問題：
I've been updating my apps to run on iOS 7 which is going smoothly for the most part.我一直在更新我的應用程序以在 iOS 7 上運行，這在大多數情況下進展順利。 I have noticed in more than one app that the reloadData method of a UICollectionViewController isn't acting quite how it used to.我在不止一個應用程序中注意到UICollectionViewController的reloadData方法UICollectionViewController那樣起作用。
I'll load the UICollectionViewController , populate the UICollectionView with some data as normal.我將加載UICollectionViewController ，像UICollectionView用一些數據填充UICollectionView 。 This works great on the first time.這在第一次很有效。 However if I request new data (populate the UICollectionViewDataSource ), and then call reloadData , it will query the data source for numberOfItemsInSection and numberOfSectionsInCollectionView , but it doesn't seem to call cellForItemAtIndexPath the proper number of times.但是，如果我請求新數據（填充UICollectionViewDataSource ），然後調用reloadData ，它將查詢numberOfItemsInSection和numberOfSectionsInCollectionView的數據源，但它似乎沒有調用cellForItemAtIndexPath正確的次數。
If I change the code to only reload one section, then it will function properly.如果我將代碼更改爲僅重新加載一個部分，那麼它將正常運行。 This is no problem for me to change these, but I don't think I should have to.改變這些對我來說沒有問題，但我認爲我不應該這樣做。 reloadData should reload all visible cells according to the documentation. reloadData應根據文檔重新加載所有可見單元格。
Has anyone else seen this?有沒有其他人看到這個？