Flutter + Firebase | java.lang.IllegalStateException: FirebaseApp with name [DEFAULT] doesn't exist

Question

I am trying to complete a very simple exercise by connecting my basic Flutter app to Cloud Firestore (in Firebase).

I have followed the instructions with regards to setup. However, I am getting the following error.

E/MethodChannel#plugins.flutter.io/cloud_firestore(13217): Failed to handle method call
E/MethodChannel#plugins.flutter.io/cloud_firestore(13217): java.lang.IllegalStateException: FirebaseApp with name [DEFAULT] doesn't exist.

My flutter code:

import 'package:flutter/material.dart';
import 'package:cloud_firestore/cloud_firestore.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'Playground',
        home: Scaffold(
            appBar: AppBar(
              title: Text('Playground App'),
            ),
            body: Column(children: <Widget>[
              Text('Sup World?'),
            StreamBuilder(
              stream: Firestore.instance.collection('test').snapshots(),
              builder: (context, snapshot) {
                if (!snapshot.hasData) return const Text('Loading....');

                return Text('Loaded');
              },
            )
            ])));
  }
}

Dependencies in the android\build.gradle file

dependencies {
    classpath 'com.android.tools.build:gradle:3.3.1'
    classpath 'com.google.gms:google-services:4.0.1'
}

Dependencies and new lines added in the android\app\build.gradle file

dependencies {
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.google.firebase:firebase-core:16.0.1'
}

apply plugin: 'com.google.gms.google-services'

Dependencies in the pubspec.yaml

dependencies:
  flutter:
    sdk: flutter
  intl: 0.15.7
  cloud_firestore: ^0.8.2

I've also downloaded and added the google-services.json file to the android\app folder.

In the Firestore db, I have a collection with id test containing one document.

Expected result: The text "Loaded" should appear under the text "Sup World?"

However, I am getting the above error and it's showing the text "Loading".

Could someone help in getting this resolved please?

It would be nice if you add pubspec file also such that we can know whether have you added firebase plugin in flutter pubspec.yaml!! And cross check whether you have added classpath 'com.google.gms:google-services:3.0.0' in your project level gradle. — Harsha pulikollu
– Harsha pulikollu, Commented Feb 15, 2019 at 12:27
@Harshapulikollu - i have updated the thread with the dependencies from the pubspec.yaml file. — Santhosh Jose
– Santhosh Jose, Commented Feb 15, 2019 at 14:09
@Harshapulikollu - regarding project level gradle, do you mean a gradle file at the flutter project level? I don't have one in mine. — Santhosh Jose
– Santhosh Jose, Commented Feb 15, 2019 at 14:10
I mean in your android project level. <flutter project>/android/build.gradle file — Harsha pulikollu
– Harsha pulikollu, Commented Feb 15, 2019 at 14:24
@Harshapulikollu - yes its in there. I have added it already above. Putting it here again in case it helps: dependencies { classpath 'com.android.tools.build:gradle:3.3.1' classpath 'com.google.gms:google-services:4.0.1' } — Santhosh Jose
– Santhosh Jose, Commented Feb 15, 2019 at 14:39

Santhosh Jose · Accepted Answer · 2019-02-15 16:16:45Z

2

I had posted this on GitHub as well. Running flutter clean on the project and then running the app again fixed it for me.

The url to the GitHub issue. https://github.com/flutter/flutter/issues/28003

answered Feb 15, 2019 at 16:16

Santhosh Jose

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Comments

M. Noreikis · Accepted Answer · 2019-09-24 11:40:22Z

0

I got this error when I updated to newer google-services.

Switched back to classpath 'com.google.gms:google-services:3.2.1' and it started working fine.

answered Sep 24, 2019 at 11:40

M. Noreikis

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