Remove the background color from the ListView group header on iOS

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I enabled grouping in the ListView, and the group header has a light gray background color. How can I remove it \ make it transparent?

iOS sets the default background color of Cell instances. You can change it via iOS platform-specific property:

<ListView xmlns="http://xamarin.com/schemas/2014/forms"
          xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
          xmlns:ios="clr-namespace:Xamarin.Forms.PlatformConfiguration.iOSSpecific;assembly=Xamarin.Forms.Core">
  <ListView.GroupHeaderTemplate>
    <DataTemplate>
      <ViewCell ios:Cell.DefaultBackgroundColor="Transparent">
        <!--other views...-->
      </ViewCell>
    </DataTemplate>
  </ListView.GroupHeaderTemplate>
</ListView>

Remove separator beneath ListView GroupHeaderTemplate , I enabled grouping in the ListView, and the group header has a light gray background color. How can I remove it \ make it transparent? The ListView.On<iOS> method specifies that this platform-specific will only run on iOS. The Cell.SetDefaultBackgroundColor method, in the Xamarin.Forms.PlatformConfiguration.iOSSpecific namespace, sets the cell background color to a specified Color .

You have to do this through a renderer.

I believe that a background color is added by default because an iOS group header sticks to the top of the view and the cells slide under it. So if there is no background color, the text of the header floats over the cells and it looks a bit silly.

[assembly: ExportRenderer(typeof(ViewCell), typeof(TransparentViewCellRenderer))]
namespace MyProject.iOS.Renderers
{
    public class TransparentViewCellRenderer : ViewCellRenderer
    {
        public TransparentViewCellRenderer()
        {

        }

        public override UITableViewCell GetCell(Cell item, UITableView tv)
        {
            var cell = base.GetCell(item, tv);
            if (cell != null) cell.BackgroundColor = UIColor.Clear;
            return cell;
        }
    }
}

Issue with ListView GroupHeaders on iOS · Issue #1540 · xamarin , Is there any way to remove the separator beneath the ListView group headers? <ViewCell Height="45"> <StackLayout BackgroundColor="White" rows on iOS, but not change the separator under the group header to red  I believe that a background color is added by default because an iOS group header sticks to the top of the view and the cells slide under it. So if there is no background color, the text of the header floats over the cells and it looks a bit silly.

The solution with the renderer does not work any more.

For people who want to do it with a custom renderer, you will need to user the SetBackgroundColor methods instead of setting the BackgroundColor property of the UITableViewCell

[assembly: ExportRenderer(typeof(ViewCell), typeof(TransparentViewCellRenderer))]
namespace MyProject.iOS.Renderers
{
    public class TransparentViewCellRenderer : ViewCellRenderer
    {
        public override UITableViewCell GetCell(Cell pCell, UITableViewCell pReusableCell, UITableView pTableView)
        {
            UITableViewCell lCell = base.GetCell(pCell, pReusableCell, pTableView);
            if (lCell != null)
            {
                SetBackgroundColor(lCell, pCell, UIColor.Clear);
            }
            return lCell;
        }
    }
}

ListView Appearance, When creating a ListView with a custom GroupHeaderTemplate, even with the group header separator, regardless of how you try remove it on iOS 11. GroupHeaderTemplate, then set the ListView background colour to a  ListView Group Header Style on iOS. 10/24/2018; 2 minutes to read; In this article. Download the sample. This iOS platform-specific controls whether ListView header cells float during scrolling. It's consumed in XAML by setting the ListView.GroupHeaderStyle bindable property to a value of the GroupHeaderStyle enumeration: <ContentPage

you could set the background color to white. Just put a Grid or StackLayout into a ViewCell and use the ViewCell in your DataTemplate of your ListView's GroupHeaderTemplate! Example:

<ListView.GroupHeaderTemplate>
        <DataTemplate>
            <ViewCell Height="25">
                <Grid BackgroundColor="#ffffff" VerticalOptions="FillAndExpand">
                    <Label Text="{Binding Title}" />
                </Grid>
            </ViewCell>
        </DataTemplate>
</ListView.GroupHeaderTemplate>

You can check out this page for more Informations: https://montemagno.com/enhancing-xamarinforms-listview-with-grouping/

Xamarin ListView Documentation | GroupHeader Style, When grouping is activated for a ListView , a header row is added for each group. <Label Text="Header" TextColor="Olive" BackgroundColor="Red" If you'd prefer to hide the separator lines on iOS and Android, set the  Now I want the first - and only the first - Header to appear in a different color (than the rest of the Headers - Font Color or Background Color, I don't care) for it to be marked. I can't for the hell of it come up with an idea on how to do it.

Grouping in Xamarin ListView control, BackgroundColor (Color): sets the background of the group header(s). BorderColor (Color): sets the color of the border. BorderWidth (double): defines the width of  I have created a listview in Xamarian Forms using MVVM and binding to create a grouped listview.I would like the listview to have the UITableView Style group which is for iOS. I tried creating this via a custom renderer which I found online, but the result looks wrong as everything is gray. First we will start with the images.

Getting Started with Xamarin ListView control, To customize the view for group header items and binding the Key Remove(​item); } return ImageSource. GroupHeaderTemplate appearance like BackgroundColor of view while expanding the  Transparent background for GroupItem in ListView does cell background color for iOS * Update [iOS] Add possibility to create group header cells with

Forms Bugs, Learn here about getting started with Syncfusion Xamarin ListView Layouts; Sorting; Filtering; Grouping; Selection; Header and Footer; See also To launch the SfListView in iOS, call the SfListViewRenderer.Init() in HeaderTemplate> <​DataTemplate> <Grid BackgroundColor="#4CA1FE" Source = "Delete.png"; grid. Question: Tag: c#,wpf,xaml I'm trying to group my items in Listview. I want to group them by "EventId" property and show EventId as header text. Groupping is working perfect, my items are groupped but the problem is, header text is empty for all groups.

Comments
  • Can you add the code you are currently using?
  • Override group header template
  • @cvanbeek nothing special, I just set IsGroupingEnable="True" and a GroupHeaderTemplate to a DataTemplate which has a Label. On iOS the group headers have a light gray backjground
  • Why's it necessary to wrap the Label with the Grid? Label has BackgroundColor too I think?
  • The label doesn’t have a backgroundcolor property except you take a formattedtext instead. Anyway, if you would set the backgroundcolor of the label via formattedtext you would end up with a colorized box in the size of the label. But your question was to colorize the backgroundcolor of your header. So you have to use a stack layout or grid.
  • Label does have the BackgroundColor property. Label derives from View which in turn derives from VisualElement. James Montenagmo's is just some quick dirty \ example code, we shouldn't take that as a reference. Using the BackgroundColor on the Grid or Label is a very ugly way to make it look like you're changing the section header background color, but in fact you're not.