Written for Xcode 4, iOS 4 in Action guides you from setting up your development environment, through coding your first app, all the way to selling in the App Store. Work through sample applications including a chat client, a video game, an interactive map, background audio, and more as you explore the iOS 4 SDK. iOS 4 in Action, written for Xcode 4, is a detailed, hands-on guide that goes from setting up your development environment, through your first coding steps, all the way to creating a polished, commercial iOS 4 application. You’ll run through examples from a variety of.