AppBarLayout with recyclerView in nested fragment

Question

As images are always better than words, I present to you my current layout.

The toolbar/tabs is in an activity.xml with a viewPager, and the recycle

Answer 1

What's with all the crazy code/layouts?

In the fragments where you don't want the toolbar to scroll, do this in the fragment's onCreateView():

    recyclerView.setNestedScrollingEnabled(false);