import Lottie
import LottieProgressHUD

class AppDelegate: UIResponder, UIApplicationDelegate
{
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool
    {
        if let progressAnimation = Animation.named("progress-animation.json")
        {
            ProgressHUD.register(animation: progressAnimation)
        }
        else
        {
            fatalError("Unable to find the animation file")
        }
 
        return true
    }
}

class ViewController: UIViewController
{
    private func buttonDidTap()
    {
        ProgressHUD.show()

        someAsyncOps(
            completion: {
                ProgressHUD.dismiss() })
    }
}