Maintaining Progress Bar Visibility with Orientation Change

Question

I have a progress bar (swirly waiting style) defined in xml as:

Answer 1

Using android:configChanges is bad practice, because it might get you in much worse trouble.

Also saving a variable at onSaveInstanceState didn't work for me, since you won't get updates while the Activity is destroyed.

I ended up using a ResultReceiver inside a Fragment that doesn't get destroyed by using setRetainInstance(true).

A good article concerning this problem can be found here: https://www.androiddesignpatterns.com/2013/04/retaining-objects-across-config-changes.html

Also see my answer here: https://stackoverflow.com/a/54334864/6747171