GestureRecognizer not responding to tap

Question

After initialisation of by subclass of UIImageView I have the following line of code:

self.userInteractionEnabled = true
self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: "handleTap:"))

I created the necessary associated function :

func handleTap(gestureRecognizer: UITapGestureRecognizer) {
    print("In handler")
}

On tapping on the view in question, "In handler was never printed to the console". I then removed the handler function to see if the compiler would complain about the missing function. It didn't.

I'm positively stumped. I'd truly appreciate any light people can shed on this.

Update: My class is actually a UIImageView as opposed to UIView

Solution 1

I discovered the answer after carefully combing through my code.

One of the parent views was created without supplying a frame:

While it's a noobish enough error to warrant deletion of this questions, odds are someone else will also have the same issue in the future...

Solution 2

I was using UITapGestureRecognizer that I placed on a UILabel using Storyboard.

To get this to work I also had to place a checkmark in the block labeled: "User Interaction Enabled" in the UILabel Attributes Inspector in the Storyboard.

Solution 3

Try this

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)
    self.view.userInteractionEnabled = true
    var tapGesture = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
    self.view.addGestureRecognizer(tapGesture)
}

func handleTap(sender : UIView) {
    println("Tap Gesture recognized")
}

Solution 4

In addition to the other answers, this can be caused by adding the gesture recognizer to multiple views. Gesture recognizers are for single views only.

Reference: https://stackoverflow.com/a/5567684/6543020

Solution 5

I ran into this problem with programmatic views.

My UIView with the gesture recognizer had .isUserInteractionEnabled = true, but it did not respond to taps until I set .isUserInteractionEnabled = true for its parent views as well.

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