icanswiftabit

coordinator.session.loadObjects(ofClass: Cat.self) { cats in
  collectionView.performBatchUpdates {
    for cat in cats as! [Cat] {
      self.viewModel.cats.insert(cat, at: destinationIndexPath.row)
    }
    collectionView.reloadSections(IndexSet(integer: destinationIndexPath.section))
  }
}

icanswiftabit

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

icanswiftabit

for item in session.items {
	item.itemProvider.loadObject...
}

icanswiftabit

func dropInteraction(_ interaction: UIDropInteraction, performDrop session: UIDropSession) {
	session.loadObjects(ofClass: NSString.self) { item in
		DispatchQueue.main.async {
			label.text = item as NSString as String
		}
	}
}

icanswiftabit

func dropInteraction(_ interaction: UIDropInteraction, sessionDidUpdate session: UIDropSession) -> UIDropProposal {
	return UIDropProposal(operation: .copy)
}

icanswiftabit

func dropInteraction(_ interaction: UIDropInteraction, canHandle session: UIDropSession) -> Bool {
	return session.hasItemsConforming(toTypeIdentifiers: [kUTTypePlainText as String])
}

icanswiftabit

func dragInteraction(_ interaction: UIDragInteraction, itemsForBeginning session: UIDragSession) -> [UIDragItem] {
	let provider = NSItemProvider(object: "Hello" as NSString)
	return [UIDragItem(itemProvider: provider)]
}

icanswiftabit

collectionView.pasteConfiguration = UIPasteConfiguration(forAccepting: UIImage.self)

...

override func paste(itemProviders: [NSItemProvider]) {
    for provider in itemProviders {
        provider.loadObject(ofClass: UIImage.self, completionHandler: { item, error in
            guard error == nil else {
                return
            }

icanswiftabit

// example your_app_dir/.bundle/config
 — -
 BUNDLE_PATH: “.gems”
 BUNDLE_DISABLE_SHARED_GEMS: “true”

icanswiftabit

//example Gemfile
source ‘https://rubygems.org'
gem ‘cocoapods’
gem ‘cocoapods-keys’
gem ‘redcarpet’
gem ‘rswift-ios’