Component used: Navigation (Wear/Compose)

Version used: implementation "androidx.wear.compose:compose-navigation:1.0.0-alpha13"

Devices/Android versions reproduced on: N/A

Description:

A common pattern when using Compose + Compose Navigation to build a mobile app is to observe the current back stack entry (NavHostController.currentBackStackEntryAsState()) to determine what parts of the scaffold should be visible for certain screens.

You can see an example of this with the bottom navigation in this guide.

However, this method doesn't exist in Wear's Navigation version of the library. Can we add it?

I specifically want to only show the vignette in my scaffold when one of the destinations -> routes is a scrollable screen.

This is what I want to do:

Scaffold(
    timeText = {},
    vignette = {
        // Coming from rememberSwipeDismissableNavController()
        val currentRoute: String? =
            swipeDismissableNavController.currentBackStackEntryAsState()?.destination?.route
        
        // Only show vignette for screens with scrollable content.
        if (currentRoute == Screen.WatchList.route) {
            CustomVignette(
                visible = vignetteVisiblePreference,
                vignettePosition = VignettePosition.TopAndBottom
            )
        }
    },
    positionIndicator = {}
) { }

Let me know if you need any more information. I was hoping to add this code to the advanced sample. Thanks!

Issue 212739653

Links (4)

Issue metadata