Instance Method

collectionView(_:didDeselectItemAt:)

Tells the delegate that the item at the specified path was deselected.

Declaration

optional func collectionView(_ collectionView: UICollectionView, didDeselectItemAt indexPath: IndexPath)

Parameters

collectionView

The collection view object that is notifying you of the selection change.

indexPath

The index path of the cell that was deselected.

Discussion

The collection view calls this method when the user successfully deselects an item in the collection view. It does not call this method when you programmatically deselect items.

See Also

Managing the Selected Cells

Changing the Appearance of Selected and Highlighted Cells

Provide visual feedback to the user about the state of a cell and the transition between states.

Selecting Multiple Items with a Two-Finger Pan Gesture

Accelerate user selection of multiple items using the multiselect gesture on table and collection views.

func collectionView(UICollectionView, shouldSelectItemAt: IndexPath) -> Bool

Asks the delegate if the specified item should be selected.

func collectionView(UICollectionView, didSelectItemAt: IndexPath)

Tells the delegate that the item at the specified index path was selected.

func collectionView(UICollectionView, shouldDeselectItemAt: IndexPath) -> Bool

Asks the delegate if the specified item should be deselected.

func collectionView(UICollectionView, shouldBeginMultipleSelectionInteractionAt: IndexPath) -> Bool

Asks the delegate whether the user can select multiple items using a two-finger pan gesture in a collection view.

func collectionView(UICollectionView, didBeginMultipleSelectionInteractionAt: IndexPath)

Tells the delegate when the user starts using a two-finger pan gesture to select multiple items in a collection view.

func collectionViewDidEndMultipleSelectionInteraction(UICollectionView)

Tells the delegate when the user stops using a two-finger pan gesture to select multiple items in a collection view.