A handy library of common UI components that I use in my various projects. They may or may not be of any use to you. Highlights include:
BusyView, a protocol that can be implemented byUIViews to display aUIActivityIndicatorVieworUIProgressViewover its other subviews to indicate that some action is being taken in the backgroundController, a protocol forUIViewControllers that have aDisplayandModelto offload UI and data model responsibilities that are normally in a view controller.UIViewController+Alerts, a protocol thatUIViewControllers can implement to present alert controllers in a standard way.