Custom ViewCellRenderer in iOS does not work - xamarin

Question

I'm trying to use a custom ViewCellRenderer for iOS in Xamarin Forms, but the renderer never called. I'm using a custom ListViewRenderer too and that is working like a charm. Anyone have any idea about this?
Here is my TableViewRenderer
[assembly: ExportRenderer(typeof(ListView), typeof(CustomTableViewRenderer))]
namespace OdontoWayPaciente.Mobile.iOS.Renderers
{
public class CustomTableViewRenderer : ListViewRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<ListView> e)
{
base.OnElementChanged(e);
if (Control != null && e.NewElement != null)
{
Control.TableFooterView = new UIView(CGRect.Empty);
if (e.NewElement.IsGroupingEnabled)
{
var groupedTableView = new UITableView(Control.Frame, UITableViewStyle.Grouped);
groupedTableView.Source = Control.Source;
SetNativeControl(groupedTableView);
}
}
}
}
}
Here is my ViewCellRenderer:
[assembly: ExportRenderer(typeof(ViewCell), typeof(CustomAllViewCellRendereriOS))]
namespace OdontoWayPaciente.Mobile.iOS.Renderers
{
public class CustomAllViewCellRendereriOS : ViewCellRenderer
{
public override UITableViewCell GetCell(Cell item, UITableViewCell reusableCell, UITableView tableView)
{
var cell = base.GetCell(item, reusableCell, tableView);
if (cell != null)
{
cell.SelectionStyle = UITableViewCellSelectionStyle.None;
}
if (tableView.Style == UITableViewStyle.Grouped)
{
cell.TintColor = UIColor.Blue;
cell.BackgroundColor = UIColor.Blue;
}
return cell;
}
}
}
Here is my ViewCell XAML code:
<ViewCell Height="{StaticResource listItem_alturaLinhaUnica}"
StyleId="disclosure">
<ContentView>
<ContentView.BackgroundColor>
<OnPlatform x:TypeArguments="Color" iOS="White"/>
</ContentView.BackgroundColor>
<AbsoluteLayout VerticalOptions="Center" BackgroundColor="White">
<Label
Text="{Binding TextoAcesso}"
Style="{DynamicResource TextoPrimario}">
<Label.Margin>
<OnPlatform x:TypeArguments="Thickness">
<On Platform="iOS" Value="18, 8, 0, 8"/>
</OnPlatform>
</Label.Margin>
</Label>
</AbsoluteLayout>
</ContentView>
</ViewCell>

Answer 1

Please check your ListView's ItemsSource, the ListView should have at least one cell then the CustomViewRenderer will be called.
if I use ListView with GroupingEnabled=True, CustomViewRenderer is not
called, but GroupingEnabled=false, CustomViewCellRenderer is called
Whether you just add some groups in your ItemsSource like: new List<Group> { group1, group2 };, but each group contains none item. When you set the IsGroupingEnabled to false, the ListView has two cells in this case so renderer called. But if the IsGroupingEnabled is true, the ListView just has two sections without any cells then renderer will not be called.