Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Learning RxJava

You're reading from   Learning RxJava Reactive, Concurrent, and responsive applications

Arrow left icon
Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781787120426
Length 400 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Thomas Nield Thomas Nield
Author Profile Icon Thomas Nield
Thomas Nield
Arrow right icon
View More author details
Toc

Table of Contents (14) Chapters Close

Preface 1. Thinking Reactively FREE CHAPTER 2. Observables and Subscribers 3. Basic Operators 4. Combining Observables 5. Multicasting, Replaying, and Caching 6. Concurrency and Parallelization 7. Switching, Throttling, Windowing, and Buffering 8. Flowables and Backpressure 9. Transformers and Custom Operators 10. Testing and Debugging 11. RxJava on Android 12. Using RxJava for Kotlin New Appendix

Understanding subscribeOn()

We kind of touched on using subscribeOn() already, but in this section, we will explore it in more detail and look at how it works.

The subscribeOn() operator will suggest to the source Observable upstream which Scheduler to use and how to execute operations on one of its threads. If that source is not already tied to a particular Scheduler, it will use the Scheduler you specify. It will then push emissions all the way to the final Observer using that thread (unless you add observeOn() calls, which we will cover later). You can put subscribeOn() anywhere in the Observable chain, and it will suggest to the upstream all the way to the origin Observable which thread to execute emissions with.

In the following example, it makes no difference whether you put this subscribeOn() right after Observable.just() or after one of the operators. The subscribeOn...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image