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David Mazza
1,253 PointsBlog project: Which class creates a segue object?
This was a really confusing question. It doesn't make sense semantically for UIStoryboardSegue to create an instance of itself.
To make matters more confusing, the documentation says this:
You do not create segue objects directly. Instead, the storyboard runtime creates them when it must perform a segue between two view controllers.
Because this is all Storyboard magic, it is hard to interpret how a segue object is created. The question would have been more clear if it just asked what the name of the class was for a segue.
2 Answers
james white
78,399 PointsHi Amit,
Actually you re-phrased it (adding the word "class") as:
The segue object is an instance of the ___________ class.
This was confusing to me because even though I eventually figured out you were looking for "UIStoryboardSegue" as the direct class, if you look at the hierarchy on this reference page (which talks about segue objects):
..you'll see that the root class for the UIStoryboardSegue class is NSObject (which I thought was the answer at first).
So maybe (to be more specific/targeted) it might say:
The ___________class, which instantiates segue objects, is also responsible for supporting the standard visual transitions available in UIKit.
............
I don't even know why we even need to know this though, since,
as both David (and the page I provided a link for above) have noted,
everything happens in the background (without usually any manual coding needed):
"You do not create segue objects directly.
Instead, the storyboard runtime creates them when it must perform a segue between two view controllers."
..and of course to initiate a segue programmatically you have to use the performSegueWithIdentifier:sender: method of UIViewController.
...which I don't remember even talked about in the videos.
Oh...and just to provide a link to the quiz that contains this question (which as a 4 part question quiz requires the correct answer to this fill-in-the-blank question to be able to pass the quiz): http://teamtreehouse.com/library/build-a-blog-reader-iphone-app/exploring-the-masterdetail-template/passing-data-to-the-detail-view-2
..if it had been a 5 part question quiz where you could get this question wrong and still pass I wouldn't have even bother to post about this question.
Amit Bijlani
Treehouse Guest TeacherYou are right. I've re-phrased it to: The segue object is an instance of ____________.