UICollectionView drag and drop remove translucent cell

user_5597821 0
Viewed 1054

I'm using iOS 11 drag and drop API for reordering and want to remove translucent cell which appears on start dragging. Is it possible? For dragging I use only required method of UICollectionViewDragDelegate:

- (nonnull NSArray<UIDragItem *> *)collectionView:(nonnull UICollectionView *)collectionView
                     itemsForBeginningDragSession:(nonnull id<UIDragSession>)session
                                      atIndexPath:(nonnull NSIndexPath *)indexPath {
    NSItemProvider *itemProvider = [NSItemProvider new];
    UIDragItem *dragItem = [[UIDragItem alloc] initWithItemProvider:itemProvider];

    return @[dragItem];
}

enter image description here

uicollectionview drag-and-drop objective-c ios
2 Answers

You can customize your cell during the drag/drop lifecycle by overriding dragStateDidChange(_ dragState: UICollectionViewCell.DragState)

class MyCell: UICollectionViewCell {

    //...
    override func dragStateDidChange(_ dragState: UICollectionViewCell.DragState) {

        switch dragState {
        case .none:
            self.layer.opacity = 1
        case .lifting:
            return
        case .dragging:
            self.layer.opacity = 0

        }
    }
}
user_24911150

On your cell class override this method:

override func dragStateDidChange(_ dragState: UICollectionViewCell.DragState) {

    switch dragState {
    case .none:

        self.layer.opacity = 1

    case .lifting:

        return

    case .dragging:

        self.layer.opacity = 0
    }
}
user_5167650
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