Creating iOS Apps: Develop and Design, Second Edition

Chapter 5. Loading and Saving Data

This chapter will focus on loading and saving data. We will begin with a brief discussion on living within the iOS file system. Working on an iOS device is different from working on a desktop machine. The most obvious change is, of course, the added security. We, as developers, are severely limited as to where we can save, open, or modify files. But, the differences go much deeper. For example, we need to make sure our application’s data plays nicely with the app’s updates and backups. We even need to rethink the way we handle UI design. In the typical iOS application, there are no save buttons and no folders or files to search through. We need to make the whole procedure more transparent and more natural to ...