Android: Cannot style spinner divider

Question

I\'m trying to create a theme for my first Android app, and it is driving me round the bend. I finally managed to figure out how to style items in a dropdown list, but now I

Answer 1

You could add a horizontal line to the dropdown layout you use, which would effectively create a divider.

EDIT

Some further searching found this:

SO Answer

Which basically says what you show you are trying to do above should work... although it mentions setting that style in your activity theme and you don't mention doing that.