StackOverflow2013

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POInterfaceBuilder - UIViewController subclass not recognized as subclass
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copied!<p>I'm working on a simple iPhone app.</p> <p>I have 1 UINavigationController and 2 subclasses of UIViewController.</p> <p>I have a MainWindow.xib file, a PersonListView.xib, and a PersonDetailView.xib.</p> <p>The MainWindow.xib has the UINavigationController with the view linked over to the PersonListView.xib file.</p> <p>The PersonListView.xib has the File's Owner listed as a PersonListViewController class.</p> <p>I have some buttons on the PersonListView, along with labels and images. All displays correctly.</p> <p>When I try to link a button on the PersonListView to my PersonListViewController class, the button is not firing....</p> <p>The result: <strong>* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*</strong> -[UIViewController viewDetail]: unrecognized selector sent to instance 0x450d50'</p> <p>If I go into the debug console and print-object 0x450d50, I get:</p> <p>(gdb) print-object 0x450d50 (gdb) </p> <p>The Interface Builder correctly shows the File's Owner as a PersonListViewController, so why would my button action (linked to the File's Owner) go to the superclass somehow?</p> <p>EDIT1: Ok, what seems to be happening is that I wasn't getting an instance of the subclass unless, in my MainWindow.xib, I explicitly set the class of the view controller to my subclass.</p> <p>There's still got to be something I'm missing, though, because surely I should be able to start up arbitrary subclasses of UIViewController just by swapping out the NIB file name from the main window?</p> <p>EDIT2: (Response to Kevin) That's not what I'm saying regarding the contents of a XIB. </p> <p>I have 3 XIBs:</p> <p>MainWindow PeopleListView PeopleDetailView</p> <p>The PeopleListView and PeopleDetailView each have an associated File's Owner that is a corresponding UIViewController subclass. Obviously, I need my events to go to the right controller classes as I move from page to page...but if I can only use a default UIViewController or one subclass, that will be much more difficult?</p> <p>I can get the correct effect in code by manually setting up the UINavigationController with the correct root, but I feel like there should be a better way through InterfaceBuilder.</p> <p>EDIT3: (to Kendall) I'm not using a tab bar. The model is the same, though, that the view in my navigation controller has to be wired to a single subclass, which seems a bit icky.</p> <p>EDIT4: (to lostintransit) The PersonListViewController has the appropriate - (IBAction) viewDetail; method. The problem is that I can't find a way, in my MainWindow.xib, to flag the view inside my UINavigationController as "initially load this from PersonListView.xib, with a PersonListViewController as the view" that wouldn't make it difficult to replace the PersonListView with a PersonDetailView.</p>

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