Saving input from alert message-swift - ios

Question

I have an issue that prevents me from display the input from the alert message into the table view. There are no errors but I don't know what's the real problem that makes the table empty.
import UIKit
import Parse
class ViewController: UIViewController ,UITableViewDelegate,UITableViewDataSource{
#IBOutlet weak var childTbl: UITableView!
var names=[String] ()
override func viewDidLoad() {
super.viewDidLoad()
self.childTbl.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
}
#IBAction func Addchild(sender: AnyObject) {
var alert=UIAlertController(title: "",
message: "إضافة طفل جديد",
preferredStyle: .Alert)
alert.addTextFieldWithConfigurationHandler({(textField) -> Void in
textField.text=""
})
alert.addAction((UIAlertAction(title: "حفظ", style: .Default, handler: { (ACTION) -> Void in
self.dismissViewControllerAnimated(true, completion: nil)
if let textField = alert.textFields!.first as?UITextField{
self.names.append(textField.text)
println(self.names)
}
})))
alert.addAction((UIAlertAction(title: "إلغاء", style: .Default, handler: { (ACTION) -> Void in
self.dismissViewControllerAnimated(true, completion: nil)
})))
//to display the alert
presentViewController(alert,
animated: true,
completion: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//UITabledatasource
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
return self.names.count;
}
//function to creat a cell
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{
var cell:UITableViewCell = self.childTbl.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell
cell.textLabel?.text = self.names[indexPath.row]
return cell
}
}