Add image view to cell content view

Author: maziar

Example/Demo/ThumbCell.swift

@@ -7,7 +7,7 @@ class ThumbCell:UICollectionViewCell {
 
     override init(frame: CGRect) {
         super.init(frame: frame)
-        addSubview(imageView)
+        contentView.addSubview(imageView)
         imageView.contentMode = .scaleAspectFill
         imageView.clipsToBounds = true
         imageView.translatesAutoresizingMaskIntoConstraints = false