touchesBegan: withEvent: 不执行解决
touchesBegan:withEvent:/touchesMoved:withEvent:/touchesEnded:withEvent:等只能被UIView捕获（如有问题请指出对请指出，路过的大牛请勿喷），当我们创建
UIScrollView或UIImageView时，当点击时UIScrollView或UIImageView会截获touch事件，导致touchesBegan:withEvent:/touchesMoved:withEvent:/touchesEnded:withEvent:等方法不执行。解决办法：当UIScrollView或UIImageView截获touch事件后，让其传递下去即可（就是传递给其父视图UIView）
可以通过写UIScrollView或UIImageView的category重写touchesBegan:withEvent:/touchesMoved:withEvent:/touchesEnded:withEvent:等来实现
//
//UIScrollView+UITouch.m
//
//
//CreatedbyMLSon15/11/20.
//Copyright©2015年mls.Allrightsreserved.
//
#import"UIScrollView+UITouch.h"
@implementationUIScrollView(UITouch)
-(void)touchesBegan:(NSSet<UITouch*>*)toucheswithEvent:(UIEvent*)event
{
//选其一即可
[supertouchesBegan:toucheswithEvent:event];
//[[selfnextResponder]touchesBegan:toucheswithEvent:event];
}
@end
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