在iOS 6和iOS 7上重新加载UICollectionView

Question

I am working app which uses UICollectionView. This app runs very well on iOS 6 but fails to run it on iOS7. I debug a lot and come to conclusion that reload method of UICollectionView doesn't work on iOS 7.

Is there any reason behind this?

here are the steps of my app functionality where I found issue.

1. MyCollectionViewCell frame get changed (This is subclass of UICollectionViewCell)

2. Reload collection view.

3. iOS 6 works well (Here invalidate layout gets called internally then "cellAtRowOfindexpath:" ie collection view data source methods gets call)) /

   iOS 7 doesn't work reload method (Here only invalidate layout gets called but not "cellAtRowOfindexpath:" ie collection view data source method).

Thanks in advance...

Answer 1

the number of cells/sections in the datasource never changed, So you have to reload the visible content on the screen By calling below function of collection view

[_collectionView reloadItemsAtIndexPaths:[_collectionView indexPathsForVisibleItems]];

put above line just after

[_collectionView reloadData]

Hope your problem will be solved.