Bindind project cannot find attribute of type Basetype

I am trying to link the objective-c library. BaseType attribute could not be created!

I am following the tutorial on the Xamarin. I also tried searching on the web and I found some solutions like:

• Someone said I haven't created a Xamarin ios binding project , but I have ApiDefinition.cs and StructsAndEnums.cs;

• Set correct ObjcBindingApiDefinition ;

• Uses Objective Sharpie but gets a lot of errors.

I can't remember anymore, but none of them work.

Here's the modified auto-generated code:

namespace BindingProject
    {
        using System;
        using System.Drawing;
        using System.Collections;

        using MonoTouch.CoreGraphics;
        using MonoTouch.CoreAnimation;

        using MonoTouch.ObjCRuntime;
        using MonoTouch.Foundation;
        using MonoTouch.UIKit;

        [**BaseType** (typeof (NSObject))]

        interface UIResponder {

        }
    }

      

        
        
        
      

    

I am creating a project going by solution:

• FROM#
• IOS
• Choose Classic or Unified API (I can't remember now as both are of type)
• I selected IOS Binding Project .

What I know, when I choose one, Classic or Unified, I cannot find any MonoTouch types.