Tap recognizer around UIImageView

Question

Good day, I have UIImageView inside UIView and I want to handle event, when user tap on UIView background, but not on UIImageView. How can I achieve it? I read about UITapGestureRecognizer, but it confuse me a little.

P.S. If u can plz answer in swift.

Answer 1

If you want to disable UITapGestureRecognizer on the child view of your main view then you have to enable User Interaction of your UIImageView like this

imgTest.userInteractionEnabled = true;

then you have to set the Delegate of your UITapGestureRecognizer to detect the UITouch of the view, set the delegate like this

let touch  = (UITapGestureRecognizer(target: self, action: "tapDetected:"))
touch.delegate = self
self.view.addGestureRecognizer(touch)

Then you have to implement the Delegate method of UITapGestureRecognizer in which you will detect the view which is currently touched like this

func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
    if touch.valueForKey("view")!.isKindOfClass(UIImageView) {
        return false
    } else {
        return true
    }
}

In the above code i have disable the tap gesture on UIImageView

Now, this method will work only for your self.view not for UIImageView

func tapDetected(sender: UITapGestureRecognizer) {
        self.dismissViewControllerAnimated(false, completion: nil)
}