hey, I've got a problem: I'm trying to use Retrofit with the Kotlin Coroutine-integration (just make the functions in the

API

interface

suspend

and return the data directly, without being wrapped in

Call

) but as soon as i try to do this, i get

java.lang.IllegalArgumentException: Could not locate call adapter for class java.lang.Object.

any ideas? if i use the

Call

wrapped way it works

Make sure you're using retrofit 2.6.0+

Could you show declaration of this Retrofit method

Oh you're right - my mistake!

@gildor why is that? what if I only want to use rx

why is that

I didn’t get your question. Retrofit supports suspend functions out of the box now, no need to have any adapters. Rx requires adapter

I think he means he shouldnt have to take the coroutines dependency if he is using rx

No, suspend function is part of Kotlin itself and stdlib, it has nothing to do with kotlinx.coroutines. And because Retrofit is written now in Kotlin you anyway have dependency on Kotlin stdlib

kotlinx.coroutines is an optional dependency of retrofit

Yes, it’s optional, to support cancellation and provide

Call.await()