Gesture Recognizing in iOS
1)Tapping (UITapGestureRecognizer): Tapping one or more fingers on the screen.
2)Long Pressing (UILongPressGestureRecognizer): Pressing one or more fingers to the screen for a specific period of time.
3)Pinching (UIPinchGestureRecognizer): Pinching to close or expand something.
4)Rotating (UIRotationGestureRecognizer): Sliding two fingers in a circular moton.
5)Swiping (UISwipGestureRecognizer): Swiping with one ormore fingers in a specific direction.
6)Panning (UIPanGestureRecognizer): Touching and dragging.
7) Shaking : Physically shaking the iOS device.
see also iOS Layers
