title: iOS: how can I mimic the 'to' field?
body: <p>I'm writing an app that will periodically open an email for the user to email to a predetermined list of contacts in iOS.  I have a text field, and I'm going to allow the user to add email addresses to the text field both from selecting email addresses from the contact list and to enter them by hand.  When entering by hand, I want to be able to autocomplete email addresses in the contact book, much like the 'to' field in the mail app.  How can I do this autocompletion?</p>