cloud files access iOS

 
 // Showing the menu action sheet
            var documentMediaTypes: [String] = []
            documentMediaTypes.append(String(kUTTypePDF))
           documentMediaTypes.append(String(kUTTypePNG))
           documentMediaTypes.append(String(kUTTypeImage))        
           documentMediaTypes.append(String(kUTTypeVideo))
          documentMediaTypes.append(String(kUTTypeMovie))
          documentMediaTypes.append(String(kUTTypeItem))
            
            
            let viewController: UIDocumentMenuViewController = UIDocumentMenuViewController(documentTypes: documentMediaTypes, inMode: .Import)
            
            viewController.delegate = self
            viewController.modalPresentationStyle = .FormSheet
              self.presentViewController(viewController, animated: true, completion: { _ in })
              
// Menu picker Delegate

       func documentMenu(documentMenu: UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {
        documentPicker.delegate = self
        
      self.presentViewController(documentPicker, animated: true, completion: nil)
    }
// File Picked delegate 
func documentPicker(controller: UIDocumentPickerViewController, didPickDocumentAtURL url: NSURL) {
        print(url.path)
       
        let documentsUrl =  NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first!
        let docURL = documentsUrl.URLByAppendingPathComponent(url.path!.componentsSeparatedByString("/").last!)
            do {
                let docData = try NSData(contentsOfURL: url, options: NSDataReadingOptions())
               docData.writeToURL(docURL, atomically: true)
            } catch {
                print(error)
            }
    }