How to do keycloak authentication in flutter app

[Rajkuwar Yadav]

Hello Guy's 

I am getting error while implementing keycloak in my flutter app.

I am using  below url  and open in keycloak login and registration screen in webview but once registration  and login done, I can't redirect in my app and also not get access token

'$keycloakUrl/realms/$realm/protocol/openid-connect/auth?client_id=$clientId&redirect_uri=$redirectUri&response_type=code';

So please help and guide me that how to resolved this issue 

Keycloak version :- 20.1

flutter version :- 3.7.12

Thank you.