itsbohara

method 1 .
  this.afs.doc('collectionName/documentId').ref.get().then((documentSnapshot) => {
    console.log(documentSnapshot.exists);
  });

method 2
  this.afs.firestore.doc('collectionName/documentId').get().then((documentSnapshot) => {
    console.log(documentSnapshot.exists);
  });

itsbohara

// / /... .. . //
  final FirebaseAuth _auth = FirebaseAuth.instance;

  Future<String> signInWithGoogle() async {
    try{
      final GoogleSignIn _googleSignIn = new GoogleSignIn();
      GoogleSignInAccount googleUser = await _googleSignIn.signIn();

      GoogleSignInAuthentication googleAuth = await googleUser.authentication;
      final AuthCredential credential = GoogleAuthProvider.getCredential(

itsbohara

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      initialRoute: '/login',
      onGenerateRoute: generateRoute,
      title: 'Test App',
    );
  }

itsbohara

/**
* Author: MB
**/
import 'package:flutter/material.dart';
class MyClass extends StatefulWidget {

  @override
  _MyClassState createState() => _MyClassState();
}