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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.
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RxAndroid is an extension of RxJava for Android which is used only in Android application. RxAndroid introduced the Main Thread required for Android. To work with the multithreading in Android, we will need the Looper and Handler for Main Thread execution. RxAndroid provides AndroidSchedulers.
Actually the only advantage of LiveData over RxJava we have noticed is they automatically subscribe and unsubscribe on Activity life cycle events (or over android components implementing life cycle). So loosing all the power of RxJava for sake of getting rid off, well, dozen lines like compositeDisposable.
The Android operating system is a mobile operating system that was developed by Google (GOOGL) to be primarily used for touchscreen devices, cell phones, and tablets.
Coming to RxJava, RxJava streams are prone to leaks, where a stream continues to process items even when you no longer care. Kotlin coroutines use structured concurrency, which makes it much easier to manage the lifecycle of all your concurrent code.
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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