Add Corner Radius and drop shadow to UICollectionViewCell Swift 3

Question

I'm trying to add corner radius + dropdown shadow to my UICollectionView Cell,

my Cell sturcuture is like this:

I added view to add shadow on it, and try to add corner radius to the to subviews: the white one and the imageview, I used the following code:

        let frame = CGRect(x:0, y: 0, width: UIScreen.main.bounds.width, height: 80)

    shadowingViewOutlet.layer.masksToBounds = false
    shadowingViewOutlet.layer.shadowColor = UIColor.black.cgColor
    shadowingViewOutlet.layer.shadowOffset = CGSize(width: CGFloat(0.0), height: CGFloat(3.0))
    shadowingViewOutlet.layer.shadowOpacity = 0.5

    if shadowingViewOutlet.layer.shadowPath != nil {


        shadowingViewOutlet.layer.shadowPath = UIBezierPath(roundedRect:frame, cornerRadius:3).cgPath
    }

but that dosen't work fine!

Anyone try to apply the same functionlaity to UICollectionViewCell and have a result in it?

please help.

Thanks.