Problem with configure Amplify Datastore

[HappyMakadiya]

Bug

I am facing bug from couple of days that Tried to get a plugin before it was configured. Make sure you call Amplify.configure() first. But it is already configured before calling Amplify.Datastore.save(). and I am sure that nothing wrong with my Amplify Configuration json file because I am successfully able to add plugin of AmplifyAuthCognito and configure Amplify by that json file only to register activity of my application.

To Reproduce

import 'dart:ui';
import 'package:amplify_datastore/amplify_datastore.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:amplify_flutter/amplify.dart';
import 'package:grillhouse/Screens/Registration/login_screen.dart';
import 'amplifyconfiguration.dart';
import 'package:grillhouse/models/ModelProvider.dart';

void main() async {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  initState(){
    super.initState();
     _configureAmplify();
  }

  void _configureAmplify() async {

      try {
        await Amplify.addPlugin(AmplifyDataStore(modelProvider: ModelProvider.instance));
        await Amplify.configure(amplifyconfig);
      } catch (e) {
        print("AmplifyException" + e.message);
      }
      final item = Todo(id: "01", name: "test");
      await Amplify.DataStore.save(item);
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        theme: ThemeData(
          primaryColor: Color(0xffffb525),
        ),
        debugShowCheckedModeBanner: false,
        home: LoginScreen()
      );
  }
}

Logs

Launching lib\main.dart on Redmi Note 5 Pro in debug mode...
Running Gradle task 'assembleDebug'...
√ Built build\app\outputs\flutter-apk\app-debug.apk.
Installing build\app\outputs\flutter-apk\app.apk...
Debug service listening on ws://127.0.0.1:50802/--qJovx-KqY=/ws
Syncing files to device Redmi Note 5 Pro...
I/mple.grillhous(18550): ProcessProfilingInfo new_methods=1015 is saved saved_to_disk=1 resolve_classes_delay=8000
D/AWSMobileClient(18550): Inspecting user state details
W/mple.grillhous(18550): Accessing hidden field Lsun/misc/Unsafe;->theUnsafe:Lsun/misc/Unsafe; (light greylist, reflection)
I/flutter (18550): AmplifyExceptionUnable to read appId or region from the amplify configuration json.
E/MethodChannel#com.amazonaws.amplify/datastore(18550): Failed to handle method call
E/MethodChannel#com.amazonaws.amplify/datastore(18550): java.lang.IllegalStateException: Tried to get a plugin before it was configured.  Make sure you call Amplify.configure() first.
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at com.amplifyframework.core.category.Category.getPluginIfConfiguredOrThrow(Category.java:239)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at com.amplifyframework.core.category.Category.getPlugin(Category.java:186)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at com.amazonaws.amplify.amplify_datastore.AmplifyDataStorePlugin.onSave(AmplifyDataStorePlugin.kt:272)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at com.amazonaws.amplify.amplify_datastore.AmplifyDataStorePlugin.onMethodCall(AmplifyDataStorePlugin.kt:107)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:818)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at android.os.MessageQueue.next(MessageQueue.java:326)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at android.os.Looper.loop(Looper.java:165)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at android.app.ActivityThread.main(ActivityThread.java:6810)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
E/MethodChannel#com.amazonaws.amplify/datastore(18550): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
E/flutter (18550): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: DataStoreException(message: An unknown exception has happened.           Please take a look at 
E/flutter (18550):         https://github.com/aws-amplify/amplify-flutter/issues to see if there are any existing issues that 
E/flutter (18550):         match your scenario, and file an issue with the details of the bug if there isn't.
E/flutter (18550):   , recoverySuggestion: We currently don't have a recovery suggestion for this exception., underlyingException: PlatformException(error, Tried to get a plugin before it was configured.  Make sure you call Amplify.configure() first., null, java.lang.IllegalStateException: Tried to get a plugin before it was configured.  Make sure you call Amplify.configure() first.
E/flutter (18550): 	at com.amplifyframework.core.category.Category.getPluginIfConfiguredOrThrow(Category.java:239)
E/flutter (18550): 	at com.amplifyframework.core.category.Category.getPlugin(Category.java:186)
E/flutter (18550): 	at com.amazonaws.amplify.amplify_datastore.AmplifyDataStorePlugin.onSave(AmplifyDataStorePlugin.kt:272)
E/flutter (18550): 	at com.amazonaws.amplify.amplify_datastore.AmplifyDataStorePlugin.onMethodCall(AmplifyDataStorePlugin.kt:107)
E/flutter (18550): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/flutter (18550): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
E/flutter (18550): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:818)
E/flutter (18550): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (18550): 	at android.os.MessageQueue.next(MessageQueue.java:326)
E/flutter (18550): 	at android.os.Looper.loop(Looper.java:165)
E/flutter (18550): 	at android.app.ActivityThread.main(ActivityThread.java:6810)
E/flutter (18550): 	at java.lang.reflect.Method.invoke(Native Method)
E/flutter (18550): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
E/flutter (18550): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
E/flutter (18550): ))
E/flutter (18550): #0      AmplifyDataStoreMethodChannel.save (package:amplify_datastore/method_channel_datastore.dart:105:7)
E/flutter (18550): <asynchronous suspension>
E/flutter (18550): #1      _MyAppState._configureAmplify (package:grillhouse/main.dart:35:7)
E/flutter (18550): <asynchronous suspension>
E/flutter (18550): 

