Pass touches over view bounds

HitTestUIView.swift

import UIKit

class HitTestUIView: UIView {
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        if clipsToBounds || isHidden || alpha == 0 {
            return nil
        }

        for subview in subviews.reversed() {
            let subPoint = subview.convert(point, from: self)
            if let result = subview.hitTest(subPoint, with: event) {
                return result
            }
        }
        return super.hitTest(point, with: event)
    }
}