手势

• (void)imageShow:(UITapGestureRecognizer *)tap{
  [tap view]//获取手势所在的view 可以通过这个来获取触发手势的View
  }

tap.state 手势的状态 开始或者是结束
@property (nonatomic) NSUInteger numberOfTapsRequired; // Default is 1. The number of taps required to match //点击的次数
@property (nonatomic) NSUInteger numberOfTouchesRequired __TVOS_PROHIBITED; // Default is 1. The number of fingers required to match //触发所需要的手指数量