Horizontal Layout - layout attributes for supplementary items changed without invalidating the layout.
christoff-1992 opened this issue · 6 comments
If headers and footers are been used the horizontal layout will crash when been set.
2018-12-14 11:33:41.254874+0000 Example-iOS[2682:570726] *** Assertion failure in -[UICollectionViewData validateLayoutInRect:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKitCore/UIKit-3698.93.8/UICollectionViewData.m:459
2018-12-14 11:33:41.256220+0000 Example-iOS[2682:570726] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'layout attributes for supplementary item at index path (<NSIndexPath: 0x281b59b00> {length = 2, path = 0 - 0}) changed from <UICollectionViewLayoutAttributes: 0x104700dd0> index path: (<NSIndexPath: 0x281b582e0> {length = 2, path = 0 - 0}); element kind: (UICollectionElementKindSectionHeader); frame = (0 0; 375 61); to <UICollectionViewLayoutAttributes: 0x104704650> index path: (<NSIndexPath: 0x281b59b00> {length = 2, path = 0 - 0}); element kind: (UICollectionElementKindSectionHeader); frame = (0 0; 1835 61); without invalidating the layout'
*** First throw call stack:
(0x1c05fbea0 0x1bf7cda40 0x1c0511c1c 0x1c0fff140 0x1ecfbb2ac 0x1ecfba814 0x1ecfbce30 0x1ecf8f594 0x1ecf8eaa8 0x1ecf8e668 0x102f03db0 0x102ee9c80 0x1edb528b4 0x1edb52ed0 0x102f03b68 0x102f0d0f4 0x102f0d044 0x102f0d154 0x1ed6ba768 0x1ece8a6ec 0x1ece8a61c 0x1ed6ba768 0x1ed1486d0 0x1ed1489f0 0x1ed1479f0 0x1ed6f418c 0x1ed6f53f0 0x1ed6d46ec 0x1ed7a057c 0x1ed7a2f74 0x1ed79ba64 0x1c058c1cc 0x1c058c14c 0x1c058ba30 0x1c05868fc 0x1c05861cc 0x1c27fd584 0x1ed6b9054 0x102ed8288 0x1c0046bb4)
libc++abi.dylib: terminating with uncaught exception of type NSException
I got this crash today. I'm gonna take a stab at solving it :)
I think I might be one to something now, will make a PR if I land on something!
It seems like prepare can be invoked multiple times which makes this kind of thing invalid:
From Googling the issue, it looks like a common issue with using headers in collection views since Apple introduced features like prefetching.
I didn't manage to solve it properly so I'll un-assign this issue from me for the time being.
Bah, this needs fixing but haven't had any time to fix this properly yet... Life keeps getting in the way.
Fixing this might as well go hand in hand with #35, at least I think so... they are kinda related in a way.