Why do we need to use RxAndroid with RxJava? What is the functional difference between them and actual use of RxAndroid and RxJava? I can't find proper answer for this.
3 Answers
RxAndroid
can be understood as an extension to RxJava
, that helps you to use it on Android platform easily. See the description on RxAndroid Github repository:
Android specific bindings for RxJava 2.
This module adds the minimum classes to RxJava that make writing reactive components in Android applications easy and hassle-free. More specifically, it provides a Scheduler that schedules on the main thread or any given Looper.
Note that when you're using RxAndroid
, you should also use the latest RxJava
version as a dependency:
Because RxAndroid releases are few and far between, it is recommended you also explicitly depend on RxJava's latest version for bug fixes and new features.

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RxAndroid does not replace rxjava. It is a small library of Android specific rxjava utilities. For example it makes the Android application main thread available as an rxjava scheduler.

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The major difference between RxAndroid and RxJava is Schedulers. Schedulers are specifically available in RxAndroid not in RxJava which helps in efficient threading.
https://www.androidhive.info/RxJava/android-getting-started-with-reactive-programming/

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