Android Retrofit 2 - GET - error: element value must be a constant expression

Hi,

I have set GET for Retrofit2 in my android application as follows:

@GET(Constants.API_URL + Constants.TYPE)
Call> getApiDatas(@Header("X-AUTH-TOKEN") String token);
.......
Call> call = APIService.getApiDatas(Constants.TOKEN_KEY);
.......

And it works. However, I need to get a dynamic URL into the GET.

If instead of static final variables (public static final String)
@GET(Constants.API_URL + Constants.TYPE)

I will use a non-static variable here via the class Variables:
@GET(Constants.API_URL + Constants.TYPE)

So I get an error:

error: element value must be a constant expression

@GET(Constants.API_URL + Variables.getType())


Can anyone advise me how to get a dynamic URL variable into the GET URL for Retrofit2 in Android Studio?

Thanks

REPLY

Hi,

if in Android Studio you need to get a non-static variable for a dynamic URL for an Android application using Retrofit2 in GET, then do it like this, it works!

@GET
Call> getApiDatas(@Header("X-AUTH-TOKEN") String token, @Url String url);
.......
Call> call = APIService.getApiDatas(Constants.TOKEN_KEY, Constants.TYPE + Variables.getType());
.......