[iOS] Feature Request: hidesBottomBarWhenPushed

[sharplet]

I'm hoping that with the new support for native tab bars on iOS, it might be possible for to enable support for a small feature that's been available on iOS since the beginning: hidesBottomBarWhenPushed.

I'm imagining a screen option that would allow an individual screen when pushed to a stack inside a native tab layout to hide the tab bar. I'm working on a text editing UI right now where this would be very useful: even when the keyboard is dismissed, I'd like the tabs to remain hidden until you navigate back to the root of the UI.

I'm also interested in working on the implementation myself, but could use some guidance as to how this should be implemented!

[kkafar]

Hey, I think this is a good idea.

As I've just pointed out here, we have other priorities atm. but we'll be willing to look into this some time soon.

I'm not that sure, whether this API applies directly to the UITabBar, this is something that needs to be verified, but the idea sounds promising.

For implementation plan, if you wanna start before we get into it, I'd start with hardcoding this flag to true & observing what happens - what breaks, what works, and what needs some attention. Then its pretty straightforward:

1. Expose possibility of controlling value of this by exposing a prop on native component. This should be exposed on RNSScreen component.
2. Fix any introduced regression
3. Stabilise the behaviour.

That's pretty vague, I know, but you should be able to find our PR where we add other props / features & get a grasp of how its done from there.