Retrofit: How to send a POST request with constant fields?

Question

I want to sent a simple POST request with one actual parameter:

@POST(\"/token\")
@FormUrlEncoded
void extendSession(@Field(\"refresh_token\")final String refres         


        

Answer 1

Instead of a String, your interface could accept a GrantType object which has factory methods for different grant_types. These factory methods would set the client_id, client_secret, and grant_type fields.

@POST("/oauth/token")
Call extendSession(@Body GrantType grantType);