How to Apply card view cornerRadius & shadow like iOS appstore in swift 4

Create a new UIView subclass named "CardView" like below:

import Foundation
import UIKit

@IBDesignable
class CardView: UIView {

    @IBInspectable var cornerRadius: CGFloat {
        get {
            return layer.cornerRadius
        }
        set {
            layer.cornerRadius = newValue
            layer.shadowRadius = newValue
            layer.masksToBounds = false
        }
    }

    @IBInspectable var shadowOpacity: Float {
        get {
            return layer.shadowOpacity
        }
        set {
            layer.shadowOpacity = newValue
            layer.shadowColor = UIColor.darkGray.cgColor
        }
    }

    @IBInspectable var shadowOffset: CGSize {
        get {
            return layer.shadowOffset
        }
        set {
            layer.shadowOffset = newValue
            layer.shadowColor = UIColor.black.cgColor
            layer.masksToBounds = false
        }
    }

}

Then just set "CardView" as Custom Class for your view from XCode Interface Builder. It's simple and easily configurable!

Just add a subview to the cell and manipulate it's layer property. Tweak the values to your liking. The following code should give a similar result to how it looks in the App Store:

    // The subview inside the collection view cell
    myView.layer.cornerRadius = 20.0
    myView.layer.shadowColor = UIColor.gray.cgColor
    myView.layer.shadowOffset = CGSize(width: 0.0, height: 0.0)
    myView.layer.shadowRadius = 12.0
    myView.layer.shadowOpacity = 0.7