James Rimmer2,603 Points
"Each iPhone app has one window which acts as a container for the views in our app"
I put 'False' for this question and it said I was incorrect, but actually it is a poorly worded question. Each iPhone app doesn't necessarily have one window, as the video lesson stated that each iPhone app has AT LEAST one window (the implication being there could be multiple windows within the app). Will this question be updated?
Nathan F.iOS Development with Swift Techdegree Student 28,947 Points
This is a little tricky one--I'd have to go back to see where the video says "at least" one window to confirm, but the answer is indeed actually "true." If you open a recent iOS project, or even a new one, and use the "Debug View Hierarchy" button, You'll see that underneath your multiple views is a single object called "UIWindow".
It is possible to have more than one UIWindow, but as the docs specify, this is typically for displaying content on an external monitor or something of that sort.
The phrasing might be a bit confusing, but it's still true--there's always one
UIWindow object which manages and contains our views.