public FacebookLoginPage(FacebookConnection connection)
        {
            this.Title = "FacebookLoginPage";

         //   Connection = new FacebookConnection(key, secret, scope);
         //   connection.SignInCompleted += Connection_SignInCompleted;
            
            this._Connection = connection;

            this._Browser = new WebView();
			//_Browser.Source = new UrlWebViewSource() { Url = _Connection.LoginUri().AbsoluteUri };
            this._Connection.SignIn(this._Browser);

			Label lbl = new Label ()
			{ Text = "Connecting..." };
			lbl.SetBinding(Label.IsVisibleProperty, "IsVisible", BindingMode.OneWay, new BooleanInverterConverter());
            lbl.BindingContext = this._Browser;

            this._BaseLayout = new StackLayout()
            {
				Orientation = StackOrientation.Vertical,
				HorizontalOptions = LayoutOptions.FillAndExpand,
				VerticalOptions = LayoutOptions.FillAndExpand,
			};

            this._BaseLayout.Children.Add(lbl);
            this._BaseLayout.Children.Add(this._Browser);

            this._Browser.IsVisible = false;
                        	

            Padding = new Thickness(0, Device.OnPlatform(20, 0, 0), 0, 0);  // Accomodate iPhone status bar.
            Content = this._BaseLayout;
        }
        public FacebookLoginPage(FacebookConnection connection)
        {
            this.Title = "FacebookLoginPage";

            //   Connection = new FacebookConnection(key, secret, scope);
            //   connection.SignInCompleted += Connection_SignInCompleted;

            this._Connection = connection;

            this._Browser = new WebView();
            //_Browser.Source = new UrlWebViewSource() { Url = _Connection.LoginUri().AbsoluteUri };
            this._Connection.SignIn(this._Browser);

            Label lbl = new Label()
            {
                Text = "Connecting..."
            };

            lbl.SetBinding(Label.IsVisibleProperty, "IsVisible", BindingMode.OneWay, new BooleanInverterConverter());
            lbl.BindingContext = this._Browser;

            this._BaseLayout = new StackLayout()
            {
                Orientation       = StackOrientation.Vertical,
                HorizontalOptions = LayoutOptions.FillAndExpand,
                VerticalOptions   = LayoutOptions.FillAndExpand,
            };

            this._BaseLayout.Children.Add(lbl);
            this._BaseLayout.Children.Add(this._Browser);

            this._Browser.IsVisible = false;


            Padding = new Thickness(0, Device.OnPlatform(20, 0, 0), 0, 0);  // Accomodate iPhone status bar.
            Content = this._BaseLayout;
        }