launchScreenAnimation.swift

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        launchScreenAnimation()
    }
    
    private func launchScreenAnimation() {
        guard let launchScreen = UIStoryboard(name: "LaunchScreen", bundle: nil).instantiateInitialViewController() else { return }
        self.view.addSubview(launchScreen.view)
        if let label = launchScreen.view.viewWithTag(1) as? UILabel {
            UIView.animate(withDuration: 3,
                           delay: 0,
                           options: .curveEaseInOut ,
                           animations: {
                            label.text = "Hello"
                            launchScreen.view.alpha = 0
            }) { (finished) in
                launchScreen.view.removeFromSuperview()
            }
        }
    }
}