Building a navigation graph

In Jetpack Compose, navigation is created using a NavHost composable. This hosts NavGraph, which defines your composable destinations; these are defined by routes. Navigating to and from these routes is done using NavHostController, which is passed into NavHost as its parameter name, navController. The builder parameter of NavHost (builder: NavGraphBuilder.() -> Unit) creates NavGraph. Look at the following example:

@Serializable
data object Home
@Serializable
data object Detail
@Composable
fun NavigationApp() {
    val navController = rememberNavController()
    NavHost(
        navController = navController,
        startDestination = Home,
        builder = (
                {
     ...