Xamarin: Calling Native code from a Hybrid Application

In a recent post, I described how to import code from ASP.NET MVC into a Xamarin Hybrid application.  In this post, I will show how you can reach into native code from that application.

Remember that our application has Views (.cshtml files), a Model class and a ViewModel class.  You will also remember that the UI consisted of a main page (with thumbnails of the images) and a details page with the image and associated meta-data.  We’d like to be able to tweet the image, and iOS makes this pretty simple.

Continued here