public void ShowLoading()
        {
            if (_isBusy)
            {
                return;
            }
            //var currenWindow = UIApplication.SharedApplication.KeyWindow;

            if (loadingView == null)
            {
                loadingView = LoadingView.Create();
                loadingView.ConfigureView(View.Frame);
                View.Add(loadingView);
                //loadingView.ConfigureView(currenWindow.Frame);
                //currenWindow.Add(loadingView);
            }
            else if (!View.Subviews.Contains <UIView>(loadingView))
            {
                View.Add(loadingView);
            }
            else
            {
                View.BringSubviewToFront(loadingView);
            }

            /*else if (!currenWindow.Subviews.Contains<UIView>(loadingView))
             * {
             *  currenWindow.Add(loadingView);
             * }
             * else
             * {
             *  currenWindow.BringSubviewToFront(loadingView);
             * }*/

            loadingView.StartAnimation();
            _isBusy = true;
        }