I have done a View in CollectionView with CustomLayout. In iOS6 it worked great but iOS7 it throws an exception like this.
Terminating app due to uncaught exception
I solved my problem by override the method at the subclase of UICollectionViewFlowLayout:
UICollectionViewFlowLayout
- (BOOL)shouldInvalidateLayoutForBoundsChange:(CGRect)newBound
return YES