Advantages of RxJava + RxAndroid over AsyncTask

Question:

Everywhere it is written that RxJava (+ RxAndroid) is better than AsyncTask, and what are the real advantages of RxJava (+ RxAndroid) over AsyncTask?

Answer:

RxJava – Mainly used if you have a lot of tasks, you can put them in a sequence that you know when you finish and the next one is about to start (You can conveniently manage this thread stack as needed). And AsyncTask, use if you have more than one launch, since you have no guarantee of which task will be executed first, and this can alternate with many errors. If you care about ordering, RxJava allows you to make sequential calls.

As far as memory leaks are concerned, we can have AsyncTask as an inner activity class. Now since it is activity-related, when the activity is destroyed the context is still hanging around and will not be garbage collected, this is part of the memory leak.

This is where RxJava can help. if any errors occur at all, we can call the onError subscribers and do the actions we need. So if one task comes down and Async, if a lot, then in the direction of Rx.

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