我有以下类(class):usingCirrious.MvvmCross.Binding.BindingContext;usingCirrious.MvvmCross.Droid.Views;usingCirrious.MvvmCross.Droid.Fragging;usingCirrious.MvvmCross.Droid.Fragging.Fragments;publicclassDifficultyItemFragment:MvxFragment{publicoverrideViewOnCreateView(LayoutInflaterinflater,ViewGroupcon