CODEWITHSUNDEEP
flutterdartoopflutter-cubit
Mustafa Adel
Mustafa Adel

Reputation: 71

Flutter Late variable throwing LateInitializationError even after assigning a value in a function in class

I am doing phone authentication using firebase in flutter and I have defined a late variable called verification id so that when the otp is sent it is initialized by it's value and i can use it later, but it is always null why is that?

This is my cubit:

import 'package:bloc/bloc.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:meta/meta.dart';

part 'phone_auth_state.dart';

class PhoneAuthCubit extends Cubit<PhoneAuthState> {
  late String verificationId;

  PhoneAuthCubit() : super(PhoneAuthInitial());

  Future<void> submitPhoneNumber(String phoneNumber) async {
    emit(PhoneAuthLoading());

    await FirebaseAuth.instance.verifyPhoneNumber(
      phoneNumber: '$phoneNumber',
      timeout: const Duration(seconds: 14),
      verificationCompleted: verificationCompleted,
      verificationFailed: verificationFailed,
      codeSent: codeSent,
      codeAutoRetrievalTimeout: codeAutoRetrievalTimeout,
    );
  }

  void verificationCompleted(PhoneAuthCredential credential) async {
    print('verificationCompleted');
    await signIn(credential);
  }

  void verificationFailed(FirebaseAuthException error) {
    print('verificationFailed : ${error.toString()}');
    emit(PhoneAuthFailure(errorMessage: error.toString()));
  }

  void codeSent(String verificationId, int? resendToken) {
    print('codeSent');
    this.verificationId = verificationId;
    emit(PhoneNumberSubmitted());
    print("khlst code sent");
  }

  void codeAutoRetrievalTimeout(String verificationId) {
    print('codeAutoRetrievalTimeout');
  }

  Future<void> submitOTP(String otpCode) async { 
    PhoneAuthCredential credential = PhoneAuthProvider.credential(
        verificationId: this.verificationId, smsCode: otpCode);

    await signIn(credential);
  }

  Future<void> signIn(PhoneAuthCredential credential) async {
    try {
      await FirebaseAuth.instance.signInWithCredential(credential);
      emit(PhoneOTPVerified());
    } catch (error) {
      emit(PhoneAuthFailure(errorMessage: error.toString()));
    }
  }

  Future<void> signOut() async {
    await FirebaseAuth.instance.signOut();
  }

  User getLoggedInUser() {
    User firebaseUser = FirebaseAuth.instance.currentUser!;
    return firebaseUser;
  }
}

The error is thrown in function submitOTP

Upvotes: 0

Views: 49

Answers (1)

Sailesh Dahal
Sailesh Dahal

Reputation: 321

Try assigning the verificationId on codeAutoRetrievalTimeout:

codeAutoRetrievalTimeout: (verificationId)=> this.verificationId = verificationId

Upvotes: 0

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