flutter firebase signup/login using phone number

import 'package:firebase_auth/firebase_auth.dart'; import 'package:google_sign_in/google_sign_in.dart'; final FirebaseAuth _auth = FirebaseAuth.instance; final GoogleSignIn googleSignIn = GoogleSignIn(); Future<String> signInWithGoogle() async { final GoogleSignInAccount googleSignInAccount = await googleSignIn.signIn(); final GoogleSignInAuthentication googleSignInAuthentication = await googleSignInAccount.authentication; final AuthCredential credential = GoogleAuthProvider.getCredential( accessToken: googleSignInAuthentication.accessToken, idToken: googleSignInAuthentication.idToken, ); final AuthResult authResult = await _auth.signInWithCredential(credential); final FirebaseUser user = authResult.user; assert(!user.isAnonymous); assert(await user.getIdToken() != null); final FirebaseUser currentUser = await _auth.currentUser(); assert(user.uid == currentUser.uid); return 'signInWithGoogle succeeded: $user'; } void signOutGoogle() async{ await googleSignIn.signOut(); print("User Sign Out"); }

phone authentication firebase flutter

Future<void> _submitPhoneNumber() async {
    /// NOTE: Either append your phone number country code or add in the code itself
    /// Since I'm in India we use "+91 " as prefix `phoneNumber`
    String phoneNumber = "+91 " + _phoneNumberController.text.toString().trim();
    print(phoneNumber);

    /// The below functions are the callbacks, separated so as to make code more readable
    void verificationCompleted(AuthCredential phoneAuthCredential) {
      print('verificationCompleted');
      ...
      this._phoneAuthCredential = phoneAuthCredential;
      print(phoneAuthCredential);
    }

    void verificationFailed(AuthException error) {
      ...
      print(error);
    }

    void codeSent(String verificationId, [int code]) {
      ...
      print('codeSent');
    }

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

    await FirebaseAuth.instance.verifyPhoneNumber(
      /// Make sure to prefix with your country code
      phoneNumber: phoneNumber,

      /// `seconds` didn't work. The underlying implementation code only reads in `milliseconds`
      timeout: Duration(milliseconds: 10000),

      /// If the SIM (with phoneNumber) is in the current device this function is called.
      /// This function gives `AuthCredential`. Moreover `login` function can be called from this callback
      verificationCompleted: verificationCompleted,

      /// Called when the verification is failed
      verificationFailed: verificationFailed,

      /// This is called after the OTP is sent. Gives a `verificationId` and `code`
      codeSent: codeSent,

      /// After automatic code retrival `tmeout` this function is called
      codeAutoRetrievalTimeout: codeAutoRetrievalTimeout,
    ); // All the callbacks are above
  }

Posted by: Guest on November-28-2020

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