6. Images

Images are abstract representations, storing data that makes up pictures. This chapter introduces Cocoa Touch images, specifically the UIImage class, and teaches you all the basic know-how you need for working with image data on iOS. In this chapter, you learn how to load, store, and modify image data in your applications. You discover how to process image data to create special effects, how to access images on a byte-by-byte basis, and more.

Image Sources

iOS images are generally stored in one of several well-defined places on the device. These sources include the photo album, the application bundle, the sandbox, iCloud, and the Internet, among others. Here’s a review of the most common image sources you’ll use in your applications: ...

Get The Advanced iOS 6 Developer’s Cookbook, Fourth Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.