I'm using sign_in_with_apple and I've got the signin working for ios but the android component is not working.
I've had a look through the docs and issues where this is asked but there are no clear answers. https://github.com/aboutyou/dart_packages/tree/master/packages/sign_in_with_apple
I'm stuck on the part of the docs for this plugin that say:
On the Sign in with Apple callback on your sever (specified in WebAuthenticationOptions.redirectUri), redirect safely back to your Android app using the following URL:
intent://callback?${PARAMETERS_FROM_CALLBACK_ BODY}#Intent;package=YOUR.PACKAGE.IDENTIFIER;scheme=signinwithapple;end
The PARAMETERS FROM CALLBACK BODY should be filled with the urlencoded body you receive on the endpoint from Apple's server, and the package parameter should be changed to match your app's package identifier (as published on the Google Play Store). Leave the callback path and signinwithapple scheme untouched.
Furthermore, when handling the incoming credentials on the client, make sure to only overwrite the current (guest) session of the user once your own server have validated the incoming code parameter, such that your app is not susceptible to malicious incoming links (e.g. logging out the current user).
The part that says: The PARAMETERS FROM CALLBACK BODY should be filled with the urlencoded body you receive on the endpoint from Apple's server. I'm unsure about how to get this and correctly format the PARAMATERS_FROM_CALLBACK_BODY part of the redirectURL to get this working for Android.