IGListCollectionViewDelegateLayout

Objective-C

@protocol
    IGListCollectionViewDelegateLayout <UICollectionViewDelegateFlowLayout>

Swift

protocol IGListCollectionViewDelegateLayout : UICollectionViewDelegateFlowLayout

Conform to IGListCollectionViewDelegateLayout to provide customized layout information for a collection view.


                    
                    
                    -collectionView:layout:customizedInitialLayoutAttributes:atIndexPath:

Asks the delegate to customize and return the starting layout information for an item being inserted into the collection view.

Declaration

Objective-C

- (UICollectionViewLayoutAttributes *)collectionView:
                                          (UICollectionView *)collectionView
                                              layout:(UICollectionViewLayout *)
                                                         collectionViewLayout
                   customizedInitialLayoutAttributes:
                       (UICollectionViewLayoutAttributes *)attributes
                                         atIndexPath:(NSIndexPath *)indexPath;

Swift

func collectionView(_ collectionView: UICollectionView!, layout collectionViewLayout: UICollectionViewLayout!, customizedInitialLayoutAttributes attributes: UICollectionViewLayoutAttributes!, at indexPath: IndexPath!) -> UICollectionViewLayoutAttributes!

Parameters

`collectionView`	The collection view to perform the transition on.
`collectionViewLayout`	The layout to use with the collection view.
`attributes`	The starting layout information for an item being inserted into the collection view.
`indexPath`	The index path of the item being inserted.


                    
                    
                    -collectionView:layout:customizedFinalLayoutAttributes:atIndexPath:

Asks the delegate to customize and return the final layout information for an item that is about to be removed from the collection view.

Declaration

Objective-C

- (UICollectionViewLayoutAttributes *)
                     collectionView:(UICollectionView *)collectionView
                             layout:
                                 (UICollectionViewLayout *)collectionViewLayout
    customizedFinalLayoutAttributes:
        (UICollectionViewLayoutAttributes *)attributes
                        atIndexPath:(NSIndexPath *)indexPath;

Swift

func collectionView(_ collectionView: UICollectionView!, layout collectionViewLayout: UICollectionViewLayout!, customizedFinalLayoutAttributes attributes: UICollectionViewLayoutAttributes!, at indexPath: IndexPath!) -> UICollectionViewLayoutAttributes!

Parameters

`collectionView`	The collection view to perform the transition on.
`collectionViewLayout`	The layout to use with the collection view.
`attributes`	The final layout information for an item that is about to be removed from the collection view.
`indexPath`	The index path of the item being deleted.