How to query AddressBook contacts according to the given number？

Question

I use the method loop all the contacts in addressbook， but It's too hard when too many contacts in AddressBook.

possible duplicate of [what the best method to query addressbook contact with a phone number?](http://stackoverflow.com/questions/9406181/what-the-best-method-to-query-addressbook-contact-with-a-phone-number) — coneybeare, Feb 23 '12 at 03:29

score 0 · Answer 1 · answered Feb 23 '12 at 02:47

0

Try to loop the contacts in other thread in background. Try Grand Central Dispatch.

answered Feb 23 '12 at 02:47

fannheyward

1 Answers1