Executors reused in other class is the best practice?

Question

I am using ExecutorService executor = Executors.newFixedThreadPool(1); in Main activity for networking stuff.

My question is, for other class or activity i have to use this executor object or i have to do shutdown this Executor at end of my main activity and create new instance in other class or activity? What is the bast practice?

Answer 1

A fixed thread pool executor maintains a thread.

If you want to run code on the same thread you should use the same executor, if you want to run code on a different thread you should create a new executor.

It does not matter that much if an executor is shared between activities or not, you only need to take care of shutting it down eventually.