typedef NS_ENUM(NSInteger, UIScrollViewKeyboardDismissMode) {
UIScrollViewKeyboardDismissModeNone,
//当拖动时就隐藏键盘
UIScrollViewKeyboardDismissModeOnDrag, // dismisses the keyboard when a drag begins
//键盘会跟随拖动手动进行处理,向下滑动会隐藏键盘,同时向上滑动会取消隐藏
UIScrollViewKeyboardDismissModeInteractive, // the keyboard follows the dragging touch off screen, and may be pulled upward again to cancel the dismiss
} NS_ENUM_AVAILABLE_IOS(7_0);
@property(nonatomic) UIScrollViewKeyboardDismissMode keyboardDismissMode NS_AVAILABLE_IOS(7_0); // default is UIScrollViewKeyboardDismissModeNone
所以不用在UIScrollView的代理方法进行操作了,直接使用下面代码就可以做到滑动时收起键盘
self.scrollView.keyboardDismissModel = UIScrollViewKeyboardDismissModeOnDrag;
