[Bug] [Android] Entry MaterialEntryRenderer BoxBackgroundMode not working

[MhAllan]

Description

I am trying to create custom renderer from the material renderer of Entry, trying to remove the terribly designed underline. So anything you could imagine or find online, from setting background to null to pain background drawable, .. etc .. all is not going to work.

The only thing that has effect is SetBoxBackgroundMode but it is not working properly

Steps to Reproduce

public class CustomEntryRenderer : MaterialEntryRenderer
    {
        public CustomEntryRenderer(Context context) : base(context)
        {
        }
        protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
        {
            base.OnElementChanged(e);

            if(Control != null)
            {
                Control.SetBoxBackgroundMode(0);
            }
        }
    }

Expected Behavior

To change entry border line

Actual Behavior

setting it to zero, supposed to remove borders, it does nothing
setting it to 1, supposed to set the underline, it is there all the time without this setting
setting it to 2, supposed to make outlined, it outline the left, top, right sides and leaves the bottom not underlined

Basic Information

XF 4.6.0.847
Android 9 and 10

[Mikilll94]

I also have this problem. I just want to have a regular entry from Material Design, NOT filled.

[johnbmangold]

@Mikilll94

if you use Control.SetBoxBackgroundMode(Google.Android.Material.TextField.TextInputLayout.BoxBackgroundNone); it'll give you the look you're going for.

[Mikilll94]

@johnbmangold
Unfortunately, this is just removing the background color (which I can do also from XAML by setting the background color to white).

However, the left, top, and bottom margins are still present. In Google Material Design there are many types of entries. I just want to use "regular" entry instead of "filled".

[averlius]

This is somehow related to something I'm looking for, I'm actually trying to have all the borders visible, but I just can't, even tried to create a shape and added to the control and nothing.

[talmurshidi]

If you are looking for something to remove the underline from entry then you can check this answer remove entry underline
This is working with Xamarin Forms Visual Material 4.8+

[assembly: ExportRenderer(typeof(Entry), typeof(EntryMaterialRendererAndroid), new[] { typeof(VisualMarker.MaterialVisual) })]
namespace XFTest.Droid.Renderers
{
	public class EntryMaterialRendererAndroid : MaterialEntryRenderer
	{
		public EntryMaterialRendererAndroid(Context context) : base(context) { }
		protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
		{
			base.OnElementChanged(e);

			if (Control != null)
			{
				Control.BoxStrokeWidth = 0;
				Control.BoxStrokeWidthFocused = 0;
			}
		}
	}
}