Protocol

UICollectionViewDragDelegate

The interface for initiating drags from a collection view.

Declaration

protocol UICollectionViewDragDelegate

Overview

Implement this protocol in the object that you use to initiate drags from your collection view. The only required method of this protocol is the collectionView(_:itemsForBeginning:at:) method, but you can implement other methods as needed to customize the drag behavior of your collection view.

Assign your custom delegate object to the dragDelegate property of your collection view.

Relationships

Inherits From

See Also

Drag and Drop

Supporting Drag and Drop in Collection Views

Initiate drags and handle drops from a collection view.

protocol UICollectionViewDropDelegate

The interface for handling drops in a collection view.

protocol UICollectionViewDropCoordinator

An interface for coordinating your custom drop-related actions with the collection view.

class UICollectionViewDropProposal

Your proposed solution for handling a drop in a collection view.

protocol UICollectionViewDropItem

The data associated with an item being dropped into the collection view.

protocol UICollectionViewDropPlaceholderContext

An object that contains information about a placeholder in the collection view.

protocol UIDataSourceTranslating

An advanced interface for managing a data source object.