segue to another view controller - swift

Question

I've been trying to segue some labels across to another view controller but i can't seem to work it out.
my first view controller:
import UIKit
class firstViewController: UIViewController,UITextFieldDelegate {
#IBOutlet weak var label1: UILabel!
#IBOutlet weak var label2: UILabel!
#IBOutlet weak var label3: UILabel!
#IBOutlet weak var label4: UILabel!
#IBOutlet weak var label5: UILabel!
#IBOutlet weak var label6: UILabel!
var pickerLabels: [String!] {
return [label1.text,label2.text,label3.text,label4.text,label5.text,label6.text]
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let controller = segue.destinationViewController as thirdViewController
controller.vc2Labels = pickerLabels //pickerLabels shows error
}
}
the labels in here are what I'm trying to segue but "pickerLabels" keeps coming up with an error
my second view controller:
import UIKit
class secondViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
var vc2Labels: [String]!
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int{
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component:Int) -> Int{
return vc2Labels.count
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String!{
return vc2Labels[row]
}

Answer 1

I think I know your problem. You seem to be passing in an array of String into a string object.
Maybe you can alter your second view controller's variable to be:
var vc2Labels: [String]!
but I wouldn't recommend using implicit unwrapping of optional, since it allows a passing in of nil. You can declare an empty array like this.
var vc2Labels = [String]()
Hope this helps. More context would be helpful.