Xamarin.GooglePlayServices.Ads. v10.2.1 My project broke, and this message appears
Severity Code Description Project File Line Suppression State
Error CS0012 The type 'FragmentActivity' is defined in an assembly that is not referenced. You must add a reference to assembly 'Xamarin.Android.Support.v4, Version=220.127.116.11, Culture=neutral, PublicKeyToken=71f3e3261ac778b5'. App16 C:\Users\jon\Documents\New folder\App16 - Copy (8)\App16\MainActivity.cs 11 Active
How to fix this?
Target Framwork 8.0,
Target Android Vesion 8.0
I found the problem, it was conflict between the CrossLight RecyclerView package with V4. I unplugged CrossLight and reinstalled the V7 package. Everything is OK