UIScrollView不像样touchBegain点击事件

1：@property MyScrollView *scrollView;

2：给MyScrollView，增长类别：MyScrollView+Touch

3：在类别里实现下面三个方法：

@implementation MyScrollView (Touch)
- (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

4：- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
[self hiddenkeyBoard];
}