While wanting to implement the Facebook SDK in Xamarin Forms, I couldn't find a single place or example that showed how to use the latest SDK for iOS and Android.
- https://components.xamarin.com/view/facebookios
- https://components.xamarin.com/gettingstarted/facebookandroid
There's :
- https://github.com/IdoTene/XamarinFormsNativeFacebook
- https://components.xamarin.com/view/facebook-sdk
These don't use the latest SDK's provided and kept up to date by Xamarin but were helpful to come to the final solution.