How come the values are nil? - ios

Question

I am passing data from one class to another, and I am receiving nil values when I breakpoint and look at the console.
This is the class with the values, and I want to pass these values to the class viewc
func viewControllerAtIndex(index: Int) -> viewc {
if ((self.namepage.count == 0) || (index >= self.namepage.count) {
return viewcard()
}
var vc: viewc = self.storyboard?.instantiateViewControllerWithIdentifier("ItemController") as! viewc
vc.imageFile = self.pageImages[index] //not nil
vc.cTitle = self.namepage[index] //not nil
vc.nTitle = self.numberpage[index] //not nil
vc.pageIndex = index
vc.getArray()
return vc
}
This class is the class I want to pass the data to.
class viewc: UIViewController{
var pageIndex: Int!
var cTitle: String!
var imageFile: String!
var nTitle: String!
#IBOutlet weak var imagen: UIImageView!
#IBOutlet weak var name: UILabel!
#IBOutlet weak var number: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
}
func getArray() {
self.imagen.image = UIImage(named: self.imageFile)//imageFile is nil
self.name.text = self.cTitle//cTitle is nil
self.number.text = self.nTitle//nTitle is nil
}
}

Answer 1

func viewControllerAtIndex(index: Int) -> ViewC {
var vc = self.storyboard?.instantiateViewControllerWithIdentifier("ItemController") as! ViewC
vc.imageFile = self.pageImages[index]
vc.cTitle = self.namepage[index]
vc.nTitle = self.numberpage[index]
vc.pageIndex = index
vc.testProperties()
return vc
}
class ViewC: UIViewController{
var pageIndex: Int!
var cTitle: String!
var imageFile: String!
var nTitle: String!
#IBOutlet weak var imagen: UIImageView!
#IBOutlet weak var name: UILabel!
#IBOutlet weak var number: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
imagen.image = UIImage(named: imageFile)
name.text = cTitle
number.text = nTitle
}
// This will crash if one of them is nil
func testProperties() {
print("pageIndex: \(pageIndex)")
print("cTitle: \(cTitle)")
print("imageFile: \(imageFile)")
print("nTitle: \(nTitle)")
}
}
Now your ViewC will be set up properly. Notice you can only access your IBOutlet after the view has loaded. If you need to access the outlets before the view has loaded, you'll need to do something else.

Answer 2

The function should look like this.
func viewControllerAtIndex(index: Int) -> UIViewController?
{
let vc = storyboard?.instantiateViewControllerWithIdentifier (pagesArray[index]) return vc
}