I am receiving 2 errors while a dismissal is happening in my app.
Warning: Attempt to dismiss from view controller <MyNavigationController> while a presentation or dismiss is in progress!
&
Unbalanced calls to begin/end appearance transitions for <MainViewController>.
I've searched around and everywhere says that there is usually a conflicting dismissal happening where a button is calling the transition both programmatically and through the storyboard. I, however, am receiving these errors when using the normal back button that comes with nav controllers. I don't do anything with the button at all.
The only thing I can link to the errors is that my nav controller is autorotating while trying to dismiss the view controller. If I remove autorotate or set the orientation of both view controllers to be the same then I don't get the error. Problem is, I need one of the view controllers to be portrait and the other to be landscape...
This is how I set the orientation
NavController.m:
- (NSUInteger)supportedInterfaceOrientations { return self.topViewController.supportedInterfaceOrientations; } - (BOOL)shouldAutorotate { return YES; } MainViewController.m:
- (NSUInteger)supportedInterfaceOrientations { return UIInterfaceOrientationMaskPortrait; } OtherViewController.m:
- (NSUInteger)supportedInterfaceOrientations { return UIInterfaceOrientationMaskLandscapeRight; } I've noticed that for some reason it doesn't autorotate when going to my "OtherViewController", but it apparently tries to autorotate while returning to the "MainViewController", thus causing the crash.
Since it may be relevant, this is how I load my OtherViewController:
[self performSegueWithIdentifier:titles[indexPath.row] sender:nil]; I have a CollectionViewController that calls a push segue I have set up in the storyboard. Titles is an NSArray of the different segue titles connected to the MainViewController.
Here is the flow of what's going on in my app:
MainViewController : LoadView MainViewController : ViewWillAppear MainViewController : ViewDidAppear //This is where I choose to load the OtherViewController OtherViewController : LoadView MainViewController : ViewWillDisappear OtherViewController : ViewWillAppear MainViewController : ViewDidDisappear OtherViewController : ViewDidAppear //This is where I select the "Back" button Warning: Attempt to dismiss from view controller NavController while a presentation or dismiss is in progress! Unbalanced calls to begin/end appearance transitions for MainViewController. MainViewController : ViewWillDisappear MainViewController : ViewDidDisappear