Completed Ios AvaloniaView implementation.

src/iOS/Avalonia.iOS/AvaloniaView.cs

@@ -170,6 +170,11 @@ namespace Avalonia.iOS
             //Not supported
         }
 
+        public void SetIgnoreTaskBarWhenMaximized(bool enable)
+        {
+            //Not supported
+        }
+
         public override void TouchesEnded(NSSet touches, UIEvent evt)
         {
             var touch = touches.AnyObject as UITouch;