import UIKit

import MobileCoreServices

extension ViewController: UIDocumentMenuDelegate {
func documentMenu(documentMenu: UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {

    let documentPicker = UIDocumentPickerViewController(documentTypes: [kUTTypeText as String, kUTTypePDF as String], inMode: .Import)

    documentPicker.delegate = self

    self.presentViewController(documentPicker, animated: true, completion: nil)

}
}

extension ViewController: UIDocumentPickerDelegate {

func documentPicker(controller: UIDocumentPickerViewController, didPickDocumentAtURL url: NSURL) {

    // do stuffs here
}

}


class ViewController: UIViewController  {

override func viewDidLoad() {
    super.viewDidLoad()

    let importMenu = UIDocumentMenuViewController(documentTypes: [kUTTypeText as String, kUTTypePDF as String], inMode: .Import)

    importMenu.delegate = self

    self.presentViewController(importMenu, animated: true, completion: nil)

}
}