Answers for "retrofit2 tutorial"

retrofit android

def retrofit_version = "2.9.0"
implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"

retrofit android

implementation 'com.squareup.retrofit2:retrofit:2.9.0'

retrofit

public interface MyApiEndpointInterface {
    // Request method and URL specified in the annotation
    // Callback for the parsed response is the last parameter

    @GET("users/{username}")
    void getUser(@Path("username") String username, Callback<User> cb);

    @GET("group/{id}/users")
    void groupList(@Path("id") int groupId, @Query("sort") String sort, Callback<List<User>> cb);

    @POST("users/new")
    void createUser(@Body User user, Callback<User> cb);
}