collectionView(_:canPerformPrimaryActionForItemAt:)
Asks the delegate whether to perform a primary action for the cell at the specified index path.
Declaration
optional func collectionView(_ collectionView: UICollectionView, canPerformPrimaryActionForItemAt indexPath: IndexPath) -> BoolParameters
- collectionView:
The collection view object asking whether to perform a primary action.
- indexPath:
The index path of the cell.
Return Value
true if the primary action can be performed; otherwise, false. If you don’t implement this method, the default return value is true when the collection view isn’t in an editing state, and false when it is.
Discussion
Primary actions allow you to distinguish between a distinct user action and a change in selection (like a focus change or other indirect selection change). A primary action occurs when a person selects a single cell without extending an existing selection.
UIKit calls this method before collectionView(_:performPrimaryActionForItemAt:).