Android Question Spinner not responding to colordrawable

[ToolboxZX]

In what instance would a spinner not respond to a ColorDrawable?

Consider the following code where a spinner "MySpinner" exists:

Dim cdw as Color Drawable
cdw.Initialize2 (Colors.Transparent, 10,3,Colors.Red)
MySpinner.Background = cdw

Adding this code on 3 devices produces the desired result. A transparent background with a red border around the spinner. But on a Samsung GalaxyTab A it appears to ignore it completely. Android version is 6.0.1

Is there a method for achieving the desired results?

 

[Erel]

The spinner uses an adapter to create the interfaces of the selected item and the list of items.
You shouldn't replace the background drawable as it will be overridden by the adapter.

 

[ToolboxZX]

Understood. Is there any way to configure that adaptor then to apply a border to the spinner?

 

[Erel]

No. It only allows changing the text color.

 

[ToolboxZX]

Understood. Thank you.