Advanced Photo Interfaces
In this chapter, you will explore lower-level camera programming topics by building your own image-capture and photo-picker classes, similar to the defaults provided by UIImagePickerController. Along the way, you will see how to configure the hardware camera for image capture, how to access photos directly from the Photos app, and what you need to do to present this raw data in a user interface.
You will use the UIImagePickerController as your reference for functionality, so if you are unsure how to present the class or handle its output, it would be a good idea to review Chapter 2.
Although it may seem like a lot of work to replicate functionality iOS already offers, having a camera interface that looks ...