title: Search Bar disappears after tap on it
body: <p>Am trying to implement search nearby places using google maps. The below is the code what I have done so far</p>
  
  <pre><code> override func viewDidLoad() {
      super.viewDidLoad()
  //Adding Mapview
      mapView  = GMSMapView(frame: CGRectMake(0, 120, self.view.bounds.width, self.view.bounds.height - 120))
  
      self.view.addSubview(mapView)
      mapView.mapType = kGMSTypeNormal
  
      locationManager.delegate = self
      locationManager.requestWhenInUseAuthorization()
  
      let resultTableView = UITableView(frame: CGRectMake(10, 100, 300, 60))
      self.searchResultController = UITableViewController()
      self.searchResultController?.tableView = resultTableView
      self.searchResultController?.tableView.dataSource = self
      self.searchResultController?.tableView.delegate = self
  
        self.searchResultController?.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
      self.searchController = UISearchController(searchResultsController: self.searchResultController)
      self.searchController?.searchResultsUpdater = self
      self.searchController?.hidesNavigationBarDuringPresentation = true
      self.searchController?.dimsBackgroundDuringPresentation = false
      self.searchController?.delegate = self
      self.searchController?.searchBar.frame = CGRectMake(0,70,self.view.bounds.width,40)
      self.searchController?.searchBar.placeholder = "Please choose a location"
      self.view.addSubview(self.searchController!.searchBar)
      self.definesPresentationContext = true
  }
  </code></pre>
  
  <p>Everything works fine, except searcg bar disappears after a single tap. But it does its function.<img src="https://i.stack.imgur.com/Ntm1I.png" alt="enter image description here"></p>