We are trying to integrate fusionAuth with flutter and I have already refereed to the posts

https://pub.dev/packages/flutter_appauth/example
//https://fusionauth.io/community/forum/topic/428/social-login-with-flutter-app/6

I have tried the code and it works good with Auth0 but I am not able to get it working with fusionAuth

here is the link to Auth0 code
https://github.com/auth0-blog/flutter-authentication/blob/main/lib/main.dart

I replaced the code with FusionAuth credentials, it opens the webclient but after authentication callback I get the below error..

Below is the code

const String FUSIONAUTH_DOMAIN= 'fusionauth.mydomain.com';
const String FUSIONAUTH_CLIENTID = 'xxxxxxx-83a4-4523-823e-2b4390df1ef8';
const String FUSIONAUTH_REDIRECT_URI = 'com.test.flutter://login-callback';
const String FUSIONAUTH_ISSUER = 'https://$FUSIONAUTH_DOMAIN';
const String FUSIONAUTH_DISCOVERY_URL = 'https://fusionauth.mydomain.com/.well-known/openid-configuration/xxxxxxx-9068-48fb-9af4-7b279d66395c';

final List<String> _scopes = <String>[
'openid',
'profile',
'email',
'offline_access',
'api'
];

Future<void> loginAction() async {
setState(() {
isBusy = true;
errorMessage = '';
});
try {
AuthorizationTokenResponse result;
await appAuth.authorizeAndExchangeCode(
AuthorizationTokenRequest(
FUSIONAUTH_CLIENTID,
FUSIONAUTH_REDIRECT_URI,
issuer: FUSIONAUTH_ISSUER,
//discoveryUrl: FUSIONAUTH_DISCOVERY_URL,
scopes: _scopes,
),
);

.. rest of the code is same from Auth0 example..

It throws me an error saying
[ error:invalid_client_descripition, C
Client authentication missing as Basic Authorization header or credentials in the body (or some combination of them).], null, null

if somebody can point what am I doing wrong

@dan Thank you so much,

I am trying to implement it and using the below function, but it redirects to the fusionAuth UI but when on the callback I see the below error

 result =
        await appAuth.authorizeAndExchangeCode(
          AuthorizationTokenRequest(
            FUSIONAUTH_CLIENTID,
            FUSIONAUTH_REDIRECT_URI,
//            issuer: FUSIONAUTH_ISSUER,
            discoveryUrl: FUSIONAUTH_DISCOVERY_URL,
            scopes: <String>['openid', 'profile', 'offline_access'],
            // promptValues: ['login']
          ),
        );```

I am getting thee error below
===================
PlatformException(authorize_and_exchange_code_failed, Failed to authorize:[error: invalid_client, description: Client
authentication missing aaas Basic Authorization header or credentials in the body(or some combination of them.], null, null)

Hi

Ours is a SAAS ap We have Identitify providers Facebook and Google enabled, but everytime we create a new application, we need to turn on Google and Facebook manually.

Would like to know how can we turn in on through Java API library or any other pointer

thank you

We are new to flutter development and not sure how to integrate fusion auth, I am going thru the pointers but does not seem straightforward, if there is a sample implementation that would be awesome

Hi

Once the user has been authenticated, I am trying to find out, what will be the API and what parameters it will need, below is the redirect URL recieved

https://m300.test.com/?code=HM1Mn2WTKZkafXr7c3Y_5RyOxoOJkBSvSbCLimHwPm0&locale=en_US&userState=Authenticated

thank you