无法在Dagger 2中使用SubComponent注入类

Question

我正在尝试在一个项目中添加Dagger 2。我已经创建了3个组件

AppComponent (the primary one)
RetrofitComponent (Dependent component works fine)
ControllerComponent (Subcomponent, not injecting properly)

这是我的AppComponent

@ApplicationScope
@Component(modules = [ApplicationModule::class, PrefModule::class])
interface AppComponent {

fun inject(instance: AppInstance)

fun getAppPref(): AppPreference

fun newControllerComponent(controllerModule: ControllerModule): ControllerComponent
}

这是我的ControllerComponent

@UIScope
@Subcomponent(modules = [ControllerModule::class])
interface ControllerComponent {

fun injectActivity(activity: BaseActivity)

fun injectDialog(dialog: BaseDialog)
}

ControllerModule

@Module
class ControllerModule(activity: FragmentActivity) {
var mActivity: FragmentActivity

init {
    mActivity = activity
}

@Provides
fun getContext(): Context {
    return mActivity
}

@Provides
fun getActivity(): Activity {
    return mActivity
}

@Provides
fun getFragmentManager(): FragmentManager {
    return mActivity.supportFragmentManager
}

@Provides
fun getDialogManager(fragmentManager: FragmentManager): DialogsManager 
{
    return DialogsManager(fragmentManager)
}

@Provides
fun getDialogsFactory(): DialogsFactory {
    return DialogsFactory()
}

}

注入活动运行良好，但当我尝试注入Dialog时，它从未注入过

 controller.injectDialog(singleDialog)

我的整个代码都在这里，Github link。我需要一些帮助。我没有做什么或做错了什么，我不能从子组件注入。

Answer 1

要在给定的类上使用字段注入，您需要指定具体的类型，而不是它的超类。

@UIScope
@Subcomponent(modules = [ControllerModule::class])
interface ControllerComponent {

    //fun injectActivity(activity: BaseActivity)

    //fun injectDialog(dialog: BaseDialog)

    fun inject(activity: SomeSpecificActivity)

    fun inject(activity: SomeOtherActivity)

    fun inject(dialog: SomeSpecificDialog)

    fun inject(dialog: SomeOtherDialog)
}

Answer 2

注入是有效的，但是您没有在SingleClickDialog类中注入任何内容，请记住，inject (类:类)方法是为了让它知道该类将被注入，但是您需要将需要注入的元素放入带有注释@Inject的类中，还需要在ControllerModule中添加它的提供者