StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POLayout to Layout Navigation Transitions going back to the wrong layout
primarykey
Id
20261725
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2013-11-28T09:05:37.797
FavoriteCount
1
LastActivityDate
2013-11-28T10:27:11.007
LastEditDate
2013-11-28T10:27:11.007
LastEditorUserId
233602
OwnerUserId
233602
ParentId
0
PostTypeId
1
Score
2
ViewCount
223
LastEditorDisplayName
text
Body
I have two <code>UICollectionViewControllers</code> - lets call them master and slave. The master view controller is configured with layout A and the slave with layout B. I set <code>useLayoutToLayoutNavigationTransitions</code> on master to YES and push the slave onto the navigation stack. The layout changes from A to B and I can navigate < back and see layout A. All is good. However, in response to the user typing some text into a search box in the master view controller, I need to change the layout of the master collection view controller to layout C. This works as expected, but when I push the slave collection view controller onto the stack (configured with layout B) and navigate < back, I end up back at the master collection view controller with layout A, not layout C, as expected. So far, I've tried: <ul> <li>putting a symbolic breakpoint on <code>-[UICollectionView setCollectionViewLayout:]</code> (and it's related/sibling methods) to check whether something was messing with the collection view layout before pushing the slave onto the stack. I see the break point getting hit when I expect the layout to change, but nothing unusual in the process of popping the slave collection view controller off the navigation stack.</li> <li>stopping in the debugger and verifying the type of the collection view's <code>collectionViewLayout</code> property and I can see it is set to an instance of layout C before pushing the slave collection view onto the stack. After navigating backwards, I can see the layout has returned to the type of layout A and not layout C (as expected), which tallies with what I'm seeing visually.</li> <li>implementing <code>-navigationController:willShowViewController:animated:</code> delegate callback and setting the collection view layout to what's required. However this appears to get over-written.</li> <li>implementing <code>-navigationController:didShowViewController:animated:</code> and setting the collection view layout, but this results in an infinite loop and errors logged to the console.</li> </ul> Does anyone have any ideas what's going on here and how to solve this? I'm wondering if it's a straight-up UIKit bug, and if so, if there are any potential workarounds.
Tags
<ios7><uikit><uicollectionview><uicollectionviewlayout>
Title
Layout to Layout Navigation Transitions going back to the wrong layout
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USAndrew Ebling
UserOwnerUserId
1. USAndrew Ebling
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.