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Questions tagged [rx-java2]

anything related to RxJava2 – The new implementation of the RxJava Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

RxJava2 is the new implementation of the RxJava Reactive Extensions for the JVM – RxJava2 is a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

It extends the observer pattern to support sequences of data/events and adds operators that allow you to compose sequences together declaratively while abstracting away concerns about things like low-level threading, synchronization, thread-safety and concurrent data structures.

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RxJava Single.just() vs Single.fromCallable()?

I wondered if someone can shed some light on this question, when to use Single.fromCallable( ()-> myObject ) instead of Single.just(myObject) from the documentation, Single.fromCallable(): /** * Returns a {@link Single} that invokes passed…
bastami82
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Do I have to unsubscribe from completed observable?

If an observable completes, do I still have to unsubscribe / dispose (in RxJava2) the observable to remove the Observer (prevent memory leaks) or is this handled internally by RxJava once a onComplete or onError event occurs? what about other types…
sockeqwe
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How to reset a BehaviorSubject

I have a BehaviorSubject that I would like to reset - by that I mean I want the latest value to not be available, just as if it was just created. I don't seem to see an API to do this but I suppose there is another way to achieve the same result? My…
BoD
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RxJava flatMapIterable with a Single

I'm trying to tidy up my code a little, and Single is looking like a good choice for me as I'm doing something that will only ever emit one result. I'm having an issue though as I was using flatMapIterable previously to take my response (a list) and…
spO_oks
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Is there something like Single.empty()

I'm in the process of migrating from Rx 1 to Rx 2 and suddenly while reading through posts I found out that Single should be the type of observable to use for retrofit calls. So I've decided to give it a shot and while migrating our retrofit calls…
Fred
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How to convert rxJava2's Observable to Completable?

I have Observable stream, and I want to convert it to Completable, how I could do that?
Stepango
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Difference between doAfterTerminate and doFinally

Does anybody knows what is the difference between operators "doAfterTerminate" and "doFinally" in RxJava 2 ?
Andrii Turkovskyi
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Cannot resolve symbol AndroidSchedulers

I'm using version 2.0.0 of RxJava, and it seems like I have no access to AndroidSchedulers. I'm unable to get access to mainthread through RxJava
syfy
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RxJava `Completable.andThen` is not executing serially?

I have a usecase where I initiallize some global variables in a Completable , and in the next step in the chain (using andThen operator) I make use of those variables. Following sample explains my usecase in detail Say you have a class User …
doe
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Which rxjava3 retrofit-adapter should we use for Rxjava3

I am using RxJava3 and retrofit but I am unable to get a rxjava3 retrofit-adapter for RxJava3.
Chetan Gaikwad
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Best practice for disposing Completable, Single, Maybe and terminating Observables in RxJava

I'm asking this from an Android perspective, but this should apply to RxJava in general. As a best practice, should my view always dispose of even short lived Completable, Single, Maybe and terminating Observable Rx types that should terminate in…
HolySamosa
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How to convert a List to PagedList and vice-versa?
PagedList is used for Android's cool paging library. To make the question as minimal as possible : If i have a list of strings like List stringList; // it consists of 200 strings I want to convert stringList to type…
Santanu Sur
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RxJavaPlugins Error Didn't find class "com.google.devtools.build.android.desugar.runtime.ThrowableExtension"

After upgrading Android Studio 3.0 Beta 1 getting the following error. When I downgraded the error disappeared. Studio Build: Android Studio 3.0 Beta 1 Version of Gradle Plugin: 'com.android.tools.build:gradle:3.0.0-beta1' Version of…
Bulu
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Method getMainLooper in android.os.Looper not mocked still occuring even after adding RxImmediateSchedulerRule

TrendingViewModelTest @RunWith(JUnit4::class) class TrendingViewModelTest { private lateinit var trendingRepository: TrendingRepository private lateinit var trendingViewModel: TrendingViewModel @get:Rule val schedulers =…
Manoj Perumarath
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Convert RxJava Observables To Live Data With Kotlin Extension Functions

I've been using alot of RxJava Observables converted to LiveData in my code using LiveDataReactiveStreams.fromPublisher() library. So I though of adding an extension function to the RxJava Observable to easily convert them to LiveData. These are my…
Archie G. Quiñones
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