k0siara

@Composable
fun NavHostExample() {
   val navController = rememberNavController()
   NavHost(navController, startDestination = "firstScreen") {
      composable(route = "firstScreen") {
         FirstScreen(navController)
      }
      composable(route = "secondScreen") {
         SecondScreen()
      }

k0siara

@Composable
fun NavHostExample() {
   val navController = rememberNavController()
   NavHost(navController, startDestination = "firstScreen") {
      composable(route = "firstScreen") {
         FirstScreen()
      }
      composable(route = "secondScreen") {
         SecondScreen()
      }

k0siara

object NavigationDestinations {
    const val firstScreen = "firstScreen"
    const val secondScreen = "secondScreen"
    const val thirdScreen = "thirdScreen"
}

interface NavigationAction {
    val destination: String
    val parcelableArguments: Map<String, Parcelable>
        get() = emptyMap()                              // No parcelable arguments as default

k0siara

interface Navigator {
    val navActions: StateFlow<NavigationAction?>
    fun navigate(navAction: NavigationAction?)
}

class ComposeCustomNavigator : Navigator {
    private val _navActions: MutableStateFlow<NavigationAction?> by lazy {
        MutableStateFlow(null)
    }
    override val navActions = _navActions.asStateFlow()

k0siara

val appModule = module {
    single<Navigator> {
        ComposeCustomNavigator()
    }

    viewModel {
        FirstSceenViewModel(
            navigator = get()
        )
    }

k0siara

import androidx.compose.runtime.Composable
import androidx.compose.runtime.State
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.remember
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.flowWithLifecycle
import kotlinx.coroutines.flow.Flow

@Composable

k0siara

class FirstScreenViewModel(
    private val navigator: Navigator
) : ViewModel {

  ...
  
  fun navigateExample() {
      navigator.navigate(NavigationActions.FirstScreen.firstScreenToSecondScreen())
  }
  

k0siara

@Composable
fun NavHostExample(
   navController: NavHostController = rememberNavController(),
   navigator: Navigator = get(),
) {
   val lifecycleOwner = LocalLifecycleOwner.current
   val navigatorState by navigator.navActions.asLifecycleAwareState(
        lifecycleOwner = lifecycleOwner,
        initialState = null
   )

k0siara

NavHost(startDestination = "profile/{userId}") {
    ...
    composable(
        "profile/{userId}",
        arguments = listOf(navArgument("userId") { type = NavType.StringType })
    ) {...}
}

k0siara

composable(
    "profile?userId={userId}",
    arguments = listOf(navArgument("userId") { defaultValue = "me" })
) { backStackEntry ->
    Profile(backStackEntry.arguments?.getString("userId")) { friendUserId ->
        navController.navigate("profile?userId=$friendUserId")
    }
}