apple.uikit.protocol

Interface UICollectionViewDataSource

All Known Implementing Classes:

UICollectionViewController, UICollectionViewDiffableDataSource

public interface UICollectionViewDataSource

Method Summary

Modifier and Type	Method and Description
default boolean	collectionViewCanMoveItemAtIndexPath(UICollectionView collectionView, NSIndexPath indexPath)
UICollectionViewCell	collectionViewCellForItemAtIndexPath(UICollectionView collectionView, NSIndexPath indexPath) The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
default NSIndexPath	collectionViewIndexPathForIndexTitleAtIndex(UICollectionView collectionView, java.lang.String title, long index) Returns the index path that corresponds to the given title / index.
default void	collectionViewMoveItemAtIndexPathToIndexPath(UICollectionView collectionView, NSIndexPath sourceIndexPath, NSIndexPath destinationIndexPath)
long	collectionViewNumberOfItemsInSection(UICollectionView collectionView, long section)
default UICollectionReusableView	collectionViewViewForSupplementaryElementOfKindAtIndexPath(UICollectionView collectionView, java.lang.String kind, NSIndexPath indexPath) The view that is returned must be retrieved from a call to -dequeueReusableSupplementaryViewOfKind:withReuseIdentifier:forIndexPath:
default NSArray<java.lang.String>	indexTitlesForCollectionView(UICollectionView collectionView) Returns a list of index titles to display in the index view (e.g.
default long	numberOfSectionsInCollectionView(UICollectionView collectionView)

Method Detail

collectionViewCanMoveItemAtIndexPath

default boolean collectionViewCanMoveItemAtIndexPath(UICollectionView collectionView,
                                                     NSIndexPath indexPath)

collectionViewCellForItemAtIndexPath

UICollectionViewCell collectionViewCellForItemAtIndexPath(UICollectionView collectionView,
                                                          NSIndexPath indexPath)

The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:

collectionViewMoveItemAtIndexPathToIndexPath

default void collectionViewMoveItemAtIndexPathToIndexPath(UICollectionView collectionView,
                                                          NSIndexPath sourceIndexPath,
                                                          NSIndexPath destinationIndexPath)

collectionViewNumberOfItemsInSection

long collectionViewNumberOfItemsInSection(UICollectionView collectionView,
                                          long section)

collectionViewViewForSupplementaryElementOfKindAtIndexPath

default UICollectionReusableView collectionViewViewForSupplementaryElementOfKindAtIndexPath(UICollectionView collectionView,
                                                                                            java.lang.String kind,
                                                                                            NSIndexPath indexPath)

The view that is returned must be retrieved from a call to -dequeueReusableSupplementaryViewOfKind:withReuseIdentifier:forIndexPath:

numberOfSectionsInCollectionView

default long numberOfSectionsInCollectionView(UICollectionView collectionView)

collectionViewIndexPathForIndexTitleAtIndex

default NSIndexPath collectionViewIndexPathForIndexTitleAtIndex(UICollectionView collectionView,
                                                                java.lang.String title,
                                                                long index)

Returns the index path that corresponds to the given title / index. (e.g. "B",1) Return an index path with a single index to indicate an entire section, instead of a specific item.

indexTitlesForCollectionView

default NSArray<java.lang.String> indexTitlesForCollectionView(UICollectionView collectionView)

Returns a list of index titles to display in the index view (e.g. ["A", "B", "C" ... "Z", "#"])