Introduction to the Sample App
The sample app for this chapter is a simple address book viewer and editor. When launched, it will retrieve and display a list of all the contacts on your device. There is a plus button in the navigation bar for adding a new contact via the built-in interface, as well as a toggle button to change between showing either phone numbers or street addresses in the list. Additionally, the app has the capability to add a new contact programmatically and an example of using the built-in people picker.
Since the sample app, shown in Figure 5.1, is merely a base navigation controller project and does not have any overhead that is unrelated to Address Book programming, it is prudent to dive right into the functional code ...
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