Button always displays on top in FrameLayout

Question

I have FrameLayout like this:

Answer 1

As the official android documantation points out:

FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that's scalable to different screen sizes without the children overlapping each other. You can, however, add multiple children to a FrameLayout and control their position within the FrameLayout by assigning gravity to each child, using the android:layout_gravity attribute.

It's better if you put your Button and Textview in a RelativeLayout inside the FrameLayout like: