Open Radar

 
Area:
UIKit

Summary:
When presenting UIDocumentMenuViewController console logs undefined layout issue - see log:

2016-08-01 17:42:33.331 bug[63679:1502146] the behavior of the UICollectionViewFlowLayout is not defined because:
2016-08-01 17:42:33.332 bug[63679:1502146] the item width must be less than the width of the UICollectionView minus the section insets left and right values, minus the content insets left and right values.
2016-08-01 17:42:33.332 bug[63679:1502146] The relevant UICollectionViewFlowLayout instance is <_UIAlertControllerCollectionViewFlowLayout: 0x7ffefaf830a0>, and it is attached to <UICollectionView: 0x7ffefc03f400; frame = (0 44; 10 0); clipsToBounds = YES; gestureRecognizers = <NSArray: 0x7ffefaf83c10>; animations = { bounds.origin=<CASpringAnimation: 0x7ffefaf8e1f0>; bounds.size=<CASpringAnimation: 0x7ffefaf8e2e0>; position=<CASpringAnimation: 0x7ffefaf8e460>; }; layer = <CALayer: 0x7ffefaf83360>; contentOffset: {0, 0}; contentSize: {0, 0}> collection view layout: <_UIAlertControllerCollectionViewFlowLayout: 0x7ffefaf830a0>.
2016-08-01 17:42:33.332 bug[63679:1502146] Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.

Steps to Reproduce:
1) Open attached project
2) Add iCloud Documents entitlement to app target
3) Run project and click [Add image button]


Expected Results:
No layout issues, no menu flickering during controller presentation

Actual Results:
Slight delay during menu items presentation, layout issues reported in console

Version:
iOS 9.3.3, iOS 9.3.1

Notes:
See also:
rdar://19385063
rdar://27471372


Configuration:
iPhone SE, iPad Air (1st gen)

Attachments:
'bug-UIDocumentMenuViewController-layout.zip' was successfully uploaded.