Accessing Shared Contact Information

The Address Book Framework lets you easily fetch, browse, and edit contacts from multiple sources including CardDav, MobileMe, and Exchange-all from within your app. Learn how to leverage built-in UI classes and APIs to retrieve contacts based on source, and to view and access links between the same contact that occur in multiple sources. The session also covers coding best practices for multi-threaded access.

WWDC 2010 - iOS