UIView. Why Does A Subviews Outside its Parent's Extent Not Receive Touches?

Question

I have a simple - trivial - UIView parent/child hierarchy. One parent (UIView). One child (UIButton). The parents bounds are smaller then it\'s child\'s bounds so that a por

Answer 1

Precondition:

You have a UIButton(named as button1) inside a UIView(named as container), and button1 is partially outside the container's bounds.

Problem:

the part outside the container of button1 will not response click.

Solution:

subclass your container from UIView:

class Container: UIView {
    override func pointInside(point: CGPoint, withEvent event: UIEvent?) -> Bool {

        let closeButton = viewWithTag(10086) as! UIButton  //<-- note the tag value
        if closeButton.pointInside(convertPoint(point, toView: closeButton), withEvent: event) {
            return true
        }
        return super.pointInside(point, withEvent: event)
    }
}

Don't forget to give your button1 a tag of 10086