Maintaining font styles with shared typography in Xamarin

ExtensionMethods.cs

using System;
using System.Drawing;
using System.Runtime.Serialization;
using System.Reflection;


#if __IOS__
using Foundation;
using UIKit;
using CoreGraphics;
#endif

namespace Shared
{
	static class ExtensionMethods
	{

		#if __IOS__


		#region Color
		public static UIColor ToUIColor (this Color color) { return UIColor.FromRGB (color.R, color.G, color.B); }
		public static CGColor ToCGColor (this Color color) { return UIColor.FromRGB (color.R, color.G, color.B).CGColor; }
		#endregion

		public static void SetFontStyle (this UIKit.UILabel uiLabel, FontStyle fontStyle) {

		// font
		uiLabel.Font = fontStyle.UIFont;

		// color
		uiLabel.TextColor = fontStyle.Color.ToUIColor();

		}

		public static void SetFontStyle (this UIKit.UIButton uiButton, FontStyle fontStyle) {

			// font
			uiButton.Font = fontStyle.UIFont;

			// color
			uiButton.SetTitleColor (fontStyle.Color.ToUIColor(), UIControlState.Normal);

		}

		#endif

		#if __ANDROID__
		public static Android.Graphics.Color ToAndroidColor (this Color color) { 
			return new Android.Graphics.Color (color.R, color.G, color.B); 
		}

		public static void SetFontStyle (this Android.Widget.TextView textView, FontStyle fontStyle) {

			// font
			textView.Typeface = fontStyle.Typeface;

			// color
			textView.SetTextColor (fontStyle.Color.ToAndroidColor ());

			// size
			textView.TextSize = fontStyle.FontSize;

		}
		#endif

	}
}