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A compile error occurs when building for device while implementing a custom MKMapView subclass and overriding the methods AddAnnotation and AddAnnotations.
**Steps to Reproduce:**
1. Create a Unified iOS app
2. Add this code:
public class CustomMapView : MKMapView
public override void AddAnnotation(IMKAnnotation annotation)
public override void AddAnnotations(params IMKAnnotation annotations)
3. Build the app for Device (compiles OK for simulator)
> /Users/johnmiller/Downloads/MapDemo/MapDemo/MTOUCHTASK: Error MT4111: The registrar cannot build a signature for type `MapKit.IMKAnnotation' in method `MapDemo.CustomMapView.AddAnnotations`. (MT4111) (MapDemo)
**Build Date & Platform:**
I have checked this issue with Xamarin.iOS 188.8.131.52 (Master) and this issue has been fixed.
Hence closing this issue. Screencast : http://www.screencast.com/t/8FMiAoUb1
Environment Info :
Mac OS X 10.9.5
Xamarin Studio 5.7.1 (build 17)
Mono 3.12.0 ((detached/a813491)
GTK+ 2.24.23 (Raleigh theme)
Xcode 6.1.1 (6611)
Xamarin.iOS 184.108.40.206 (Business Edition)
I have also checked this issue with Xamarin.iOS 220.127.116.11 (Release) and this issue has been fixed with build Xamarin.iOS 18.104.22.168 (Release) also.
Screencast : http://www.screencast.com/t/C7Q9mXBBCps