Android Retrofit Parameterized @Headers

Question

I am using OAuth and I need to put the OAuth token in my header every time I make a request. I see the @Header annotation, but is there a way to make it parameterized so i can pass in at run time?

Here is the concept

@Header({Authorization:'OAuth {var}', api_version={var} })

Can you pass them in at Runtime?

@GET("/users") void getUsers(     @Header("Authorization") String auth,      @Header("X-Api-Version") String version,      Callback<User> callback ) 

Answer 1

Besides using @Header parameter, I'd rather use RequestInterceptor to update all your request without changing your interface. Using something like:

RestAdapter.Builder builder = new RestAdapter.Builder()     .setRequestInterceptor(new RequestInterceptor() {         @Override         public void intercept(RequestFacade request) {             request.addHeader("Accept", "application/json;versions=1");             if (isUserLoggedIn()) {                 request.addHeader("Authorization", getToken());             }                             }     }); 

p/s : If you are using Retrofit2, you should use Interceptor instead of RequestInterceptor

Since RequestInterceptor is not longer available in Retrofit 2.0