iOS swift 5: 對話框 Show Message Box(Dialog)-UIAlertController

Swift 顯示警告訊息有兩種方式

解決方案來源:
  iOS - 客製化Dialog
  PopupDialog：採用Swif編寫的一個簡單、可定製的iOS彈出對話框
  UIAlertController  顯示警告訊息和選單

方式一
 使用 UIAlertController
 使用 CustomAlertController範例
 UIAlertController 教程：讓你輕鬆在 UIViewController 以外的地方呈現警告
 Making an Alert in iOS

方式二
 使用  PopupDialog

 import PopupDialog
 func ShowMessageBoxDlg( nTitle:Int, nMessage:Int)
 { 
  let Title = NSLocalizedString( String(nTitle), comment: "")
  let Message = NSLocalizedString( String(nMessage), comment: "")
  let PopupDlg = PopupDialog( title: Title,
                           message: Message,
                           buttonAlignment: .horizontal,
                           transitionStyle: .zoomIn,
                           tapGestureDismissal: true,
                           panGestureDismissal: true,
                           hideStatusBar: true)
   {
   }
   let MagOk = NSLocalizedString( "Ok", comment: "")
   let buttonOk = DefaultButton(title: MagOk)
   {
   }
   PopupDlg.addButtons([buttonOk])
   self.present( PopupDlg, animated: true, completion: nil)
 }

方式三
 自行用 UIViewController 設計一個 Dialog

 畫面部份同  iOS - 客製化Dialog
 多花點時間 就可以做出一個和Windows 一樣的MessageBob()

import UIKit
//-------------------------------------------------------------------
var bShowWaitDialogClose: Bool = false
//-------------------------------------------------------------------
class TShowWaitDialogVc: UIViewController
{
 var nCheckCloseDialogTimer:Timer?
 var sTitleStr:String      = ""
 var sMessageStr:String    = ""

 var activityIndicator:UIActivityIndicatorView = UIActivityIndicatorView()

 @IBOutlet weak var ViewDialog: UIView!
 @IBOutlet weak var LabelTitleStr: UILabel!
 @IBOutlet weak var LabelMsgStr: UILabel!
 //-------------------------------------------------------------------
 override func viewDidLoad()
 {
  super.viewDidLoad()
  bShowWaitDialogClose = false
  let yourColor : UIColor = UIColor(red:170.0/255.0, green:170.0/255.0, blue:170.0/255.0, alpha: 1.0 )
  ViewDialog.layer.masksToBounds = true
  ViewDialog.layer.borderColor = yourColor.cgColor
  ViewDialog.layer.cornerRadius = 30
  ViewDialog.layer.borderWidth = 2
  ViewDialog.layer.shadowOffset = CGSize(width: 5, height: 5)
  ViewDialog.layer.shadowOpacity = 0.7
  ViewDialog.layer.shadowRadius = 5
  ViewDialog.layer.shadowColor = UIColor(red:170.0/255.0, green:170.0/255.0, blue:170.0/255.0, alpha: 1.0 ).cgColor

  LabelTitleStr.text = sTitleStr
  LabelMsgStr.text = sMessageStr
  CheckCloseDialogTimerInit()
  ActivityIndicatorStart()
 }
 //-------------------------------------------------------------------
 func CheckCloseDialogTimerInit()
 {
  nCheckCloseDialogTimer = Timer.scheduledTimer(timeInterval: 0.2, target: self,
                           selector:#selector(self.CheckCloseDialogTimerDown),
                           userInfo: nil, repeats: true)
 }
 //-------------------------------------------------------------------
 @objc func CheckCloseDialogTimerDown()
 {
  if( bShowWaitDialogClose == true)
  {
   self.nCheckCloseDialogTimer?.invalidate()
   ActivityIndicatorStop()
   dismiss(animated: true, completion: nil)
  }
 }
 //-------------------------------------------------------------------
 @objc func ActivityIndicatorStart()
 {
  activityIndicator.center = self.view.center

  activityIndicator.hidesWhenStopped = false
  activityIndicator.style = UIActivityIndicatorView.Style.gray
  activityIndicator.isHidden = false
  view.addSubview(activityIndicator)

  activityIndicator.startAnimating()
  UIApplication.shared.beginIgnoringInteractionEvents()
 }
 //-------------------------------------------------------------------
 @objc func ActivityIndicatorStop()
 {
  self.activityIndicator.stopAnimating()
  self.activityIndicator.isHidden = true
  UIApplication.shared.endIgnoringInteractionEvents()
 }
 //-------------------------------------------------------------------
}
//-------------------------------------------------------------------

    func ShowWaitDialogVcShow()
    {
     bShowWaitDialogClose = false
     let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
     let ShowWaitDialogVc = storyBoard.instantiateViewController(withIdentifier: "ShowWaitDialogVcID") as! TShowWaitDialogVc
     ShowWaitDialogVc.sTitleStr = "Processing"
     ShowWaitDialogVc.sMessageStr = "In Processing, Please Wait..."
     self.present( ShowWaitDialogVc, animated: true, completion: nil)
    }

 func BtnCloseDialg(_ sender: Any)
 {
  print("FUNC: \(#file), \(#function)")
  bShowWaitDialogClose = true
 }

    var hBtnTouchTimer:Timer?
    @IBAction func BtnTestOnClick(_ sender: Any)
    {
     bShowWaitDialogClose = false
     hBtnTouchTimer = Timer.scheduledTimer( timeInterval: 20, target: self,
                                            selector:#selector( self.BtnTouchTimerDown2),
                                            userInfo: nil, repeats: false)
     ShowWaitDialogVcShow()
    }
    @objc func BtnTouchTimerDown2()
    {
     if( bShowWaitDialogClose == false)
      bShowWaitDialogClose = true
    }