Implementing UIViewController Containment

Come learn about how to achieve the appearance of infinite scrolling in either one or two dimensions. We’ll also look at how to change the resolution of drawn content during zooming, without requiring the use of CATiledLayer.

UIKit has strong ties to Core Animation, and an understanding of this relationship can provide important insight into the behavior and performance of your UIKit application. We’ll walk through the fundamentals of UIView and CALayer geometry, convert a pure Core Animation application to use UIKit, and explore some tools Core Animation offers to enhance your application’s appearance and performance. Learn various techniques to provide optimal edge anti-aliasing, group opacity, clipping, shadows and more.

Core Animation is the layer-based animation system at the heart of the dynamic user experience seen in iOS and Mac OS X. See Core Animation in action and explore its intuitive programming model for creating compelling animations. Understand how to maintain high frame rates and learn recommended practices to deliver smooth transitions and effects in your apps.

In Lion, we revisit the basics of how views are placed in windows for the first time since Mac OS X 10.0. Springs and struts (i.e. autoresizing masks) are out, dashed blue Interface Builder guides are in. Rather than being one-off helpers for setting a frame in IB, guides become persistent objects that maintain a relationship at runtime. Come see what’s going on, and what merited such a big change.