iOS7 的 UICollectionViewLayoutAttributes 中的 UICollectionView 异常 [英] UICollectionView exception in UICollectionViewLayoutAttributes from iOS7

问题描述

我在 CollectionView 中使用 CustomLayout 完成了一个视图.在 iOS6 中它运行良好，但在 iOS7 中它会抛出这样的异常.

I have done a View in CollectionView with CustomLayout. In iOS6 it worked great but iOS7 it throws an exception like this.

由于未捕获的异常NSInternalInconsistencyException"而终止应用程序，原因:

Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason:

'索引路径 ({length = 2, path = 0 - 0}) 处的补充项目的布局属性从 CustomSupplementaryAttributes: 0xd1123a0 索引路径: (NSIndexPath: 0xd112580 {length = 2, path = 0 - 0}) 更改；元素种类:(标识符)；帧 = (0 0; 1135.66 45);zIndex = -1;to CustomSupplementaryAttributes: 0xd583c80 index path: (NSIndexPath: 0xd583c70 {length = 2, path = 0 - 0});元素种类:(标识符)；帧 = (0 0; 1135.66 45);zIndex = -1;不使布局无效'

'layout attributes for supplementary item at index path ( {length = 2, path = 0 - 0}) changed from CustomSupplementaryAttributes: 0xd1123a0 index path: (NSIndexPath: 0xd112580 {length = 2, path = 0 - 0}); element kind: (identifier); frame = (0 0; 1135.66 45); zIndex = -1; to CustomSupplementaryAttributes: 0xd583c80 index path: (NSIndexPath: 0xd583c70 {length = 2, path = 0 - 0}); element kind: (identifier); frame = (0 0; 1135.66 45); zIndex = -1; without invalidating the layout'

推荐答案

更新前需要使现有布局失效，见报错文末:

You need to invalidate the existing layout before updating, see the end of the error message:

不使布局无效'

[collectionViewLayout invalidateLayout];

UICollectionViewLayout 的 Apple 文档

这篇关于iOS7 的 UICollectionViewLayoutAttributes 中的 UICollectionView 异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！