How to solve error while scrolling listview slowly in android not in iOS with DataTemplateSelector?

I've created a Xamarin.forms project and I've created DataTemplateSelector which is working fine in iOS but in Andoird, when I scroll faster app don't crash but when I scroll slower the app crashes and TargetInvocationException comes. I'm not even able to track the error and its the choice of error when it wants to come, sometimes it don't crash with same data either scroll faster or slower and sometimes it immediately crashes with the same data when we try to scroll a little bit.

I've logged the error and below is the error in log:

Time: 12/14/2016 1:37:48 PM
Error: Unhandled Exception
System.Exception: CurrentDomainOnUnhandledException ---> Java.Lang.RuntimeException: java.lang.reflect.InvocationTargetException ---> Java.Lang.Reflect.InvocationTargetException: Exception of type 'Java.Lang.Reflect.InvocationTargetException' was thrown. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
  at System.ThrowHelper.ThrowArgumentOutOfRangeException (System.ExceptionArgument argument, System.ExceptionResource resource) [0x00011] in <368820a9888f43ddb85d18e87189adbf>:0 
  at System.ThrowHelper.ThrowArgumentOutOfRangeException () [0x00000] in <368820a9888f43ddb85d18e87189adbf>:0 
  at System.Collections.Generic.List`1[T].get_Item (System.Int32 index) [0x0000c] in <368820a9888f43ddb85d18e87189adbf>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00038] in <368820a9888f43ddb85d18e87189adbf>:0 
   --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00056] in <368820a9888f43ddb85d18e87189adbf>:0 
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in <368820a9888f43ddb85d18e87189adbf>:0 
  at Xamarin.Forms.BindingExpression+BindingExpressionPart.TryGetValue (System.Object source, System.Object& value) [0x00026] in <7b0368eb3d0f405da776a09e3171532a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <368820a9888f43ddb85d18e87189adbf>:0 
  at Java.Interop.JniEnvironment+InstanceMethods.CallNonvirtualBooleanMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x000a8] in <a043032cf94a485190047a14918b9f60>:0 
  at Java.Interop.JniPeerMembers+JniInstanceMethods.InvokeVirtualBooleanMethod (System.String encodedMember, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x00068] in <a043032cf94a485190047a14918b9f60>:0 
  at Android.Views.View.DispatchTouchEvent (Android.Views.MotionEvent e) [0x00036] in <206240d88f7f44d795aacbc1d5348a1f>:0 
  at Xamarin.Forms.Platform.Android.PlatformRenderer.DispatchTouchEvent (Android.Views.MotionEvent e) [0x00035] in <d572ae0ccf89437fad1de1370c623a06>:0 
  at Android.Views.View.n_DispatchTouchEvent_Landroid_view_MotionEvent_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_e) [0x00011] in <206240d88f7f44d795aacbc1d5348a1f>:0 
  at (wrapper dynamic-method) System.Object:035bfbdb-dd96-451c-b894-4f2fd770769d (intptr,intptr,intptr)
   --- End of inner exception stack trace ---
   --- End of inner exception stack trace ---
   --- End of inner exception stack trace ---

Below is the code of xaml.cs file

http://pastebin.com/UvyxMwtP

Below is the code of xaml file

http://pastebin.com/VVfKAjnn

Below is the code of DataTemplateSelector

http://pastebin.com/nn2dGZAW

Below are the code of templates:

`http://pastebin.com/0mJD1gJ1 http://pastebin.com/uJiLnBKK http://pastebin.com/gcj2TuJ1 http://pastebin.com/c8TByW1z http://pastebin.com/ww51B4Su`
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