Unlike the file explorer, which does not (as yet) come as a standard with Android, a contact manager is a pretty standard application. So rolling your own might not seem so useful.
Still, precisely because contact management is a core part of Android, learning how to manage, maintain, and update your contact list programmatically is a useful thing. Plus, this should give us a chance to refine our techniques even more.
Figure 7-1. It's good to be able to keep track of your friends . . .
Before we plunge into the intricacies ...