Implement iOS Share Services in PCL project

sevontheedge

I need to implement the feature that when you click in the share options (in the Photos app for instance) you can choose your app to open the image.

I came across this link that helped me start the sharing in Android, but ended up not working on iOS.

http://thatcsharpguy.com/post/opening-files-xamarin-forms/

I tried googling how to register your app and how to handle this incoming image in a PCL project, but had little to none progress.

Is there any references or samples I could try?

Thanks in advance.