tompee26

@Module(includes = [MainActivityModule.FragmentBindings::class])
class MainActivityModule {
    @Module
    interface FragmentBindings {
        @ContributesAndroidInjector(modules = [MainFragmentModule::class])
        fun bindMainFragment() : MainFragment
    }

    @Provides
    @MainActivityScope

tompee26

class MainFragment : Fragment() {

    @Inject
    lateinit var hero : Hero

    override fun onAttach(context: Context?) {
        AndroidSupportInjection.inject(this)
        super.onAttach(context)
        Log.d("InjectionTest", hero.name)
    }

tompee26

@Module
class MainActivityModule {
    @Provides
    @MainActivityScope
    fun provideWarrior(): Warrior = Warrior("Hercules", "Sword")

    @Provides
    @MainActivityScope
    fun provideActivity(mainActivity: MainActivity) : MainActivity = mainActivity

tompee26

@Module()
abstract class ActivityModule {
    @MainActivityScope
    @ContributesAndroidInjector(modules = [MainActivityModule::class])
    abstract fun bindMainActivity(): MainActivity
}

tompee26

@Singleton
@Component(
    modules = [
        AndroidSupportInjectionModule::class,
        ActivityModule::class
    ]
)
interface AppComponent {

    @Component.Builder

tompee26

@Module(subcomponents = [MainActivitySubcomponent::class])
abstract class ActivityModule {
    @Binds
    @IntoMap
    @ClassKey(MainActivity::class)
    abstract fun bindMainActivityInjectorFactory(builder: MainActivitySubcomponent.Builder): AndroidInjector.Factory<*>
}

tompee26

@MainActivityScope
@Subcomponent(modules = [MainActivityModule::class])
interface MainActivitySubcomponent : AndroidInjector<MainActivity> {
    @Subcomponent.Builder
    abstract class Builder : AndroidInjector.Builder<MainActivity>()
}

tompee26

@Module
class MainActivityModule {
    @Provides
    @MainActivityScope
    fun provideWarrior(): Warrior = Warrior("Hercules", "Sword")
}

tompee26

class MainActivity : AppCompatActivity() {

    @Inject
    lateinit var warrior: Warrior

    override fun onCreate(savedInstanceState: Bundle?) {
        AndroidInjection.inject(this)
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

tompee26

data class Warrior(val name: String, val weapon: String)