title: UITapGestureRecognizer is not working with Google Maps SDK
body: <p>I have a mapViewController with some custom UIView over it (just two labels with some background). I want to show new ViewController after the tap on this UIView.</p>
  
  <p>So, my code (this was a working solution for other cases) for custom UIView:</p>
  
  <pre><code> tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "checkGesture:")
          tapGestureRecognizer.numberOfTapsRequired = 1
          self.userInteractionEnabled = true
          self.addGestureRecognizer(tapGestureRecognizer)
  </code></pre>
  
  <p>and</p>
  
  <pre><code>func checkGesture(sender: UITapGestureRecognizer) {
      print("it works")
  }
  </code></pre>
  
  <p>Could anyone please tell me what is the problem here?</p>
  
  <p><strong>Edit (Solved):</strong> So, I tried to put this custom UIView on another ViewController and it works. It seems that main source of this problem is the next part of code in my MapViewController:</p>
  
  <pre><code>let mapView = GMSMapView.mapWithFrame(CGRectZero, camera:camera)
      self.view = mapView
  </code></pre>
  
  <p>Without the last line (self.view = mapView), my custom UIView works (but I don't have any map, so I had to change this code slightly).</p>
  
  <pre><code>let mapView = GMSMapView.mapWithFrame(CGRectMake(0, 0, self.view.frame.width, self.view.frame.height), camera:camera)
      self.view.addSubview(mapView)
  </code></pre>