Core Graphics Tutorial: Shadows and GlossUntil iOS 6, gloss effects were common across iOS, from buttons and bars to almost any element in the UIKit. With iOS 7, Apple changed its design approach to a flatter interface. That doesn’t mean that it’s wrong or outdated to use gloss effects! It’s still important to know how to create them. Core Graphics makes it easy. Getting Started For this tutorial, you’ll work on a project called Cool Tab
