19. Working with Images and Filters

Images and image handling are central to many iOS apps. At a basic level, images are a necessary part of customizing the user interface, from custom view backgrounds to custom buttons and view elements. Beyond that, iOS 6 added very sophisticated support for customizing user-provided images with the Core Image library. Previous to iOS 6, doing image manipulations required custom image-handling code using Quartz or custom C libraries. With the addition of Core Image, many complex image-editing functions demonstrated by successful apps, like Instagram, can now be handled by iOS with minimal effort.

This chapter describes basic image handling: how to load and display an image, how to handle images on devices with ...

Get iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK 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.