相关疑难解决方法(0)

我有这个Dagger 2配置：

AppComponent.kt

@Singleton
@Component(
    modules = [
        AndroidSupportInjectionModule::class,
        AppModule::class,
        ActivityBindingModule::class,
    ]
)
interface AppComponent : AndroidInjector<AppApplication> {
    @Component.Builder
    abstract class Builder : AndroidInjector.Builder<AppApplication>()
}

ActivityBindingModule.kt

@Module
abstract class ActivityBindingModule {
    @ActivityScoped
    @ContributesAndroidInjector(
        modules = [
            MainActivityModule::class,
            FragmentModule::class //a fragment factory for each activity
        ]
    )
    internal abstract fun mainActivity(): MainActivity
}

MainActivityModule.kt

@Module(subcomponents = [LoginFragmentSubcomponent::class])
abstract class MainActivityModule {
    //uncommenting this works fine but Fragment can't be scoped
    //@Binds
    //@IntoMap
    //@FragmentKey(LoginFragment::class)
    //abstract fun bindLoginFragment(loginFragment: LoginFragment): Fragment

    //...other things which …