Instance Method

collectionView(_:canPerformAction:forItemAt:withSender:)

Asks the delegate if it can perform the specified action on an item in the collection view.

Declaration

optional func collectionView(_ collectionView: UICollectionView, canPerformAction action: Selector, forItemAt indexPath: IndexPath, withSender sender: Any?) -> Bool

Parameters

collectionView

The collection view object that is making the request.

action

The selector identifying the action to be performed.

indexPath

The index path of the affected item.

sender

The object that wants to initiate the action.

Return Value

true if the command corresponding to action should appear in the editing menu or false if it should not.

Discussion

This method is invoked after the collectionView(_:shouldShowMenuForItemAt:) method. It gives you the opportunity to exclude commands from the editing menu. For example, the user might have copied some content from one item and wants to paste it into another item that cannot accept the content. In such a case, your method could return false to prevent the display of the relevant command.

If you do not implement this method, the default return value is false.

See Also

Managing Actions for Cells

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

Asks the delegate if an action menu should be displayed for the specified item.

Deprecated
func collectionView(UICollectionView, performAction: Selector, forItemAt: IndexPath, withSender: Any?)

Tells the delegate to perform the specified action on an item in the collection view.

Deprecated