shouldReceiveTouch on UITableViewCellContentView

Question

I'm trying to ignore UITapGestureRecognizer taps on a UITableView with the following:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
      if ([touch.view isKindOfClass:[UITableViewCellContentView class]]) {
          return NO; // ignore the touch
      }
      return YES; // handle the touch
}

It won't compile: "Use of undeclared identifier 'UITableViewCellContentView'

Undocumented class? Need to subclass? Better way to accomplish this?

Thanks for any help.

score 42 · Accepted Answer · edited Jun 20 '13 at 11:26

42

This seems to do it:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
    if([touch.view isKindOfClass:[UITableViewCell class]]) {
         return NO;
    }
    // UITableViewCellContentView => UITableViewCell
    if([touch.view.superview isKindOfClass:[UITableViewCell class]]) {
         return NO;
    }
    // UITableViewCellContentView => UITableViewCellScrollView => UITableViewCell
    if([touch.view.superview.superview isKindOfClass:[UITableViewCell class]]) {
         return NO;
    }
    return YES; // handle the touch
}

edited Jun 20 '13 at 11:26

Sergio del Amo

76,835
68
152
179

answered Nov 07 '12 at 17:53

Jimmy_m

1,568
20
24

1

This is broken in ios7. touch.view.superView == UITableViewCellScrollView – Legolas Sep 13 '13 at 21:01
1

As mentioned by Legolas, Broken on iOS7. As the hierarchy, changed, a fourth check is required. .superview.superview.superview must also be checked! – Francois Robert Sep 30 '13 at 21:50
2

I catch it on `touch.view.superview.superview` on `iOS ver 7.0` => The **3rd check**... – Aviel Gross Jan 06 '14 at 10:24
If you need the whole table (including areas without cells present), replace UITableViewCell with UITableView instead. – CyberMew Sep 16 '14 at 05:09

score 11 · Answer 2 · answered Jul 09 '14 at 08:24

11

You can do this.

    - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
    {
        if ([NSStringFromClass([touch.view class]) isEqualToString:@"UITableViewCellContentView"]) {
            return NO;
        }else{
            return YES;
        }
    }

answered Jul 09 '14 at 08:24

guangxyou

121
1
4

Very nice, would be nice to know more about this – vib Aug 11 '16 at 11:59

score 6 · Answer 3 · answered Mar 25 '14 at 10:45

6

I've just came across this problem, and the following solution works on all iOS versions, without having the risk of Apple changing the view hierarchy of the tableView. Basicaly, keep a reference to your UITableView:

 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
      if([touch.view isDescendantOfView:detailsTableView]) {
          return NO;
      }
      return YES;
   }

//isDescendantOfView:YES if the receiver is an immediate or distant subview of view or if view is the receiver itself; otherwise NO.

answered Mar 25 '14 at 10:45

Durican Radu

1,327
11
12

Thanks for this solution. In iOS8 they changed the view hierarchy again of UITableView. – masam Jan 27 '15 at 13:11
Should be the accepted answer. It solve the hierarchy changing problem – nahung89 Dec 13 '19 at 06:08

score 2 · Answer 4 · answered Jan 11 '16 at 21:52

Here's the swift solution for the selected answer.

I couldn't use the "MyTableView" named dependency check because I had a custom BaseViewController that many view controllers derive from. Some view controllers have a tableview, some have a collection view or both but in all cases the gesture recognizer steals their touches.

I didn't want to put this gesture handling code in every subclass, so the only way I got it working in the base class is this:

extension BaseViewController: UIGestureRecognizerDelegate {

    func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
        var view = touch.view
        while view != nil {
            if view!.isKindOfClass(UICollectionView) || view!.isKindOfClass(UITableView) {
                return false
            } else {
                view = view!.superview
            }
        }
        return true
    }

}

score 0 · Answer 5 · answered Aug 02 '19 at 13:10

I think its clear and simpler to check touch region.

func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer,
                       shouldReceive touch: UITouch) -> Bool {

    let point = touch.location(in: viewContentContainer)
    return !tableRules.frame.contains(point)
}

shouldReceiveTouch on UITableViewCellContentView

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