example.kt

Scaffold(
        snackbarHost = { SnackbarHost(snackbarHostState) },
        bottomBar = {
            NavigationBar {
                val navBackStackEntry by navController.currentBackStackEntryFlow.collectAsState(null)
                val currentDestination = navBackStackEntry?.destination
                NavigationBarItem(
                    selected = currentDestination?.route == Routes.HOME,
                    onClick = {
                        navController.navigate(Routes.HOME) {
                            popUpTo(navController.graph.findStartDestination().id) {
                                saveState = true
                            }
                            launchSingleTop = true
                            restoreState = true
                        }
                    },
                    label = { Text("Home") },
                    icon = {
                        Icon(
                            imageVector = if (currentDestination?.route == Routes.HOME)
                                Icons.Filled.Home
                            else Icons.Outlined.Home,
                            contentDescription = "Home Icon",
                        )
                    }
                )
                NavigationBarItem(
                    selected = currentDestination?.route == Routes.LIBRARY,
                    onClick = {
                        navController.navigate(Routes.LIBRARY) {
                            popUpTo(navController.graph.findStartDestination().id) {
                                saveState = true
                            }
                            launchSingleTop = true
                            restoreState = true
                        }
                    },
                    label = { Text("Library") },
                    icon = {
                        Icon(
                            imageVector = if (currentDestination?.route == Routes.LIBRARY)
                                Icons.Filled.VideoLibrary
                            else Icons.Outlined.VideoLibrary,
                            contentDescription = "Library icon",
                        )
                    }
                )
            }
        }
    ) { it ->
        NavHost(
            navController = navController,
            startDestination = Routes.HOME,
            Modifier.padding(it),
        ) {
            composable(Routes.HOME) {
                HomeTab(
                    onProfile = { dialog = Dialogs.PROFILE },
                    app = app,
                    play = { playerViewModel.play(it) },
                )
            }
            composable(Routes.LIBRARY) {
                LibraryTab(
                    app = app,
                    onProfile = { dialog = Dialogs.PROFILE },
                    play = { playerViewModel.play(it) },
                    startDestination = libraryTabStartDestination,
                )
            }
        }
    }