Retrofit 2 void return

Question

In Retrofit 2, service methods representing http methods must return Call.

Call is a generic which must take the type representing the return object of the http method.

For example,

@GET("/members/{id}")
Call<Member> getMember(@Path("id") Long id);

For http methods such as delete, no content is returned. In cases like this, what parameter should be provided to Call?

Possible duplicate of [How can I handle empty response body with Retrofit 2?](https://stackoverflow.com/questions/33228126/how-can-i-handle-empty-response-body-with-retrofit-2) — animalito maquina, Sep 19 '19 at 11:49

score 37 · Accepted Answer · answered Feb 22 '16 at 18:15

37

Just set Void as the Type.

@DELETE("/members/{id}")
Call<Void> removeMember(@Path("id") Long id);

answered Feb 22 '16 at 18:15

sorianiv

And how does one then setup the callback? – Zapnologica Jan 08 '17 at 19:05
2

@Zapnologica .enqueue(new Callback() { public void onResponse(Call call, Response response) { ... } public void onFailure(Call call, Throwable t) { ... } }); – sorianiv Jan 08 '17 at 19:11

score 1 · Answer 2 · answered Mar 25 '19 at 20:51

If you are using Kotlin/Retrofit/Rxjava/RxKotlin

@Headers(JwtKeyTokenWithValue)
@DELETE("/members/{id}")
fun removeMember(@Path("id") Long id): Completable

And can be subscribed this way

apiManager
       .removeMember()
       .subscribe(
           { Timber.i { "Member Removed!" } },
           { t -> Timber.e(t)})

2 Answers2