Android scrollview hides gradient shadow

I have ScrollViewinvested in LinearLayout. Android has this gradient shadow from the top ScrollViewthat I want to disconnect.

I know that you can turn off the shadow under the heading if you change the subject using windowContentOverlay, does anyone know of a similar solution for ScrollView?

things I've tried: fadingEdge, overScrollmode, windowContentOverlay.

As you can see in the figure below, a shadow is where the beginning is ScrollView, above ScrollViewis TextView.