Data persistence after call to webservice iOS - ios

Question

Sorry for my English.
I have many problems in achieving data persistence after call the webservice .
Everything works correctly but I need to use that data in other methods .
As seen in the image once charge data on the screen then I want to give the user the option to use them well or load new data . But not as saving the data recovery webservice .
I was trying to use NSUserDefault but neither work .
From already thank you very much , any response is helpful .
Regards!
ViewController:
class ViewController: UIViewController {
let defaults = NSUserDefaults.standardUserDefaults()
#IBOutlet weak var myLabel2: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let newVC : SecondViewController = segue.destinationViewController as! SecondViewController
let telefono = myLabel2.text!
newVC.recibirString = telefono
}
#IBAction func mostrarAlgo(sender:AnyObject) {
//something
}
}
SecondViewController:
class SecondViewController: UIViewController {
let defaults = NSUserDefaults.standardUserDefaults()
var tel: String = ""
#IBOutlet weak var myLabel1: UITextField!
#IBOutlet weak var myLabel3: UITextField!
#IBOutlet weak var myLabel4: UITextField!
#IBOutlet weak var myLabel5: UITextField!
#IBOutlet weak var myLabel6: UITextField!
#IBOutlet weak var myLabel7: UITextField!
#IBOutlet weak var myLabel8: UITextField!
var recibirString = String()
override func viewDidLoad() {
super.viewDidLoad()
myLabel1.text = recibirString
performRequestAndUpdateUI2(myLabel1.text!)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func performRequestAndUpdateUI2(tel:String) {
WebService.llamarWebService (tel,completionHandler: { datos in
guard datos.count == 5 else {
self.myLabel8.text = ("El número ingresado no está registrado.")
return
}
guard datos[0] as! String == "OK" else {
print("not everything was OK")
return
}
dispatch_async(dispatch_get_main_queue()) {
self.myLabel3.text = datos[0] as? String
self.myLabel4.text = datos[1] as? String
self.myLabel5.text = datos[2] as? String
self.myLabel6.text = datos[3] as? String
self.myLabel7.text = datos[4] as? String
self.myLabel8.text = ("Usted está registrado.")
//need save this data
}
})
}
#IBAction func guardarDatos(sender: AnyObject) {
// do something
}
}
WebService:
class WebService{
var telefono = ""
class func llamarWebService(telefono:String, completionHandler: (datos:NSArray)->()){
let urlPath = "http://xxxxxxxxxxx.com.ar/xxxxxxxxxx/forwarder_number?phone=\(telefono)"
let url = NSURL(string: urlPath)
let session = NSURLSession.sharedSession()
var arreglo:NSArray!
let task = session.dataTaskWithURL(url!,completionHandler: {data,response,error -> Void in
if (error != nil){
print(error?.localizedDescription)
}
let nsdata: NSData = NSData(data: data!)
arreglo = self.retornarDatos(nsdata)
completionHandler(datos: arreglo)
})
task.resume()
}
class func retornarDatos(nsdata: NSData)-> Array<String>{
let datos = NSString(data:nsdata,encoding: NSUTF8StringEncoding)
let partes = datos?.componentsSeparatedByString(",")
var arreglo : [String] = []
for i in partes!{
arreglo.append(i)
}
return arreglo
}
}