I'm following Apple's Core Data Tutorial for iOS and am having issues pretty early on when I have to build the application for the first time at the Build and Test step.
I'm building this with Xcode 4.2 and iOS 5.
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take a look http://stackoverflow.com/questions/7520971/applications-are-expected-to-have-a-root-view-controller-at-the-end-of-applicati – Manlio Jan 07 '12 at 19:00
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You didn't create the app window.
Add this line:
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
on the top of
application didFinishLaunchingWithOptions
Tomasz Wojtkowiak
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That was exactly the problem! I wonder why the tutorial doesn't have that line of code. – Kyle Hayes Jan 07 '12 at 19:16
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6 months later, and that tutorial is still broken. Thanks for this answer (and the question, too, obviously) – Ross M Karchner Jun 29 '12 at 00:39