Is there any way to view custom fonts/views in the preview section of Android Studio?
I have used font-awesome as a custom typeface
Preview section loads custom views fine as long as these views are correctly written. You have to remember about all small details like draw/onDraw/dispatchDraw methods, measuring and layouting, setting correct theme, styling, providing editMode data, etc.
The deal is that Android Studio has its own Context and Resources classes which are unable to perform certain things. For example these classes lack implementation of reading assets from assets folder and raw resources from raw folder.
To load a custom font, you need assets folder which you don't have access to in Android Studio. Custom view should work, more or less.