RxJava - zip list of Observable

Question

I have a list of Observables (RxJava 1).

List observableList = new ArrayList<>();

It can contain at least 1 Observable.

Answer 1

ReactiveX - Zip operator

Zip beyond BiFunction

Zip combine the emissions of multiple Observables together via a specified function and emit single items for each combination based on the results of this function

Here, list is an Array List of Observables of whichever type you want to pass.

val list = arrayListOf>()


Observable.zip(list) { args -> Arrays.asList(args) }
    .subscribeOn(Schedulers.io())
    .observeOn(AndroidSchedulers.mainThread())
    .subscribe({
        val response = it[0]
        val imageUrlResponse = imageUrlObject as ImageUrlResponse
        urls.add(imageUrlResponse.imageUrl)}
               }, {
        val c = it
 })

The Result of the following subscription is this image below. Just like we expect it to be zipped together. Also can you notice it returns all the responses to be zipped in a single java.lang.Object[].

Note I had to type cast my Array List to access my single object because it is of type Any!