After completing the tutorial I realized that the current theme wasn’t persisting as it should after closing the app and even when opening up the settings view controller. I made the following changes, in a Swift 3 version of the app that I made, to fix the issue incase anyone finds this comment in the future:
can object-C be available?
I wrote one according to the lesson, the mainColor work fine ,but the naviBackImg or tabBackImg changed only when it’s restart the project.
This tutorial is more than six months old so questions are no longer supported at the moment for it. We will update it as soon as possible. Thank you! :]