ahinchman1

fun main() = runBlocking {

    println("runBlocking main")

    val scope = CoroutineScope(Job())
    println("scope created. Create job...")

    val job = scope.launch {
        ...
    }

ahinchman1

fun main() = runBlocking {

    println("runBlocking main")

    val scope = CoroutineScope(Job())
    println("scope created. Create job...")

    val job = scope.launch {
        val task1 = runBlocking {
            println("    task1")

ahinchman1

fun main() = runBlocking {
    println("runBlocking main")

    val task1 = runBlocking {
        println("    task1")
        // simulate a background task
        delay(1000)
        println("    task1: Done background task")
    }

ahinchman1

sealed class ErrorViewState {
    object Content : ErrorViewState()
}

class ErrorViewModel : ViewModel() {
    private val _viewState = MutableLiveData<ErrorViewState>()
    val viewState: LiveData<ErrorViewState> = _viewState

    init {
        _viewState.value = ErrorViewState.Content

ahinchman1

class InvasiveSpeciesMapFragment: Fragment() {

    private val navigator by lazy { (requireActivity() as MainActivity).navigator }
    private val viewModel by viewModels<InvasiveSpeciesMapViewModel>()

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
        inflater.inflate(R.layout.fragment_invasive_species_map, container, false)

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

ahinchman1

class InvasiveSpeciesMapFragment: Fragment() {

   private val navController by lazy {
       Navigation.findNavController(requireActivity(), R.id.fragment_container)
   }

  private val viewModel by viewModels<InvasiveSpeciesMapViewModel> {
       InvasiveSpeciesMapViewModelFactory(navigator = Navigator(navController, resources))
   }

ahinchman1

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools"
  android:background="@color/app_background"
   android:orientation="vertical"
   android:layout_width="match_parent"
   android:layout_height="match_parent">

  <ProgressBar

ahinchman1

sealed class MainActivityViewState {
   object Loading : MainActivityViewState()
   object Content : MainActivityViewState()
}

class MainActivityViewModel: ViewModel() {

  private val _viewState = MutableLiveData<MainActivityViewState>()
   val viewState: LiveData<MainActivityViewState> = _viewState

ahinchman1

enum class Screen(var screen: String) {
   ERROR("Error"),
   INVASIVE_SPECIES_MAP("Invasive Species Map"),
   SPOTTER("Spotter");

   override fun toString(): String = screen
}

class Navigator(
   private val navController: NavController,

ahinchman1

class MainActivity : SingleFragmentActivity() {

   ...

    private val navController by lazy {
        val navHostFragment =
            supportFragmentManager.findFragmentById(R.id.fragment_container) as NavHostFragment
        navHostFragment.navController
    }
    val navigator by lazy { Navigator(navController, resources) }