MainActivityComponent.java

@ActivityScope
@Subcomponent(
        modules = MainActivityComponent.MainActivityModule.class
)
public interface MainActivityComponent extends ActivityComponent<MainActivity> {

    @Subcomponent.Builder
    interface Builder extends ActivityComponentBuilder<MainActivityModule, MainActivityComponent> {
    }

    @Module
    class MainActivityModule extends ActivityModule<MainActivity> {
        MainActivityModule(MainActivity activity) {
            super(activity);
        }
    }
}