Platform
[1] Android

Output of flutter doctor -v

[haverchuck]

@HappyMakadiya Could you post your amplifyconfiguration.dart - feel free to remove all of the values, except for region. In most cases we just need to see the keys you're using.

[HappyMakadiya]

@HappyMakadiya Could you post your amplifyconfiguration.dart - feel free to remove all of the values, except for region. In most cases we just need to see the keys you're using.

const amplifyconfig = ''' {
    "UserAgent": "aws-amplify-cli/2.0",
    "Version": "1.0",
    "auth": {
        "plugins": {
            "awsCognitoAuthPlugin": {
                "UserAgent": "aws-amplify-cli/0.1.0",
                "Version": "0.1.0",
                "IdentityManager": {
                    "Default": {}
                },
                "CredentialsProvider": {
                    "CognitoIdentity": {
                        "Default": {
                            "PoolId": "<poolid>",
                            "Region": "ap-south-1"
                        }
                    }
                },
                "CognitoUserPool": {
                    "Default": {
                        "PoolId": "<poolid>",
                        "AppClientId": "<appclientid>",
                        "Region": "ap-south-1"
                    }
                },
                "Auth": {
                    "Default": {
                        "authenticationFlowType": "USER_SRP_AUTH"
                    }
                },
                "AppSync": {
                    "Default": {
                        "ApiUrl": "<apiurl>",
                        "Region": "ap-south-1",
                        "AuthMode": "API_KEY",
                        "ApiKey": "<apikey>",
                        "ClientDatabasePrefix": "grillhouse_API_KEY"
                    }
                }
            }
        }
    },
    "api": {
        "plugins": {
            "awsAPIPlugin": {
                "grillhouse": {
                    "endpointType": "GraphQL",
                    "endpoint": "<endpoint>",
                    "region": "ap-south-1",
                    "authorizationType": "API_KEY",
                    "apiKey": "<apikey>"
                }
            }
        }
    }
}''';

[Kilo-Loco]

Based on your amplifyconfiguration.dart file, it looks like you've added both the Auth and API categories. You'll need to add those plugins to the _configureAmplify() as well as install the dependencies.

Add the following to pubspec.yaml:

dependencies:
    ... # amplify_datastore: <1.0.0
    amplify_auth_cognito: <1.0.0
    amplify_api: <1.0.0

Add the following to _configureAmplify():

... // await Amplify.addPlugin(AmplifyDataStore(modelProvider: ModelProvider.instance));

await Amplify.addPlugin(AmplifyAPI())
await Amplify.addPlugin(AmplifyAuthCognito());

... // await Amplify.configure(amplifyconfig);

The ... # and ... // in the snippets above are used to show context in where the code should be added. Please do not add ... in the code.

[HuiSF]

Hi @HappyMakadiya, I believe @Kilo-Loco 's answer should be able to help you resolve this issue. (Thank you Kyle!)
I will close this issue now, please feel free to reopen if you have any following-up concerns.

[b-cancel]

This is a bug report I just filed that includes a couple of bugs I found and the workarounds to each
after reading your bug report I think it could help others that might land on this page
#822