wearscaffold.kt

WearAppTheme {
        Scaffold(
            timeText = {
                if (displayTime(currentScreen, scalingLazyListState)) {
                    TimeText()
                }
            },
            vignette = {
                Vignette(vignettePosition = VignettePosition.TopAndBottom)
            },
            positionIndicator = {
                if (scalingLazyListState.isScrollInProgress) {
                    PositionIndicator(scalingLazyListState = scalingLazyListState)
                }
            }
        ) {
            WearNavHost(navController = navController, scalingLazyListState)
        }
    }
    
    private fun displayTime(currentScreen: WearScreen, scalingLazyListState: ScalingLazyListState): Boolean {
    return when (currentScreen) {
        WearScreen.LIST -> {
            return !scalingLazyListState.isScrollInProgress &&
                scalingLazyListState.layoutInfo.visibleItemsInfo.firstOrNull()?.index == 0
        }
        else -> true
    }
}