How does RxJava work on Android?

Related questions

1. Why RxJava is used in Android?
2. What is a ViewModel in Android?
3. What are fragments in Android?
4. What does a ViewModel do?
5. What is activity life cycle in Android?
6. What is difference between RxJava and RxAndroid?
7. What is Framelayout Android?
8. What is a MVVM framework?
9. What is difference between activity and fragment?
10. What is the difference between MVVM and MVP?

Tags

1. #emitting
2. #using
3. #subscriber
4. #observables
5. #event
6. #reactivex
7. #observable
8. #consuming
9. #items
10. #subscribers
11. #blocks
12. #rxjava
13. #composing
14. #based
15. #implementation
16. #programs
17. #library
18. #those
19. #asynchronous
20. #sequences
21. #building