title: UITextField doesn't respond on the google map?
body: <p>I'm using google map in my iOS app. I have add GMSMapView and textfield on it but it cannot be touch.Following is my code:</p>
  
  <pre><code> //UI OutletControls
  @IBOutlet weak var tableView: UITableView!
  @IBOutlet weak var mapView: GMSMapView!
  @IBOutlet weak var txtF: UITextField!
  //UI OutletControls
  
  
  override func viewDidLoad() {
      super.viewDidLoad()
  
      //add views
      self.view.addSubview(self.mapView)
      self.mapView.addSubview(self.txtF)
  
      self.tableView.hidden = true
  
      /* Setup delegates */
      txtF.delegate = self}
  </code></pre>