With all the Android development tools greatness, especially as of version 21, the graphical layout editor is a powerful tool to have visual control over a layout with fragm
It looks, according to the documentation for FrameLayout, like there is an attribute you can use on the FrameLayout tag to put a drawable in the foreground of the ViewGroup.
You could use this to see the FrameLayout whilst you are setting up your view. I often just put a colour in so I can see where it is relative to the background and other Views.