viewDidLayoutSubviews for Custom UITableViewCell

The correct place is inside layoutSubviews:

class MyCell : UITableViewCell {
    override func layoutSubviews() {
        super.layoutSubviews()
        // do your thing
    }
}

It will work if you animate your view inside draw function in tableViewCell

override func draw(_ rect: CGRect) {
    super.draw(rect)

    //Your code here
}