iOS 10错误：UICollectionView接收到具有不存在的索引路径的单元格的布局属性 [英] iOS 10 bug: UICollectionView received layout attributes for a cell with an index path that does not exist

问题描述

在iOS 10设备中运行我的应用程序我收到此错误：

Running my app in a device with iOS 10 I get this error:

UICollectionView收到的索引路径不存在的单元格的布局属性

在iOS 8和9中工作正常。我一直在研究，我发现这与集合视图布局无效有关。我试图实施该解决方案但没有成功，所以我想请求直接帮助。这是我的层次结构视图：

In iOS 8 and 9 works fine. I have been researching and I have found that is something related to invalidate the collection view layout. I tried to implement that solution with no success, so I would like to ask for direct help. This is my hierarchy view:

->Table view 
    ->Each cell of table is a custom collection view [GitHub Repo][1]
        ->Each item of collection view has another collection view

我试过的是插入

    [self.collectionView.collectionViewLayout invalidateLayout];

在

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView

两个集合视图的

。

of both collection views.

此外，我在尝试重新加载数据之前尝试使布局无效，不起作用...

Also I have tried to invalidate layout before doing a reload data, does not work...

可能有人给我一些指示吗？

Could anyone give me some directions to take?

推荐答案

当collectionView中的单元格数量发生变化时，我发生了这种情况。原来我在调用reloadData后缺少invalidateLayout。添加后，我没有遇到任何更多的崩溃。 Apple已经对iOS10中的collectionView进行了一些修改。我想这就是我们在旧版本上没有遇到同样问题的原因。

This happened to me when number of cells in collectionView changed. Turns out I was missing invalidateLayout after calling reloadData. After adding it, I haven't experienced any more crashes. Apple has made some modifications to collectionViews in iOS10. I guess that's the reason why we are not experiencing same problem on older versions.

这是我的最终代码：

[self.collectionView reloadData];
[self.collectionView.collectionViewLayout invalidateLayout];

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