从第二个警报视图按“确定”时，进度 hud 未显示

Question

最初我在单击“是”时显示一个警报，它将显示第二个警报，当用户按下重置时，在第二个警报中我想显示进度视图，并且在此进度视图中调用服务不显示仅发生服务调用我想还显示进度视图，那么如何在第二个警报中按确定后显示进度视图？

      func makeServiceCall()
        {

          Utility.showGlobalProgressHUD(withTitle: "Loading...")
            HTTPRequest.serviceReq(newPin: "129354") { (ResetModel) in
                Utility.dismissGlobalHUDInMainThread()
                Utility.showAlertMessageInMainThread(title: " Reset", msg: "Your request to reset  has been successfully completed.")

            }
        }

 func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
    {
     Utility.confirmationActionSheetMsg(title: "First Alert", msg: "alertMsg", okActionTitle: "Yes", cancelActionTitle: "Cancel", success:
                {
                    Utility.showAlertViewWithTextField(title: "Second Alert", msg: "alertMsg", okActionTitle: "Reset", cancelActionTitle: "Cancel", success: {

                        self.makeServiceCall()

                    }, cancel: {
                        print("Canceled by user")
                    })
                }

            }) {
                print("cancel")
            }
}

实用程序文件是 -

    class Utility{

static func showGlobalProgressHUD(withTitle title: String?) -> MBProgressHUD?
    {
        let window: UIWindow? = UIApplication.shared.windows.last
        let hud = MBProgressHUD.showAdded(to: window, animated: true)
        hud?.labelText = title
        hud?.dimBackground = true
        hud?.cornerRadius = 7
        hud?.margin = 30
        hud?.detailsLabelFont = UIFont.boldSystemFont(ofSize: 15)
        window?.isUserInteractionEnabled = true
        hud?.isUserInteractionEnabled = true;
        return hud
    }

        static func confirmationActionSheetMsg(title: String, msg: String, okActionTitle:String, cancelActionTitle:String, success: (() -> Void)? , cancel: (() -> Void)?)
        {
            let alert = UIAlertController(title: title, message: msg, preferredStyle: UIAlertController.Style.actionSheet)
            let successAction: UIAlertAction = UIAlertAction(title: okActionTitle, style: .destructive)
            {
                action -> Void in
                success?()
            }
            let cancelAction: UIAlertAction = UIAlertAction(title: cancelActionTitle, style: .cancel)
            {
                action -> Void in
                cancel?()
            }

            alert.addAction(successAction)
            alert.addAction(cancelAction)

            UIApplication.shared.keyWindow?.rootViewController?.present(alert, animated: true, completion: nil)
        } 
        static func showAlertViewWithTextField(title: String, msg: String, okActionTitle:String, cancelActionTitle:String, success: (() -> Void)? , cancel: (() -> Void)?)
        {

            let alert = UIAlertController(title: title, message: msg, preferredStyle: UIAlertController.Style.alert)
            alert.addTextField { (textField) in
                textField.placeholder = "Enter new pin."
            }
            alert.addTextField { (textField) in
                textField.placeholder = "Confirm new pin."
            }
            let successAction: UIAlertAction = UIAlertAction(title: okActionTitle, style: .destructive)
            {
                action -> Void in

                let textOfFirstTextfield = alert.textFields?[0].text
                print(textOfFirstTextfield)
                success?()
            }
            let cancelAction: UIAlertAction = UIAlertAction(title: cancelActionTitle, style: .cancel)
            {
                action -> Void in
                cancel?()
            }

            alert.addAction(successAction)
            alert.addAction(cancelAction)

            UIApplication.shared.keyWindow?.rootViewController?.present(alert, animated: true, completion: nil)

        }


    }

Answer 1

当我在显示 hud 时延迟而不是在关闭 hud 时延迟时，它起作用了

func makeServiceCall()
        {
 DispatchQueue.main.asyncAfter(deadline: .now() + 0.1){
          Utility.showGlobalProgressHUD(withTitle: "Loading...")
            HTTPRequest.serviceReq(newPin: "129354") { (ResetModel) in
                Utility.dismissGlobalHUDInMainThread()
                Utility.showAlertMessageInMainThread(title: " Reset", msg: "Your request to reset  has been successfully completed.")

            }
}
        }