I have a legacy codebase I am managing, which needs to display alert messages from all over the place. This is terrible practice and is in need of a refactor, but that isn't going to happen any time soon. With iOS 9 I need the ability to fire & forget an alert view, and have the view display and queuing managed for me.
As other people have suggested, this is generally bad practice and breaks the MVC principles. However, if you're managing a legacy codebase and refactoring everything simply isn't an option, i made this class which lets you treat UIAlertController like the old UIAlertView, it manages displaying the alert from any class, and also queue's alerts for you...