Toothpickを使ったActivity, Fragment, ViewModelでの基本的な流れ

build.gradle

kapt {
  generateStubs = true
  arguments {
    arg('toothpick_registry_package_name', "${android.defaultConfig.applicationId}.toothpick")
  }
}

dependencies {
  compile "com.github.stephanenicolas.toothpick:toothpick-runtime:$toothpick_ver"
  kapt "com.github.stephanenicolas.toothpick:toothpick-compiler:$toothpick_ver"
}

HomeFragment.kt

class HomeFragment : Fragment() {

  private lateinit var scope: Scope
  private lateinit var vm: HomeViewModel
  @Inject lateinit var dialogDelegation: DialogDelegation

  override fun onCreate(savedInstanceState: Bundle?) {
    scope = Toothpick.openScopes(activity.application, activity, this)
    scope.installModules(FragmentModule(this))
    super.onCreate(savedInstanceState)
    Toothpick.inject(this, scope)
    vm = ViewModelProviders.of(this).get(HomeViewModel::class.java)
  }
}

HomeViewModel.kt

class HomeViewModel(application: Application) : AndroidViewModel(application) {

  @Inject lateinit var repository: ModelRepository

  private val scope = Toothpick.openScopes(application, this)

  init {
    scope.installModules(ViewModelModule(this))
    Toothpick.inject(this, scope)
  }

  override fun onCleared() {
    super.onCleared()
    Toothpick.closeScope(scope)
  }
}

MainApplication.kt

import your.application.package.toothpick.FactoryRegistry
import your.application.package.toothpick.MemberInjectorRegistry

class MainApplication : Application() {

  override fun onCreate() {
    super.onCreate()

    Toothpick.setConfiguration(Configuration.forProduction().disableReflection())
    //この２つの引数は、自動生成されたRegistryを渡す。toothPickにあるRegistryを渡しても駄目
    MemberInjectorRegistryLocator.setRootRegistry(MemberInjectorRegistry())
    FactoryRegistryLocator.setRootRegistry(FactoryRegistry())

    Toothpick.openScope(this).installModules(ApplicationModule(this))
  }
  
  override fun onTerminate() {
    super.onTerminate()

    Toothpick.closeScope(this)
  }

}

Module.kt

class ApplicationModule(val application: Application) : Module() {
  val local = LocalCache(application)

  init {
    bindModelRepository()
  }

  private fun bindModelRepository() {
    val webApi = WebApi(BuildConfig.API_BASE_URL, local)
    val repository = ModelRepositoryImp(webApi, local)
    bind(ModelRepository::class.java).toInstance(repository)
  }
}

class ActivityModule(val activity: Activity) : Module(){
  init {
    bindNavigator()
    bindDialog()
  }

  private fun bindNavigator(){
    bind(Navigator::class.java).toInstance(Navigator(activity))
  }

  private fun bindDialog(){
    bind(DialogDelegation::class.java).toInstance(DialogDelegationImpl(activity))
  }
}
class FragmentModule(val fragment: Fragment) : Module(){
}
class ViewModelModule(val viewModel: ViewModel) : Module(){
}

SplashActivity.kt

class SplashActivity : AppCompatActivity() {

  private lateinit var scope: Scope
  @Inject lateinit var navigator: Navigator

  override fun onCreate(savedInstanceState: Bundle?) {
    scope = Toothpick.openScopes(application, this)
    scope.installModules(ActivityModule(this))
    super.onCreate(savedInstanceState)
    Toothpick.inject(this, scope)
    setContentView(R.layout.activity_splash)

    Observable.create<Void> { source ->
      source.onComplete()
    }.delay(3, TimeUnit.SECONDS).subscribe({}, {}, {
      navigator.goToMain()
      finish()
    })
  }
}