We have an Android.Support.V4.App.Fragment class called 'AbstractFestivalActsFragment' with an OnCreateView() function. The app crashes when calling this function at the following line: this.AssignResourceProperties (view); with error:

Resource with ID 'nowPlayingButton' is of a non-native type and cannot be automatically resolved

At the top of the class an ImageButton is created in this way:

[AndroidResource ("nowPlayingButton")]
public ImageButton NowPlayingButton { get; private set; }

This AndroidResource is an Attribute class named AndroidResourceAttribute:

public class AndroidResourceAttribute : Attribute
    {
        public AndroidResourceAttribute(string resourceId, bool checkForNull = true);

        public bool CheckForNull { get; }
        public string ResourceId { get; }

        public virtual int GetResource(Context context);
    }

The whole OnCreateView function:

public override View OnCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            bool b  = (ViewModel.GetTotalModelCount() == 0);

            if (b)
            {
                var view                                        = new NoTimetableResultsViewHolder (inflater.Inflate (Resource.Layout.NoTimetableResultsView, container, false));

                if (this is FestivalProgramFragment)
                {
                    view.TextLabel.Text = view.TextLabel.Text.Replace("timetable", "program");
                }

                view.ItemView.SetBackgroundColor(Android.Graphics.Color.White);
                ((LinearLayout) view.ItemView).SetGravity(GravityFlags.Center);

                return view.ItemView;
            }
            else
            {
                var view = inflater.Inflate ((this is FestivalProgramFragment ? Resource.Layout.FestivalProgramFragment : Resource.Layout.FestivalTimetableFragment), container, false);

                //Exception making it crash 
                this.AssignResourceProperties (view);

                if (ViewModel.HasNowPlaying)
                {
                    NowPlayingButton.Click += HandleNowPlayingButtonClick;
                }
                else
                {
                    NowPlayingButton.Visibility = ViewStates.Invisible;
                }

                FavoritesButton.Click += HandleFavoritesButtonClick;
                SelectDayButton.Click += ShowFilterDatePicker;

                if (ViewModel.DateFilter.HasValue)
                {
                    SelectDayButton.Selected                    = true;
                    SelectDayButton.Text                        = ViewModel.DateFilter.Value.ToString ("m");
                }
                else if (ViewModel.NowPlaying)
                {
                    NowPlayingButton.Selected                   = true;
                    SelectDayButton.Text                        = "Select a day";
                }
                else
                {
                    SelectDayButton.Selected                    = true;
                    SelectDayButton.Text                        = "All days";
                }

                // BUG: The ViewPager object seems to be partially shared unless the id is unique.
                // This only seems to occur for the ViewPager and even when the adapter is different.
                ViewPager                                       = view.FindViewById<ViewPager> ((this is FestivalProgramFragment) ?                     Resource.Id.stageViewpager1 : Resource.Id.stageViewpager2);
                ViewPager.Adapter                               = GetViewPagerAdapter();

                TabStrip                                        = view.FindViewById<TabLayout> (Resource.Id.tabStrip);
                TabStrip.SetTabTextColors(Android.Graphics.Color.White, Android.Graphics.Color.White);
                ResetTabStrip();

                return view;
            }       
        }