Is there a way, to get current `NavHostController`...

# compose

[Peter]

Is there a way, to get current NavHostController route as KClass ?

For example:

private sealed interface Destination {
    @Serializable data object Home : Destination
    @Serializable data object Settings : Destination
}

val controller = rememberNavController()
NavHost(navController = controller, startDestination = Destination.Home) {
    composable<Destination.Home> {
        // TODO
    }
    composable<Destination.Settings> {
        // TODO
    }
}

LaunchedEffect(controller.currentDestination) {
    // How to get current route of type [Destination]?
}

[Ian Lake]

The pattern you're showing doesn't actually tell us what problem you are trying to solve, so this might be more of an XY Problem kind of situation, but the API for determining what KClass you are on is `hasRoute`: https://kotlinlang.slack.com/archives/C04TPPEQKEJ/p1715603846612999?thread_ts=1715593577.533989&cid=C04TPPEQKEJ

[Peter]

I'm trying to select item in bottom navigation bar. I see hasRoute() can be used to solve my problem, thanks.

I was trying to do it a bit differently. I basically wanted to do something like following, while keeping NavHostController source of truth for current Destination

private sealed interface Destination {
    @Serializable data object Home : Destination
    @Serializable data object Settings : Destination
}

val controller = rememberNavController()
NavHost(navController = controller, startDestination = Destination.Home) {
    composable<Destination.Home> {
        // TODO
    }
    composable<Destination.Settings> {
        // TODO
    }
}

val currentDestination = controller.somehowGetCurrentDestination()
MyBottomNavigation(
    currentDestination = currentDestination,
    onSelectDestination = controller::navigate,
)

[Ian Lake]

If you look at our bottom nav example in the docs, you'll note it uses the type safe APIs: https://developer.android.com/develop/ui/compose/navigation#bottom-nav

[Ian Lake]

There's no reason you couldn't move the code that is inline there for selected and onClick into a style close to what you have for currentDestination and onSelectDestination

[Peter]

ah, okay, I missed that. Thank you!