Invalid argument (callbackUrlScheme): must be a valid URL scheme

[GaneshDev]

I am using fitbitter 2.0.1 in my flutter application to display fitness related data from fitbit. But I am getting "Invalid argument (callbackUrlScheme): must be a valid URL scheme" as a error. For more details I have given below my flutter code:

import 'package:fitbitter/fitbitter.dart';

import 'package:flutter/material.dart';

import '../utils/strings.dart';

class HomePage extends StatelessWidget {

  HomePage({Key? key}) : super(key: key);

  static const route = '/';

  static const routename = 'HomePage';

  @override

  Widget build(BuildContext context) {

    print('${HomePage.routename} built');

    return Scaffold(

      appBar: AppBar(

        title: Text(HomePage.routename),

      ),

      body: Center(

        child: Column(

          mainAxisAlignment: MainAxisAlignment.center,

          children: [

            ElevatedButton(

              onPressed: () async {

                // Authorize the app and get the Fitbit credentials

                FitbitCredentials? fitbitCredentials =

                    await FitbitConnector.authorize(

                        clientID: Strings.fitbitClientID,

                        clientSecret: Strings.fitbitClientSecret,

                        redirectUri: Strings.fitbitRedirectUri,

                        callbackUrlScheme: Strings.fitbitCallbackScheme);

                print(fitbitCredentials);

                //Instantiate a proper data manager (for example, for SpO2 data)

                FitbitSpO2DataManager fitbitSpO2DataManager =

                    FitbitSpO2DataManager(

                  clientID: Strings.fitbitClientID,

                  clientSecret: Strings.fitbitClientSecret,

                );

                //Fetch yesterday's data

                final spO2Data =

                    await fitbitSpO2DataManager.fetch(FitbitSpO2APIURL.day(

                  date: DateTime.now().subtract(Duration(days: 1)),

                  fitbitCredentials: fitbitCredentials!,

                )) as List<FitbitSpO2Data>;

                print(spO2Data);

                // Use them as you want

                if (spO2Data.isNotEmpty) {

                  final snackBar = SnackBar(

                      content: Text(

                          'Yesterday your SpO2 was ${spO2Data[0].avgValue}% on average!'));

                  ScaffoldMessenger.of(context).showSnackBar(snackBar);

                }

              },

              child: Text('Tap to authorize and fetch data'),

            ),

          ],

        ),

      ),

    );

  }

}

So, please help me to solve this issue so that I can display fitness related data of user in my flutter app.

Thanks and Regards

[GordonFitbit]

Hi @GaneshDev 

"callbackUrlScheme" is not a supported parameter with Fitbit.   Please review the following pages to see what parameters are supported

Authorize: https://dev.fitbit.com/build/reference/web-api/authorization/authorize/

OAuth2 Token: https://dev.fitbit.com/build/reference/web-api/authorization/oauth2-token/

Gordon