title: Add UITextView on UIAlertView (iOS, Xamarin) without using any third party lib
body: <p>I want to display a dialog in iOS and add a <code>UITextView</code> to the view of the dialog. The <code>UITextView</code> textView has text with clickable links for email,phone and url. I am able to trigger the dialog but only with the title and an ok button. There is no textview being added to the dialog view. I am not sure if the issue here is with the textview or with the way the view is being added to the dialog. </p>
  
  <p>Please check my code below: </p>
  
  <pre><code> UITextView textView = new UITextView();
   textView.Editable = false;
   textView.DataDetectorTypes = UIDataDetectorType.All;
   textView.Message = message;
   var dlg = UIAlertController.Create(Title ?? String.Empty, null, UIAlertControllerStyle.Alert);
   dlg.View.AddSubview(textView);
   dlg.AddAction(UIAlertAction.Create(OkText, UIAlertActionStyle.Default, action =&gt; Submit()));                
  
   var top = Utils.GetTopViewController();
   top.PresentViewController(dlg, animated: true, completionHandler: null);
  </code></pre>
  
  <p>Thanks,</p>