清除cell 报错 'UICollectionView received layout attributes for a cell with an index path that does not exist:

[SpectatorNan]

我在清除cellectionview 的时候 cell数量为0刷新 会报以下错误：
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UICollectionView received layout attributes for a cell with an index path that does not exist: <NSIndexPath: 0xc000000000000016> {length = 2, path = 0 - 0}'
*** First throw call stack:

[wjywjwww]

我在这个Demo里面的viewDidLoad 里面加了一句延迟调用
perform(#selector(ViewController.some), with: nil, afterDelay: 2)
func some(){
dataArray.removeAll()
self.collectionView.reloadData()
}
然后2秒之后Collectionview所有的Cell会正常消失，没有发生Crash。
不过网上百度了一下这个问题
https://stackoverflow.com/questions/18339030/uicollectionview-assertion-error-on-stale-data
这个网址里面的解决方案你可以看一下。