Retrofit - @Body parameters cannot be used with form or multi-part encoding

Question

I m trying to make a request in which I want to include a Header , a form-urlencoded field and a json body. My Retrofit interface is as follows

@FormUrlEncoded @POST("/api/register") Observable<RegisterResponse> register(     @Header("Authorization") String authorization,      @Field("grant_type") String grantType,      @Body RegisterBody body ); 

When I make this request I get back exception @Body parameters cannot be used with form or multi-part encoding.
I have also tried with the @Multipart annotation:

@Multipart @FormUrlEncoded @POST("/api/register") Observable<RegisterResponse> register(     @Header("Authorization") String authorization,      @Part("grant_type") TypedString grantType,      @Body RegisterBody body ); 

and I get an IllegalArgumentException and only one encoding annotation is allowed.

Answer 1

maybe this could help some people, if you have this trouble, you should remove @FormUrlEncoded of your interface. Hope this helps.