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Components -- - Created at - - - Destroyed at
SingletonComponents - - Application#Oncreate() - - - Application#Destroyed()
ActivityRetainedComponents - Activity#Oncreate() - Activity#OnDestroy()
ViewModelComponents - - ViewModel create - - ViewModel destroy
ActivityComponents- - Activity#Oncreate() - -Activity#OnDestroy()
FragmentComponents - - Fragment#OnAttached() - - Fragment#OnDettached()
ViewComponents - - View#super() - - - - - View destroy
ViewWithFragmentComponent - - View#super() - -- View destroy
ServiceComponent - - Service#OnCreate()- - Service#OnDestroy()

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// As a dependency of a constructor-injected class.
class ExampleServiceImpl @Inject constructor(
  @AuthInterceptorOkHttpClient private val okHttpClient: OkHttpClient
) : ...

// At field injection.
@AndroidEntryPoint
class ExampleActivity: AppCompatActivity() {

  @AuthInterceptorOkHttpClient

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@Module
@InstallIn(ActivityComponent::class)
object AnalyticsModule {

  @Provides
  fun provideAnalyticsService(
    @AuthInterceptorOkHttpClient okHttpClient: OkHttpClient
  ): AnalyticsService {
      return Retrofit.Builder()
               .baseUrl("https://example.com")

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@Module
@InstallIn(SingletonComponent::class)
object NetworkModule {

  @AuthInterceptorOkHttpClient
  @Provides
  fun provideAuthInterceptorOkHttpClient(
    authInterceptor: AuthInterceptor
  ): OkHttpClient {
      return OkHttpClient.Builder()

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@Qualifier
@Retention(AnnotationRetention.BINARY)
annotation class AuthInterceptorOkHttpClient

@Qualifier
@Retention(AnnotationRetention.BINARY)
annotation class OtherInterceptorOkHttpClient

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interface AppNavigation{
  fun navigateTo(screens: Screens)
}


class AppNavigationImpl @Inject constructor(
  ...
) : AppNavigation{ ... }

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@Module
@InstallIn(ActivityComponent::class)
object AnalyticsModule {

  @Provides
  fun provideAnalyticsService(
    // Potential dependencies of this type
  ): AnalyticsService {
      return Retrofit.Builder()
               .baseUrl("https://example.com")

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@AndroidEntryPoint
class ExampleActivity : AppCompatActivity() { ... }

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android {
    ...
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
}

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plugins {
    kotlin("kapt")
    id("dagger.hilt.android.plugin")
}

android {
    ...
}

dependencies {