Ignore/intercept swipes on subview in swift

Question

I currently have a single page swift application (for iOS) running on a custom view controller. Within that view controller, I've embedded another custom UIView to display some content / handle some user interaction.

I'm wondering if there is a way to intercept a UISwipe, which is registered in the custom view controller, and have swift ignore it if it occurs on the embedded view. I know that for taps, I could set my view controller as the delegate for the tap gesture recognizer and do something like the following:

// not exact syntax
func gestureRecognizer(touch){
     if (touch.view == self.embeddedView || (touch.view.isDescendantOf(embeddedView))!){
           return false
      }
   return true
}

However I can't find any functionality that does the same for swipes. Could someone point me in the right direction?

Its not clear what you want here: should the swipe be ignored only if it *starts* on the embedded view, or should any motion while on that view be ignored? The former is trivial, the later might be more difficult. — Maury Markowitz, Feb 15 '17 at 15:44
sorry for not being so clear. I would like to ignore the swipe if it starts on the embedded view. — finn, Feb 15 '17 at 15:57

score 4 · Accepted Answer · answered Feb 15 '17 at 16:09

4

Set the Custom View Controller as the delegate of the swipe gesture and override shouldReceiveTouch method.

func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
     return !CGRectContainsPoint(embeddedView.bounds, touch.locationInView(embeddedView))
}

answered Feb 15 '17 at 16:09

Sahana Kini

562
2
8

Thank you so much! I +1'd but don't have enough rep to show it yet. very much appreciated. – finn Feb 15 '17 at 16:13
@finn you can (and should if it anwered your question) accept the answer by clicking the grey checkmark on the left of the answer. – shallowThought Feb 15 '17 at 16:16
@finn please accept the answer if its correct, refer http://stackoverflow.com/help/someone-answers – Sahana Kini Feb 15 '17 at 16:22
accepted! First post here, still getting used to it. – finn Feb 15 '17 at 16:23

score 0 · Answer 2 · answered Mar 20 '20 at 22:57

0

swift 5


func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
    return !containerView.bounds.contains(touch.location(in: containerView))
}

answered Mar 20 '20 at 22:57

nsleche

108
1
7

score -1 · Answer 3 · edited May 23 '17 at 12:00

-1

There is a UISwipeGestureRecognizer wich u can implement like this:

let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(self.swipeRightDetected))
self.embeddedView.addGestureRecognizer(swipeRight)

Look at this answer for more information: https://stackoverflow.com/a/24215844/5664183

edited May 23 '17 at 12:00

Community

1
1

answered Feb 15 '17 at 15:45

tmiedema

174
7

I understand how to implement a swipe gesture recognizer. I'm trying to figure out how to ignore the swipe if it starts on my embedded view. Sorry if that wasn't clear. – finn Feb 15 '17 at 16:00

Ignore/intercept swipes on subview in swift

3 Answers3