core animation

Last week Ben Ragheb gave the New York City iPhone Developers group a talk titled "Designing Games with Core Animation or How to drag stuf around with your finger". Ben is the author of iRoboku and he walked us through, Desk Jockey, a simple sample graphics application.

The app lets users drag items (pieces of paper) around the screen and more importantly shows programmers how to use the UIView, CALayer, UIImage and CATransaction classes and work with the touchesBegan, touchesMoved, touchesEnded and touchesCancelled methods.

The presentation and source code for Desk Jockey are available here .