Custom renderers

You will find Xamarin.Forms covers most of the native controls via cross-platform elements such as XAML objects, but there are some UI elements which we must implement ourselves using CustomRenderers. CustomRenderers allows anyone to override the rendering process for specific controls placed in our XAML, and render native elements on the platform side. We must place a renderer specific to each platform, but for this example, we are only going to apply a custom renderer for the Android project as we want our custom labels to use custom fonts. iOS doesn't need a renderer to allow custom fonts; all we have to do is add the reference to our font file in the info.plist file. Open up the info.plist file in your iOS project and add a new entry called Fonts provided by application (for an array element we simply add the path of our font file GraCoRg_.ttf). Then add the font file into the Resources folder of the iOS project, make sure the build action of the font file is set to...