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POUINavigationControllerDelegate methods not called (demo code on github)
 

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    <p>UINavigationControllerDelegate methods not called when poping to a view controller that don't support the current orientation.</p> <p>I have a UINavigationController as root view controller of my app (initial view controller in my Storyboard).</p> <p>Let say I push a ViewController A with this for orientation:</p> <pre><code>- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); } </code></pre> <p>Hence we don't support any landscape mode. On top of that let's push another ViewController with code:</p> <pre><code>@interface B : UIViewController &lt;UINavigationControllerDelegate&gt; @end @implementation B - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; // any orientation supported } - (void)viewDidLoad { [super viewDidLoad]; AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; UINavigationController *nc = (UINavigationController*)appDelegate.window.rootViewController; nc.delegate = self; } - (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated { // not always called... } - (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated { // not always called... } @end </code></pre> <p>Now if I have my iPhone in portrait and I push view controller B on top of A, via some touch event, then touch the "back" button in the navbar, everything is fine and the delegate methods are called (I do some stuff there).</p> <p>But if, when I'm viewing view B, I rotate to landscape, and then hit the back button, those delegate methods are not called!! What's the point of setting a delegate for the UINavigationController if the methods are called sometimes but not other ? Surely I'm doing something wrong.</p> <p>I try to put the delegate in other class, like AppDelegate or my MainView, nothing change.</p> <p>Any ideas ?</p> <p><strong>demo code here:</strong> <a href="http://git://github.com/malaba/NavBarTest.git" rel="nofollow">git://github.com/malaba/NavBarTest.git</a></p> <p>From a basic Master-Detail template, modified just as above.</p> <p>How to show my point ? Here is the step-by-step:</p> <ol> <li>Add some line in Master View (the + top right)</li> <li>then touch a line to go to details view</li> <li>See Log in output showing up</li> <li>Hit back button (labeled "Master"), again log showing up.</li> </ol> <p>Now try to rotate the iPhone (or Simulator) in details view, then go "back" and see <strong>no log</strong> showing up?!</p>
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