Passing data between two view controllers are not working

Question

I am trying to pass some data between two view controllers, but it doesn't work..

This is the data i am trying to pass(these has items from parse.com - the same code is in both view controllers):

var userFile = [PFFile]()
var createdAt = [NSDate]()
var objID = [String]()

This is the button for open the view controller(inside the first view controller i am trying to send data FROM):

@IBAction func openButtonAction(sender: AnyObject) {
        let modalVC = ModalViewController(nibName: "ModalViewController", bundle: nil)
        modalVC.userFile = self.userFile
        modalVC.createdAt = self.createdAt
        modalVC.objID = self.objID

        print("USERFILE: \(modalVC.userFile.count)")
        presentViewController(modalVC, animated: true, completion: nil)
    }

The view controller is a ModalViewController.xib connected to ViewStoryModalViewController.swift

This is the viewDidLoad in the view controller i am trying to send data TO:

override func viewDidLoad() {
        super.viewDidLoad()

        print("USERFILECOUNT: \(self.userFile.count)")
    }

My problem is that this is the messages i get in xCode output:

What might be wrong here? Any suggestions?

Answer 1

xCode output tells that an array self.userFile contains zero elements, It doesn't mean that it is passed wrong. It is just empty.

print("USERFILECOUNT: \(self.userFile.count)")

Check if it is empty before passing it to modal vc.

Answer 2

Try this code You first need to present after that try to set variable.

IBAction func openButtonAction(sender: AnyObject) {
        let modalVC = ModalViewController(nibName: "ModalViewController", bundle: nil)
      print("USERFILE: \(modalVC.userFile.count)")
        presentViewController(modalVC, animated: true, completion: nil)
        modalVC.userFile = self.userFile
        modalVC.createdAt = self.createdAt
        modalVC.objID = self.objID
    }