gistfile1.txt

class OnboardingViewControllerTemplate: UIViewController {

    @IBOutlet weak var demoImageView: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        
        print(">>>> self.demoImageView.bounds.width \(self.demoImageView.bounds.width)")
        
        demoImageView.subviews.forEach({ $0.removeFromSuperview() })

        let v = GradientView()
        v.frame = CGRect(
            x: 0,
            y: self.demoImageView.bounds.height - 100,
            width: self.demoImageView.bounds.width,
            height: 100
        )
        
        self.demoImageView.addSubview(v)
    }
}