title: touchesBegan function never being entered
body: <p>I'm trying to pop up a popover for my app. So far, the popover pops up at a fixed coordinate, I'm trying to get it to pop at the point where the user tapped. This is what I have:</p>
  
  <pre><code>override func touchesBegan(touches: Set&lt;UITouch&gt;, withEvent event: UIEvent?) {
      print("touchesbegan")
      for touch in touches{
          //Handle touch
          let location = touch.locationInView(self.view)
          let storyboard = UIStoryboard(name: "Main", bundle: nil)
  
          let vc = storyboard.instantiateViewControllerWithIdentifier("ColonyPopoverController") as! ColonyPopoverController
          vc.modalPresentationStyle = .Popover
          vc.preferredContentSize = CGSizeMake(200, 150)
  
          if let popoverController = vc.popoverPresentationController {
              popoverController.delegate = self
              popoverController.sourceRect = CGRectMake(location.x, location.y, 20, 10)
              popoverController.sourceView = self.view
              self.presentViewController(vc, animated: true, completion: nil)
          }
      }
  }
  </code></pre>
  
  <p>I notice that the print statement never prints when I tap on the simulator.</p>
  
  <p>I have <code>interaction</code> and <code>multi-touch</code> enabled in my view. I know that that works fine because I also have it integrated with Google Maps, so that when I tap, a google pin appears:</p>
  
  <pre><code>func mapView(mapView: GMSMapView!, didTapAtCoordinate coordinate: CLLocationCoordinate2D) {
      print("You tapped at \(coordinate.latitude), \(coordinate.longitude)")
      let marker = GMSMarker()
      marker.position = CLLocationCoordinate2DMake(coordinate.latitude, coordinate.longitude)
      marker.title = "Sydney"
      marker.snippet = "Australia"
      marker.map = mapView
  </code></pre>
  
  <p>}</p>
  
  <p>and I see the print statements printing as well. Not sure what I'm missing here.</p>
  
  <p>User interaction is enabled for both the superview and the view:</p>
  
  <p><a href="https://i.stack.imgur.com/Dulwz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Dulwz.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/3kLTj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3kLTj.png" alt="enter image description here"></a></p>