Android Annotations - Injecting a list of superclass type

Question

I am trying to achieve the following Spring code using Android Annotations:

@Autowired
public initHandlerList(List<Handler> handlerList) {
   // Do stuff with the list ...
}

I tried using both an interface and a class.

Bean definition:

@EBean
public AbstractHandler implements Handler {}

Trying to inject:

@Bean
public initHandlersList(List<AbstractHandler> handlersList) {
  // Do stuff with the list ...
}

But always got the following error:

Error:(20, 5) error: org.androidannotations.annotations.Bean can only be used on an element annotated with @org.androidannotations.annotations.EBean

So I guess since the list itself is not annotated with @EBean it can't be used as a Bean... any way to implement this using Android Annotations?

Thanks !

Answer 1

Sorry I can't comment but my reputation is too low.

I read the wiki and under method based injection I saw how you inject the beans. What I can see in your code is that you are indeed creating a EBean with an AbstractHandler object however you are trying to inject a List object which has not been annotated with @EBean you can either delete the List<> and just use the AbstractHandler or you can extend a List implementation (Like ArrayList) and annotate it with @EBean.

@EBean
public class InjectableArrayList<T> extends ArrayList<T>{}

Hope this helps.