scrollview/tableview 无法响应touch事件

- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(keyboardHide:)];
//设置成NO表示当前控件响应后会传播到其他控件上，默认为YES。
tapGestureRecognizer.cancelsTouchesInView = NO;
//将触摸事件添加到当前view
[self.view addGestureRecognizer:tapGestureRecognizer];
}

-(void)keyboardHide:(UITapGestureRecognizer*)tap{
[textFiled resignFirstResponder];
}

@implementation UIScrollView (Touch)

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"touch begin");
if(!self.dragging)
{
[[self nextResponder] touchesBegan:touches withEvent:event];
}
[super touchesBegan:touches withEvent:event];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
if(!self.dragging)
{
[[self nextResponder] touchesMoved:touches withEvent:event];
}
[super touchesMoved:touches withEvent:event];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
if(!self.dragging)
{
[[self nextResponder] touchesEnded:touches withEvent:event];
}
[super touchesEnded:touches withEvent:event];
}

@end