paul1893

func dragInteraction(_ interaction: UIDragInteraction, itemsForBeginning session: UIDragSession) -> [UIDragItem] {
  let image:UIImage = getImage()
  let provider = NSItemProvider(object: image)
  let item = UIDragItem(itemProvider: provider) // Build your drag item
  item.localObject = image
  return [item]
}

paul1893

func dragInteraction(_ interaction: UIDragInteraction, itemsForBeginning session: UIDragSession)
  let itemProvider = NSItemProvider()
  
  itemProvider.registerFileRepresentation(forTypeIdentifier: kUTTypeJPEG as String, fileOptions: [.openInPlace], visibility: .all){ completionHandler in
    //Get Url
    let url = Attachement.url(forName: self.contactCard.name)
    completionHandler(url, true, nil)
    return nil
  }
  

paul1893

func dragInteraction(_ interaction:UIDragInteraction, previewForLifting item:UIDragItem, session:UIDragSession) -> UITargetedDragPreview? {
  let imageView = UIImageView(image: UIImage(named: "MyDragImage"))
  let dragView = interaction.view!
  let dragPoint = session.location(in: dragView)
  let target = UIDragPreviewTarget(container: dragView, center: dragPoint)
  return UITargetedDragPreview(view: imageView, parameters:UIDragPreviewParameters())
}

paul1893

func tableView(_ tableView: UITableView, dragPreviewParametersForRowAt indexPath: IndexPath) -> UIDragPreviewParameters? {
  let parameters = UIDragPreviewParameters()
  parameters.visiblePath = yourCustomBezierPath
  return parameters
}

paul1893

func collectionView(_ collectionView: UICollectionView, performDropWith coordinator: UICollectionViewDropCoordinator) {
        let destinationIndexPath = coordinator.destinationIndexPath ?? IndexPath(item: 0, section: 0)
        coordinator.session.progressIndicatorStyle = .none
        
        for item in coordinator.items {
            let itemProvider = item.dragItem.itemProvider
            guard itemProvider.canLoadObject(ofClass: UIImage.self) else { continue }
            
            var placeholderContext: UICollectionViewDropPlaceholderContext? = nil
            

paul1893

func collectionView(_ collectionView: UICollectionView, dropSessionDidUpdate session: UIDropSession, withDestinationIndexPath destinationIndexPath: IndexPath?) -> UICollectionViewDropProposal {
  if session.localDragSession != nil {
    return UICollectionViewDropProposal(operation: .move, intent: .insertAtDestinationIndexPath)
  } else {
    return UICollectionViewDropProposal(operation: .copy, intent: .insertAtDestinationIndexPath)
  }
}

paul1893

func tableView(_ tableView: UITableView, itemsForAddingTo session: UIDragSession, at indexPath: IndexPath, point: CGPoint) -> [UIDragItem] {
  // Return an empty array to handle the tap normally or array to add items already got from itemsForBeginning
  let image = arrImg[indexPath.row]
  let provider = NSItemProvider(object: image as NSItemProviderWriting)
  let item = UIDragItem(itemProvider: provider)
  item.localObject = image
  return [item]
}

paul1893

func dropInteraction(_ interaction: UIDropInteraction, performDrop session: UIDropSession) {
  // 1) Première possibilité
  let progress = session.loadObjects(ofClass: UIImage.self) { imageItems in
    let images = imageItems as! [UIImage]
    self.selectedImageView.image = images.first
  }

  // 2) Seconde possibilité
  for item in session.items {
    item.itemProvider.loadObject(ofClass: UIImage.self) { (object, error) in

paul1893

func dropInteraction(_ interaction: UIDropInteraction, sessionDidUpdate session: UIDropSession) -> UIDropProposal {
  let dropLocation = session.location(in: view)
  let operation: UIDropOperation

  if selectedImageView.frame.contains(dropLocation) {
    if session.localDragSession == nil { // Drag come frome the app
      operation = .copy
    } else { // Drag come from a third app
      operation = .move
    }

paul1893

func dropInteraction(_ interaction: UIDropInteraction, canHandle session: UIDropSession) -> Bool {
  let identifiers = [kUTTypeImage as String] // Can be very specific [kUTTypeImagePNG as String] (Only PNG)
  return session.hasItemsConforming(toTypeIdentifiers: identifiers) && session.items.count == 1
}