如何让我的 Google-service.json 在 Google Cloud Plataform 中与 Firestore 一起使用？

Question

I'm using the google cloud platform to make my system. Inside of it has a Firestore system, that use the same API and packages that the outside (outside of the Google Cloud Platform) use.

I know that using the outside one you can generate a Json to use as a key to work with the FireStore Module inside flutter/dart. But using the inside Firestore GCP, you just can generate a GCP Key, and not a Firestore key. Even using the "firestore adm" option in the key generator.

Here the simple code that I'm using to start the Firestore thing

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_core/firebase_core.dart';

FirebaseFirestore firestore = FirebaseFirestore.instance;

bool teste() {
  Firebase.initializeApp();
  //print(firestore.collection("users").snapshots());

  return false;
}

And here the bug that appears to me when I try to use the GCP key:

E/flutter (11150): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: [core/not-initialized] Firebase has not been correctly initialized. Have you added the "google-services.json" file to the project?
E/flutter (11150):
E/flutter (11150):     View the Android Installation documentation for more information: https://firebaseextended.github.io/flutterfire/docs/installation/android
E/flutter (11150):
E/flutter (11150): #0      MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:86:9)
E/flutter (11150): <asynchronous suspension>
E/flutter (11150): #1      Firebase.initializeApp (package:firebase_core/src/firebase.dart:43:25)
E/flutter (11150): #2      teste (package:invideo_finder/backend/verifyFireBase.dart:7:12)
E/flutter (11150): #3      _RegisterPageState.verifyUser.<anonymous closure> (package:invideo_finder/pages/register.dart:51:11)
E/flutter (11150): #4      State.setState (package:flutter/src/widgets/framework.dart:1244:30)
E/flutter (11150): #5      _RegisterPageState.verifyUser (package:invideo_finder/pages/register.dart:34:5)
E/flutter (11150): #6      _RegisterPageState.onPressButton (package:invideo_finder/pages/register.dart:69:27)
E/flutter (11150): #7      _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:993:19)
E/flutter (11150): #8      _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:1111:38)
E/flutter (11150): #9      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:183:24)
E/flutter (11150): #10     TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:598:11)
E/flutter (11150): #11     BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:287:5)
E/flutter (11150): #12     BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:222:7)
E/flutter (11150): #13     PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:476:9)
E/flutter (11150): #14     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:77:12)
E/flutter (11150): #15     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:122:9)
E/flutter (11150): #16     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:377:8)
E/flutter (11150): #17     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:120:18)
E/flutter (11150): #18     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:106:7)
E/flutter (11150): #19     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:358:19)
E/flutter (11150): #20     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
E/flutter (11150): #21     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
E/flutter (11150): #22     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
E/flutter (11150): #23     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
E/flutter (11150): #24     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
E/flutter (11150): #25     _rootRunUnary (dart:async/zone.dart:1206:13)
E/flutter (11150): #26     _CustomZone.runUnary (dart:async/zone.dart:1100:19)
E/flutter (11150): #27     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)

Some one can, please help me with it? I don't have any idea of what to do.

Answer 1

The google-services.json contains the credentials in order for yur app to access the services in GCP therefore You can use a credentials.json that can be generated for a service account. following the next steps :

• Create a service account

  • Go the the Service Account Page
  • Click on Create Service Account
  • Enter its name, and description
  • Click on Create
  • Select the roles you need to access the services you are going to use from your app
  • Click on Continue
  • Click on Done

• Click on the Service account you are using

• Click on Add Key

• Select JSON

• Click on Create

These steps will allow you to create a service accound and download its Credentials.json file.

In case you want to use the google-services.json this file is the one generated by Firebase, and can be downloaded from the firebase console after registering an app there.

Consider that when you have a GCP project you can enable firebase on it by accessing the Firebase Console and accessing to your project. and all the resources compatible with both platforms will be shared, including Firestore

Answer 2

I am not sure if you are aware that you can actually access your project google-services.json file in your Firebase console. This is the correct way of using Firebase services.

You can get the file in your project settings on Firebase Console.

Answer 3

It looks like if you have an firestore in Google cloud plataform you have one in FireBase plataform too, I didn't knew this