Exit views when switching tabs

Question

The Problem

I am trying to use CoreData in my iOS app for persistence. Everything seems to be working well, except for one thing. In some rare cases, I have two view controllers open at the same time that are both accessing the managed object context. The reason for this is that they are both child views of a tab bar controller (and the tab bar controller does not fully exit views when you switch tabs).

What I'm Looking for

I am looking for a way to make the view exit when I switch to a different tab.

Answer 1

This should be a comment but I've not enough reputation.

If you have to-many relationships it could be an approach to use .returnsObjectsAsFaults = false on your fetchrequests.

If your views are doing work while not visible it might be an approach to let your views stop any work by instrumenting viewWillDisappear . This is just to reduce the energy consumption of your app. IMHO that has nothing to do with your issue accessing faults.