Inheritance: Android.Views.ScaleGestureDetector.SimpleOnScaleGestureListener
 public GestureViewRenderer()
 {
     _gestureListener = new DroidGestureViewTouchListener();
     _gestureDetector = new GestureDetector(_gestureListener);
     _scaleListener   = new DroidGestureViewScaleListener();
     _scaleDetector   = new ScaleGestureDetector(Context, _scaleListener);
 }
 public GestureViewRenderer()
 {
     _gestureListener = new DroidGestureViewTouchListener();
     _gestureDetector = new GestureDetector(_gestureListener);
     _scaleListener = new DroidGestureViewScaleListener();
     _scaleDetector = new ScaleGestureDetector(Context, _scaleListener);
 }