public SpeakerPage()
        {
            Title = "Speaker";

            NavigationPage.SetHasNavigationBar(this, true);

            var image = new Image();

            image.SetBinding(Image.SourceProperty, "HeadshotUrl");

            var name = new Label {
                Text     = "Name",
                FontSize = 18
            };

            name.SetBinding(Label.TextProperty, "Name");

            // Twitter is iOS only for now (see Speaker class for binding calculation)
            tweetButton = new TweetButton {
//				BackgroundImage = "tweet.png",
                Text = "Tweet",
            };
            tweetButton.SetBinding(Button.TextProperty, "TwitterHandle");
            tweetButton.SetBinding(Button.IsVisibleProperty, "HasTwitter");

            var bio = new Label {
                Text     = "Bio",
                FontSize = 12
            };

            bio.SetBinding(Label.TextProperty, "Bio");

            var scroll = new ScrollView {
                Orientation = ScrollOrientation.Vertical,
                Content     = new StackLayout {
                    VerticalOptions = LayoutOptions.StartAndExpand,
                    Padding         = new Thickness(20),
                    Children        = { image, name, tweetButton, bio }
                }
            };

            Content = scroll;
        }
		public SpeakerPage ()
		{
			Title = "Speaker";

			NavigationPage.SetHasNavigationBar (this, true);

			var image = new Image ();
			image.SetBinding(Image.SourceProperty, "HeadshotUrl");

			var name = new Label { 
				Text = "Name",
				Font = Font.SystemFontOfSize(18)
			};
			name.SetBinding (Label.TextProperty, "Name");

			// Twitter is iOS only for now (see Speaker class for binding calculation)
			tweetButton = new TweetButton {
//				BackgroundImage = "tweet.png", 
				Text = "Tweet",
			};
			tweetButton.SetBinding (Button.TextProperty, "TwitterHandle");
			tweetButton.SetBinding (Button.IsVisibleProperty, "HasTwitter");

			var bio = new Label { 
				Text = "Bio",
				Font = Font.SystemFontOfSize(12)
			};
			bio.SetBinding (Label.TextProperty, "Bio");

			var scroll = new ScrollView { 
				Orientation = ScrollOrientation.Vertical,
				Content = new StackLayout {
					VerticalOptions = LayoutOptions.StartAndExpand,
					Padding = new Thickness(20),
					Children = { image, name, tweetButton, bio }
				}
			};
			Content = scroll;
		}