用过UIScrollView的都会发现UIScrollView不会响应touch事件，这样就无法在touches相关的方法中做一些事情了，比如收回键盘等等。其实写个categroy就可以解决这个问题了。
具体实现如下：
@implementation UIScrollView (UITouchEvent) - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { [[self nextResponder] touchesBegan:touches withEvent:event]; [super touchesBegan:touches withEvent:event]; } -(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { [[self nextResponder] touchesMoved:touches withEvent:event]; [super touchesMoved:touches withEvent:event]; } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { [[self nextResponder] touchesEnded:touches withEvent:event]; [super touchesEnded:touches withEvent:event]; } @end
备注：转自http://blog.csdn.net/volcan1987/article/details/6677370
原文：http://www.cnblogs.com/haili/p/4112369.html