protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetBackBtn();
SetTitle("ExpandableItem Activity");
SetContentView(Resource.Layout.activity_expandable_item_use);
_recyclerView = FindViewById <RecyclerView>(Resource.Id.rv);
_list = GenerateData();
_adapter = new ExpandableItemAdapter(_list);
var manager = new GridLayoutManager(this, 3);
manager.SetSpanSizeLookup(new SpanSizeLookup(manager, _adapter));
_recyclerView.SetAdapter(_adapter);
_recyclerView.SetLayoutManager(manager);
_adapter.ExpandAll();
}
public SpanSizeLookup(GridLayoutManager manager, ExpandableItemAdapter adapter)
{
_manager = manager;
_adapter = adapter;
}
