Open Radar

 
09-Apr-2013 06:43 PM Alan Livingston:
Summary:
 If the rootviewcontroller is a UISplitViewController, and a modal view controller is presented at app launch while in portrait, the UISplitViewController misses a round of delegate callbacks when the modal is dismissed.

Steps to Reproduce:
A UISplitViewController is the root view controller.  A separate view controller is presented modally in -[AppDelegate applicationDidBecomeActive:], with no animation. 

Launch app in portrait.  After modal view controller is presented, rotate to landscape and dismiss modal view controller.

In the attached project - 
1. launch in portrait
2. rotate to landscape
3. dismiss modal

Expected Results:
UISplitViewController delegate receives -splitViewController:willHideViewController:withBarButtonItem:forPopoverController: before the modal view controller is presented.  When the modal view controller is dismissed, after rotating to landscape, the delegate should receive -splitViewController: willShowViewController:invalidatingBarButtonItem: so the detail view can remove the invalidated bar button item.

Actual Results:
 -splitViewController:willHideViewController:withBarButtonItem:forPopoverController: before the modal view controller is presented. When the modal view controller is dismissed after rotating to landscape, the delegate does NOT receive -splitViewController: willShowViewController:invalidatingBarButtonItem:.  Rotate back to portrait and the delegate does not receive  -splitViewController:willHideViewController:withBarButtonItem:forPopoverController:.  After this, rotation events are handled correctly and the correct delegate methods are called.

Regression:
If the modal view controller is presented with animation:YES, all delegate methods are called correctly.  (but "Unbalanced calls to begin/end appearance transitions" is logged to console in this case).

Notes:

09-Apr-2013 06:43 PM Alan Livingston:
'SVCModalLogin.zip' was successfully uploaded