ios - Dragging from a collection view works on the iPad, but not on the iPhone. How come? -


i've been implementing new drag , drop functionality in ios 11, collection view. right things work on ipad, not on iphone. i'm aware can drag , drop within same app on iphone; that's i'm trying do.

for reason collectionview(_:itemsforbeginning:at:) isn't called when attempt perform drag. works fine on ipad. thoughts?

figured out. don't understand why, on collection view had set draginteractionenabled true.

so... collectionview.draginteractionenabled = true


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