Question 1

How to implement debounced search in Android with RxJava?

Accepted Answer

Use Subjects with the debounce or throttleWithTimeout operator to swallow rapid input events and emit only after a pause. The example demonstrates this with text listeners for instant search functionality, similar to real-world autocomplete features.

Question 2

What's the difference between retryWhen and repeatWhen in RxJava?

Accepted Answer

retryWhen re-subscribes on errors, while repeatWhen re-subscribes on completion. The project includes examples of both, such as in exponential backoff strategies, with references to detailed blog posts explaining the nuances.

Question 3

RxJava vs Kotlin Coroutines for Android: which is better?

Accepted Answer

RxJava offers a rich set of operators for complex stream manipulations, while Kotlin Coroutines are more integrated with Kotlin and simpler for straightforward async tasks. This project is best if you're committed to RxJava, but consider Coroutines for newer codebases.

Question 4

How to cache network responses using RxJava in Android?

Accepted Answer

Use operators like concat, concatEager, or publish with merge to retrieve data from cache first, then network. The pseudo-caching example shows multiple techniques, with publish selector being recommended for production to avoid stale data overwrites.

Question 5

Can RxJava be used with Android ViewModel and LiveData?

Accepted Answer

Yes, but integration isn't covered in these examples. You can convert Observables to LiveData using libraries like LiveDataReactiveStreams, but the project focuses on direct RxJava usage without Android architecture components.

Question 6

How to handle activity rotation without losing RxJava subscriptions?

Accepted Answer

Use retained Fragments with Subjects to persist data across configuration changes. The project provides an example demonstrating how to resume observables after rotation, though it notes quirks with hot observables and multicasting.

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