From Idea to App: Creating iOS UI, Animations, and Gestures

Chapter 10. Introduction to iOS Animations

Everybody loves animations. In fact, Apple uses animations throughout iOS that go almost unnoticed—from the subtle disappearance of toolbars and status bars, to the iconic genie effect used on email messages when they are deleted. In Chapter 8, Creating Custom UIViews and UIViewControllers, we talked a little bit about Core Graphics, an Objective-C framework that gives you direct access to the 2D drawing capabilities of Quartz 2D. The animation counterpart to Core Graphics is Core Animation. Leveraging a similar Objective-C framework, Core Animation is a high-performance compositing engine that lets you create your own complex animations in iOS apps.

But let’s take a step back, because this is just an ...