   Try correcting the name to the name of an existing method, or defining a method named 'signIn'.