ios开发——手势识别状态

手势分为两种：

1:连续类型（前五种状态都有可能出现）如：Pinch

2.离散类型（1、4、6）如：Tap

1.UIGestureRecognizerStatePossible

2.UIGestureRecognizerStateBegan

3.UIGestureRecognizerStateChanged

4.UIGestureRecognizerStateEnded

5.UIGestureRecognizerStateCancelled

6.UIGestureRecognizerStateFailed