Unable to create call adapter for io.reactivex.Observable

Question

I\'m going to send a simple get method to my server(it is Rails app) and get the result using RxJava and Retrofit. The thing that I did is:

My interface:

Answer 1

You need to tell Retrofit that you want to use RxJava 2, using:

addCallAdapterFactory(RxJava2CallAdapterFactory.create())

So, for creating your Retrofit object, you will have something like:

Retrofit retrofit = new Retrofit.Builder()
    .baseUrl(SERVICE_ENDPOINT)
    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
    .build();