[solved] Flutter Error : No Firebase App ‘[DEFAULT]’ has been created – call Firebase.initializeApp() in Flutter and Firebase

Hello Guys How are you all? hope you all are super fine. well whenever we use a firebase service-related plugin in a flutter project and then we get dependency, almost every developer would face this error Flutter Error: No Firebase App ‘[DEFAULT]’ has been created – call Firebase.initializeApp() in Flutter and Firebase.

I have decided to make all possible solution write down here so it will helpful for you. So without wasting your time lets start this article.

How Flutter Error : No Firebase App ‘[DEFAULT]’ has been created – call Firebase.initializeApp() in Flutter and Firebase error occurs ?

══╡ EXCEPTION CAUGHT BY GESTURE ╞═══════════════════════════════════════════════════════════════════
The following FirebaseException was thrown while handling a gesture:
[core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()

How to solve Flutter Error : No Firebase App ‘[DEFAULT]’ has been created – call Firebase.initializeApp() in Flutter and Firebase ?

Solution 1 : use firebase_core plugin in flutter

Since August 2017 All Firebase service updated so you must have to call Firebase.initializeApp() before using any Firebase product, for example:

We want to use firebase_core plugin in flutter, then our pubspec.yaml file will be same as below.

dependencies:
  flutter:
    sdk: flutter
  firebase_core : ^0.5.0

Then we must have to call Firebase.initializeApp(): in our app. same as like below.

import 'package:firebase_core/firebase_core.dart';

void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await Firebase.initializeApp();
   runApp(MyApp());
}

Solution 2 : call Firebase.initializeApp()

pubspec.yaml

dependencies:
  flutter:
    sdk: flutter
  firebase_core : ^0.5.0

Then we have to call Firebase.initializeApp(): whenever you want to use.

import 'package:flutter/material.dart';

// Import the firebase_core plugin
import 'package:firebase_core/firebase_core.dart';

void main() {
  runApp(App());
}

class App extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return FutureBuilder(
      // Initialize FlutterFire
      future: Firebase.initializeApp(),
      builder: (context, snapshot) {
        return Loading();
      },
    );
  }
}

here Is Git Issue #11351

Summery

So, Guys both solutions are worked for me. let me know in the comment section if it is worked for you as well.

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