How do you stop UITapGestureRecognizer from catching EVERY tap?

Question

Hello I have an opengl view and on that I have a tab bar. I'm using a tap recognizer to tap different 3d objects on screen. In the tab bar I have a button but it doesn't work because the tap recognizer catches these taps too. How do I stop this? I've already tried this:


- (BOOL) gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
  if ([touch.view isKindOfClass:[UIBarButtonItem class]]) return FALSE;
  return TRUE;
}

I think I am somehow comparing wrong classess because when I debug it returns TRUE always.

your if-statement can never return false - a button is not a view... But you could check via a breakpoint in the debugger which type the view is you get on different tap positions. — Axel, Feb 03 '11 at 12:01
Oh..I just noticed that `UIBarButtonItem` is not an `UIView` :) Thanks. — gyozo kudor, Feb 03 '11 at 12:14

i-- · Accepted Answer · 2015-09-03T13:43:22.180

33

Or you can just do [singleTap setCancelsTouchesInView:NO]. Example:

UITapGestureRecognizer *singleTap = [
    [UITapGestureRecognizer alloc]
    initWithTarget: self
    action: @selector(yourSelector:)
];
[singleTap setCancelsTouchesInView:NO];
[[self view] addGestureRecognizer: singleTap];

edited Sep 03 '15 at 13:43

answered Jul 10 '12 at 18:39

i--

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Also available in the Interface Builder as _Canceled in View_. Great! – Rudolf Adamkovič Jan 23 '13 at 08:31
Only thing that worked. And like a charm, might I add! no messing with the rest of the code. thks! – StinkyCat Jul 19 '13 at 12:36

score 28 · Answer 2 · edited May 23 '17 at 12:02

28

  if ([touch.view.superview isKindOfClass:[UIToolbar class]]) return FALSE;

This is how I got it to work. The superview is a UIToolbar, probably UIBarButtonIttem is a view after all.

edited May 23 '17 at 12:02

Community

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answered Feb 03 '11 at 12:29

gyozo kudor

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This worked where hit testing on the gesture recognizer's view failed. To be clear, I was working within a UITableView and the gesture's location was reported as `{0, contentOffset - someConstant}`. Checking the touch's view is a good solution. Thanks. – Justin May 04 '11 at 17:28

How do you stop UITapGestureRecognizer from catching EVERY tap?

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