Replace callbacks with observables from RxJava

Question

Im using listeners as callbacks to observe asynchronous operations with Android, but I think that could be great replacing this listeners with RxJava, Im new using this libr

Answer 1

You are looking for Completable.create:

Completable: Represents a deferred computation without any value but only indication for completion or exception. The class follows a similar event pattern as Reactive-Streams: onSubscribe (onError|onComplete)?

Completable.create(subscriber -> {
    object.getData(new OnResponseListener() {
        @Override
        public void onSuccess() {
           subscriber.onCompleted();
        }

        @Override
        public void onError() {
           subscriber.onError(* put appropriate Throwable here *);
        }
    }
})
...//apply Schedulers
.subscribe((() -> *success*), (throwable -> *error*));