Using Google fit API in Flutter

Question

I need my app to read step count from Google Fit. I'm using health 3.05 package. For now I copied the example code to see if it works and unfortunately it's not. Of course I did every step from this packge readme. I set up OAuth2 Client ID, I changed gradle.properties as they shown and in AndroidManifest.xml I put <uses-permission android:name="android.permission.ACTIVITY_RECOGNITION"/> . However after running app I don't get any permission window and when I click the button to get data I got an error "Authorization not granted" in console. What should I do? Thanks

Here is my code that I copied form package example:

import 'dart:async';

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

class DailyStepsScreen extends StatefulWidget {
  @override
  _DailyStepsScreenState createState() => _DailyStepsScreenState();
}

enum AppState {
  DATA_NOT_FETCHED,
  FETCHING_DATA,
  DATA_READY,
  NO_DATA,
  AUTH_NOT_GRANTED
}

class _DailyStepsScreenState extends State<DailyStepsScreen> {
  List<HealthDataPoint> _healthDataList = [];
  AppState _state = AppState.DATA_NOT_FETCHED;

  @override
  void initState() {
    super.initState();
  }


  Future<void> fetchData() async {
    /// Get everything from midnight until now
    DateTime startDate = DateTime(2020, 11, 07, 0, 0, 0);
    DateTime endDate = DateTime(2025, 11, 07, 23, 59, 59);

    HealthFactory health = HealthFactory();

    /// Define the types to get.
    List<HealthDataType> types = [
      HealthDataType.STEPS,
      HealthDataType.WEIGHT,
      HealthDataType.HEIGHT,
      HealthDataType.BLOOD_GLUCOSE,
      HealthDataType.DISTANCE_WALKING_RUNNING,
    ];

    setState(() => _state = AppState.FETCHING_DATA);

    /// You MUST request access to the data types before reading them
    bool accessWasGranted = await health.requestAuthorization(types);

    int steps = 0;

    if (accessWasGranted) {
      try {
        /// Fetch new data
        List<HealthDataPoint> healthData =
        await health.getHealthDataFromTypes(startDate, endDate, types);

        /// Save all the new data points
        _healthDataList.addAll(healthData);
      } catch (e) {
        print("Caught exception in getHealthDataFromTypes: $e");
      }

      /// Filter out duplicates
      _healthDataList = HealthFactory.removeDuplicates(_healthDataList);

      /// Print the results
      _healthDataList.forEach((x) {
        print("Data point: $x");
        steps += x.value.round();
      });

      print("Steps: $steps");

      /// Update the UI to display the results
      setState(() {
        _state =
        _healthDataList.isEmpty ? AppState.NO_DATA : AppState.DATA_READY;
      });
    } else {
      print("Authorization not granted");
      setState(() => _state = AppState.DATA_NOT_FETCHED);
    }
  }

  Widget _contentFetchingData() {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: <Widget>[
        Container(
            padding: EdgeInsets.all(20),
            child: CircularProgressIndicator(
              strokeWidth: 10,
            )),
        Text('Fetching data...')
      ],
    );
  }

  Widget _contentDataReady() {
    return ListView.builder(
        itemCount: _healthDataList.length,
        itemBuilder: (_, index) {
          HealthDataPoint p = _healthDataList[index];
          return ListTile(
            title: Text("${p.typeString}: ${p.value}"),
            trailing: Text('${p.unitString}'),
            subtitle: Text('${p.dateFrom} - ${p.dateTo}'),
          );
        });
  }

  Widget _contentNoData() {
    return Text('No Data to show');
  }

  Widget _contentNotFetched() {
    return Text('Press the download button to fetch data');
  }

  Widget _authorizationNotGranted() {
    return Text('''Authorization not given.
        For Android please check your OAUTH2 client ID is correct in Google Developer Console.
         For iOS check your permissions in Apple Health.''');
  }

  Widget _content() {
    if (_state == AppState.DATA_READY)
      return _contentDataReady();
    else if (_state == AppState.NO_DATA)
      return _contentNoData();
    else if (_state == AppState.FETCHING_DATA)
      return _contentFetchingData();
    else if (_state == AppState.AUTH_NOT_GRANTED)
      return _authorizationNotGranted();

    return _contentNotFetched();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
          appBar: AppBar(
            title: const Text('Plugin example app'),
            actions: <Widget>[
              IconButton(
                icon: Icon(Icons.file_download),
                onPressed: () {
                  fetchData();
                },
              )
            ],
          ),
          body: Center(
            child: _content(),
          )
    );

  }
}

Answer 1

Step 1 use health: 3.0.4

Step 2 do proper set up for OAuth2 Client ID, download new google-service.json

Step 3 From Android 10. you have to add ACTIVITY_RECOGNITION for getting STEP Count permission in AndroidManifest.xml.

<uses-permission android:name="android.permission.ACTIVITY_RECOGNITION" />

Step 4 And then using permission_handler ask for permission.

if (Platform.isAndroid) {
  final permissionStatus = Permission.activityRecognition.request();
  if (await permissionStatus.isDenied ||
      await permissionStatus.isPermanentlyDenied) {
    showToast(
        'activityRecognition permission required to fetch your steps count');
    return;
  }
}

Answer 2

FINALLY GOT THIS ISSUE SOLVED!!

So the problem doesn't lie in the version I am using 3.4.0 but still got the problem solved

Authorization not granted. And stuck in loading screen

Stuck in authorization request screen

When you create your OAuth 2.0 consent screen try to add at least 2 email addresses to the TEST USER section and make sure to login from that emails.

Add 2 email addresses in Test User

After that make sure to verify your application from Google, it will work until you test your app once you release the application, it will not work

Verify Your Application from Google

Final Result