CollectionSelectionTest
CollectionView with multiple selection test
This was a repo set up to support a Stack Overflow question about why in a UICollectionView with allowMultipleSelection, cells were able to be selected, but not deselected.
It turns out that in the cell's setSelected method, you must call [super setSelected:selected] to get the collection view to behave properly.
Leaving this here in case someone else needs to know that little factoid.