title: Long press gesture recognizer issue
body: <p>In Interface Builder, I've added a press gesture recognizer to a MKMapView.  </p>
  
  <p>An event is sent after 1 second (I am using it to add a pin to the map). I have checked the "Cancel touches in view" behavior of my gesture recognizer, but my issue is that once the long press gesture is recognized, if you keep your finger on the screen and drag it on the map view, the event (for long press) will be sent continuously while dragging, as if it was actually a drag gesture recognizer, resulting in dozens of pins being added to my map...</p>
  
  <p>How can I fix this ?  </p>
  
  <p>Thank you.</p>