BlurredImageView.swift

import UIKit

class BlurredImageView: UIImageView {

    private let blurEffectView: UIVisualEffectView = {
        let blurEffect = UIBlurEffect(style: .light)
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        return blurEffectView
    }()

    override var image: UIImage? {
        didSet {
            guard self.image != nil else {
                self.blurEffectView.removeFromSuperview()
                return
            }
            self.blurEffectView.frame = self.bounds
            self.addSubview(self.blurEffectView)
        }
    }
}