Hide Navigation Bar on actions (ie when scrolling)

[amrnt]

I'm trying to figure out if I can hide/show the nav bar after it rendered.

[charpeni]

At this time, we can't modify or update the navigation bar without changing scene/route.

But i'm agree with you, we should have the possibility to update the navigation bar from the current scene. Hide progressively the navigation bar while scrolling will be awesome.

PRs are welcome :)