Swift/iOS8: Why are Page Control indicators not showing?

Question

I am implementing a straightforward gallery view controller where the app displays a small range of full-screen images that the user can scroll through. I\'m using UIPageViewCon

Answer 1

Although the answer appears in abundance in many of these answers, I just want to make it explicitly clear that you need to set the UIPageViewController to 'Scroll' before these methods will get hit.