组合导航：旋转后，导航模型中的最后一个对象被添加到后台堆栈中

Question

我的问题与撰写导航和屏幕旋转有关。 屏幕旋转后，出于某种原因，据我所知，重新创建了可组合项并采用了 NavigationViewModel 的最新值，并将额外的可组合项/屏幕添加到后台堆栈中。 轮换后应该怎么做才能防止将新的可组合项添加到后台堆栈中？

@Composable
fun NavRoot() {
    val navController = rememberNavController()
    val viewModelStoreOwner = checkNotNull(LocalViewModelStoreOwner.current) {
        "No ViewModelStoreOwner was provided via LocalViewModelStoreOwner"
    }
    navigationViewModel = hiltViewModel<NavigationViewmodel>(viewModelStoreOwner = viewModelStoreOwner)
    NavigationHost(
        navController = navController,
        keys = navigationViewModel.keys,
        navigationViewModel = navigationViewModel
    )
}

@Composable
internal fun NavigationHost(
    navController: NavHostController,
    keys: List<NavigationKey>,
    navigationViewModel: NavigationViewmodel,
) {
    if (keys.isEmpty()) return

    val startDestination = keys.first().key
    val screenState by navigationViewModel.state.collectAsState(...)
    when (val currentScreenState = screenState) {
        ...
        navController.navigate(screenState.key)
    }

    NavHost(navController = navController, startDestination = startDestination) {
        keys.forEach { screen ->
            composable(screen.key) {
                NavigationRouter(
                    screen = screen,
                )
            }
        }
    }
}

我试着玩记住导航控制器，不幸的是它没有帮助:(