Recipients bar in an iPhone App

I would to insert a recipients bar in an iPhone application, a bar that list address book items when I type chars on it, the same that is used in the iPhone SMS native app开发者_StackOverflow社区lication. How can I do?

This is achieved using a UISearchDisplayController. You can see how to do this in Apple's TableSearch example code.

Apple doesn't provide a public API for that type of input field. You can implement it yourself, or you can look for someone else's implementation, like JSTokenField.