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();
Observable is the generic ReactiveX building block, of event source that emits values over time. (and thus exists in every language ReactiveX extended to) in short Observable events are: onNext* (onCompleted | onError)? /(* zero or more ? – zero or 1) Single and Completable are new types introduced exclusively at RxJava that represent reduced … Read more
The IDE does not know what potential effects your subscription can have when it’s not disposed, so it treats it as potentially unsafe. For example, your Single may contain a network call, which could cause a memory leak if your Activity is abandoned during its execution. A convenient way to manage a large amount of … Read more
Regarding the original question, both RxJava and LiveData complement each other really well. LiveData shines on ViewModel layer, with its tight integration with Android lifecycles and ViewModel. RxJava provides more capabilities in transformations (as mentioned by @Bob Dalgleish). Currently, we’re using RxJava in data source and repository layers, and it’s transformed into LiveData (using LiveDataReactiveStreams) … Read more