Hello, can I combine fragment navigation with compose navigation in android? I saw that the builder...

# compose

[Dragos Rachieru]

Hello, can I combine fragment navigation with compose navigation in android?

I saw that the builder has these methods: composable and fragment

Can I use both to make my app use compose navigation while having support for existing fragments?

[Joel Denke]

Its possible but dont recommend it 🙂 Also feels like #compose-android but want to share code with other platforms as well?

[Dragos Rachieru]

I don't want to share code with other platforms, only android

[Dragos Rachieru]

Sorry, I asked in the wrong place

[Joel Denke]

I think its possible to share same NavController as compose using same as androidx navigation for regular views.
I havent mixed NavHost and Fragment Host View thing myself, so not sure how behaves. But if just having one fragment and using navigation inside it works. More complex if mixing nested navigation between compose and fragments however.

[Joel Denke]

See https://developer.android.com/jetpack/compose/navigation#interoperability

[Joel Denke]

The main concept would be:

override fun onCreateView( /* ... */ ) {
    setContent {
        MyScreen(onNavigate = { dest -> findNavController().navigate(dest) })
    }
}

[Dragos Rachieru]

Yeah, I was trying to combine both and not use fragments for compostable entries

[Dragos Rachieru]

@Composable
fun MyNav(fragmentNavigator: FragmentNavigator) {
  val navController = rememberNavController(fragmentNavigator)
  NavHost(navController, "1") {
    composable("1") {...}
    fragment<MyFragment>("2")
  }
}

[Dragos Rachieru]

Tried it without passing the fragment navigator but it failed, now I don't know how to create a fragment navigator to be used in this case.

[Joel Denke]

Oh Fragment inside compose not sure if possible in that direction. I would guess it works for dialogs or activity however 🙂

[Joel Denke]

I would guess need some layer back to host Activity creating the Fragment with FragmentManager and inflate back to compose navigation, but not recommend it.
Maybe exists any util, but none I am aware of.

[Dragos Rachieru]

Ok, thanks!