ArcGISRuntimeXamarin.SamplesListActivity.OnCreate C# (CSharp) Метод

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Set the ContentView to the SamplesList (a ListView)
            SetContentView(Resource.Layout.SamplesList);

            // Retrieve the selected category from the Categories List. 
            var selectedCategory = Intent.GetIntExtra("SelectedCategory", 0);

            // Get the listing of categories; Would be good to eventually be able to pass
            // this info, but Android doesn't allow passing Complex types. 
            var sampleCategories = SampleManager.Current.GetSamplesAsTree();  // TODO: Cache this in the SampleManager
            var category = sampleCategories[selectedCategory] as TreeItem;

            // Loop through the categories and create a list of each subcategory and the 
            // items (Samples) it contains.
            List<Object> listSubCategories = new List<Object>();
            for (int i = 0; i < category.Items.Count; i++)
            {
                listSubCategories.Add((category.Items[i] as TreeItem).Items);
            }

            // With the newly-created list of subcategory items, create a new list for the
            // adapter that contains just the individual Samples.
            _listSampleItems = new List<SampleModel>();
            foreach (List<object> subCategoryItem in listSubCategories)
            {
                foreach (var sample in subCategoryItem)
                {
                    _listSampleItems.Add(sample as SampleModel);
                }
            }

            var samplesAdapter = new SamplesListAdapter(this, _listSampleItems);

            ListView samplesListView = FindViewById<ListView>(Resource.Id.samplesListView);
            samplesListView.Adapter = samplesAdapter;
            samplesListView.ItemClick += SamplesListView_ItemClick;
        }