ShareViewController_setup.swift

import Foundation
import Social

class ShareViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        if let itemProviders = (extensionContext!.inputItems.first as? NSExtensionItem)?.attachments {
            // Your shared item
        }
    }
    
    // Dismiss ShareSheet
    func close() {
        self.extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
    }
    
}