Open Radar

 
Summary:
A collection view cell cannot be **selected** if the collection view delegate indicates that the cell should not be **highlighted**. These should be independent factors, as the collection view delegate also has a method to indicate that a cell should not be highlighted.

Steps to Reproduce:
1. Create a collection view
2. Click on a cell; it is selected normally.
3. Implement the UICollectionViewDelegate method collectionView:shouldHighlightItemAtIndexPath: and return NO
4. Click on a cell; it is NOT selected.

Expected Results:
collectionView:shouldHighlightItemAtIndexPath: should not have any impact on whether the cell is selected. After all, that's what collectionView:shouldSelectItemAtIndexPath: is for.

Actual Results:
Returning NO from collectionView:shouldHighlightItemAtIndexPath: prevents the cell from being selected. setSelected: on the UICollectionViewCell object is not called.

Version:
iOS 7.1 (11D167)

Notes:
Potentially related to rdar://16645887

It's possible that this is the intended behavior, and the documentation needs to be updated.

Code sample: https://github.com/brockboland/CellSelectionPrevention