A ViewController for Instagram authentication
What is InstagramAuthViewController?
A UIViewController subclass that handles showing the Instagram login page, the authentication dance and finally returning the access token that can be used to communicate with the Instagram API afterwards.
Inspired by Instagram-Auth-iOS. Used PhotoBrowser as a stepping stone. I rewrote the login part in Swift, replced third-party library code with built-in Cocoa Touch frameworks and made it reusable.