How does one navigate screens controlled by bottom navigation and the bottom nav is in a screen in N...

# compose

[Tanaka]

How does one navigate screens controlled by bottom navigation and the bottom nav is in a screen in NavHost. The documentation it's pretty vague in this aspect. They implement a NavHost wc results in ViewModelStore should be set before setGraph call Exception

[Ian Lake]

he bottom nav is in a screen in NavHost.

This doesn't make that much sense - generally the bottom nav is outside of the NavHost, which is what the docs show. What are you trying to accomplish?

[Ian Lake]

We've seen one issue with that exception, but it was with someone nesting one NavHost within another NavHost but reusing the same NavController instance (you can't do that: each level needs its own NavController)

[Tanaka]

@Ian Lake So I setup the main screen (in MainActivity) with NavHost wc wraps whole app. The idea it's to navigate to another screen wc has bottom nav. In docs, I saw another NavHost inside the screen hosting bottom nav. But the thing is, if I do that, setGraph exception is raised.

[Ian Lake]

That's absolutely not what the docs do at all - can you link to where you think it is doing that? We always recommend a single NavHost, where you hide and show your bottom nav based on what destination you are on

[Tanaka]

@Ian Lake Maybe I read wrong. I put NavHost at a higher level 😅, instead of Nav controller

[Tanaka]

https://developer.android.com/jetpack/compose/navigation