iOS之手势操作

  手势学习： https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIGestureRecognizer_Class/index.html#//apple_ref/occ/cl/UIGestureRecognizer   https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIPanGestureRecognizer_Class/index.html       1、拍击UITapGestureRecognizer (任意次数的拍击)  

    2、向里或向外捏UIPinchGestureRecognizer (用于缩放)  

    3、摇动或者拖拽UIPanGestureRecognizer (拖动) 

    4、擦碰UISwipeGestureRecognizer (以任意方向)  

    5、旋转UIRotationGestureRecognizer (手指朝相反方向移动)  

     6、长按UILongPressGestureRecognizer (长按)