Nav Host

NavHost.kt

NavHost(navController = navController, startDestination = "profile"){
    composable(route="profile") { Profile(navController) }
    composable(route="friendslist") { FriendsList(navController) }
    composable(route="friendprofile/{profile}", /**/) { 
      FriendProfile(navController, profile) 
    }
}

@Composable
fun Profile(navController: NavController){/*...*/}

@Composable
fun FriendsList(navController: NavController){/*...*/}

@Composable
fun FriendProfile(navController: NavController, profile:Profile?){/*...*/}

data class Profile(val firstName:String, val lastName:String)