paulocns

public class ProjectViewModelFactory implements ViewModelProvider.Factory {
    private final ArrayMap<Class, Callable<? extends ViewModel>> creators;

    public ProjectViewModelFactory(ViewModelSubComponent viewModelSubComponent) {
        creators = new ArrayMap<>();
        creators.put(HomeFragmentViewModel.class, () -> viewModelSubComponent.homeFragmentViewModel());
        creators.put(QueryViewModelArc.class, () -> viewModelSubComponent.queryViewModelArc());
    }

    @Override

paulocns

@Subcomponent
public interface ViewModelSubComponent {
    @Subcomponent.Builder
    interface Builder {
        ViewModelSubComponent build();
    }

    HomeFragmentViewModel homeFragmentViewModel();
    QueryViewModelArc queryViewModelArc();
}

paulocns

@Singleton
@Component(modules = {
        ApplicationModule.class,
        NetworkModule.class,
        ShowRepositoryModule.class,
        ResourceRepositoryModule.class
})
public interface ApplicationComponent {
    // expose to sub graphs

paulocns

@Module(subcomponents = {ViewModelSubComponent.class})
public class ApplicationModule {
  
    @Singleton
    @Provides
    ProjectViewModelFactory provideViewModelFactory(
            ViewModelSubComponent.Builder viewModelSubComponent) {

        return new ProjectViewModelFactory(viewModelSubComponent.build());
    }

paulocns

<?xml version="1.0" encoding="utf-8"?>
<layout
    xmlns:android="http://schemas.android.com/apk/res/android">
    <data>

    <variable
        name="viewModel"
        type="package.QueryViewModelArc"/>
    </data>
    <FrameLayout

paulocns

class QueryFragment : BaseFragment() {
  
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val queryViewModelArc = ViewModelProviders.of(this, viewModelFactory).get(QueryViewModelArc::class.java)
    }
}

paulocns

class ProjectViewModelFactory(viewModelSubComponent: ViewModelSubComponent) : ViewModelProvider.Factory {
    private val creators: ArrayMap<Class<*>,() ->ViewModel> = ArrayMap()

    init {
        creators[HomeFragmentViewModel::class.java] = { viewModelSubComponent.homeFragmentViewModel() }
        creators[QueryViewModelArc::class.java] = { viewModelSubComponent.queryViewModelArc() }
    }

    override fun <T : ViewModel> create(modelClass: Class<T>): T {
        var creator: (() ->ViewModel)? = creators[modelClass]

paulocns

@Subcomponent
interface ViewModelSubComponent {
    @Subcomponent.Builder
    interface Builder {
        fun build(): ViewModelSubComponent
    }

    fun homeFragmentViewModel(): HomeFragmentViewModel
    fun queryViewModelArc(): QueryViewModelArc
}

paulocns

@Singleton
@Component(modules = arrayOf(ApplicationModule::class, NetworkModule::class, ShowRepositoryModule::class, ResourceRepositoryModule::class))
interface ApplicationComponent {
    // expose to sub graphs

    fun showRepository(): ShowRepository

    fun resourceRepository(): ResourceRepository

    fun viewModelFactory(): ProjectViewModelFactory

paulocns

class QueryViewModelArc @Inject
constructor(private val mSearchShows: SearchShows?) : ViewModel() {

    val query = MutableLiveData<String>()

    val searchEnabled = MutableLiveData<Boolean>()

    init {
        searchEnabled.value = false
        query.value = ""