... the utilities built into the iPhone. In this chapter, we’re going to look at these features as part of a general exploration of media. We’ll provide deep cov- erage on images, some information ... complexities that underlie its use). We’re going to talk about those briefly here, but, for the most part, Core Graphics will wait for the next chapter, which concen- trates on the entire Quartz 2D ... animation 348 C HAPTER 18 Media: images and sounds The trick is that these methods cannot be used as part of viewDidLoad: or whatever other method you usually use to load up your objects. That’s because...