Need help with state options in binding

[BeanzBE (Lennert Coopman)]

Starting point:
I want to add options to my channel based on the presets/favourites, other devices in the network, …

I have found the following thread regarding dynamic state options.
The documentation is bit short but better than nothing
I also looked at the following bindings : KODI, Squeezebox, onewire, Sonos but I can’t figure what’s going wrong.

I compared the code and added the class and references.
However, now I get the following error in VS Code:
HandlerFactory.java:[43,1679] The @NonNull field stateDescriptionProvider may not have been initialized.

Also I notice that the color scheme is not respected.
Source can be found here
Any advice where to look? I spent already a few hours on testing but each I get stuck at the same point.

Thx

[cweitkamp (Christoph Weitkamp)]

Hi Lennert,

Have a look here - what is missing in your code is explained in the example at the bottom of the section:

Therefore the ThingHandlerFactory has to reference the bundle instance and pass it to the handler.

[hilbrand (Hilbrand Bouwkamp)]

Do you plan to support multiple languages in your state descriptions? Because you added the i18n code (although I suspect you just copied the code and have no idea why it’s there )

To add to Christoph comment. You need to add @Reference:

  @Reference
  private yamahamusiccastStateDescriptionProvider stateDescriptionProvider;

Also please respect java naming conventions for class and field names.

[BeanzBE (Lennert Coopman)]

Thanks for the pointers already.

I do know what i18n code is for but getting a bit desperate. So this part is there as I saw it in the other bindings and in the documentation.
The @Reference part is in there but still getting the same message.

Regarding the naming conventions: will do in a later stage. Currently looking to get this working.
Perhaps do tabula rasa and start over (once more )

[hilbrand (Hilbrand Bouwkamp)]

To get ride of the null message change the following as the constructor:

private final yamahamusiccastStateDescriptionProvider stateDescriptionProvider;

@Activate
public yamahamusiccastHandlerFactory(@Reference yamahamusiccastStateDescriptionProvider stateDescriptionProvider) {
    this.stateDescriptionProvider = stateDescriptionProvider;
}

[BeanzBE (Lennert Coopman)]

You rock!
Green build after these changes.

I could not have found this one by myself. As said, I will work on coding guidelines.
Now try to get the options updated.
Thx again