Objective-C Image for Contact in Address Book

Contacts.m

@implementation Contacts

+ (UIImage *)imageForContactWithName:(NSString *)name {
    
    // Create a CF string reference from the NSString pointer
    CFStringRef cfName = objc_unretainedPointer(name);
    UIImage *personImage = nil;
    
    // Create a reference to the address book
    ABAddressBookRef addressBook = ABAddressBookCreate();
    
    // Create a reference to an array of all the people that match the passed name string
    CFArrayRef people = ABAddressBookCopyPeopleWithName(addressBook, cfName);
    int num = CFArrayGetCount(people);

    // Create a reference to the first match if there was a match
    ABRecordRef person = (num > 0) ? CFArrayGetValueAtIndex(people, 0) : NULL;
    
    // If there was a matching contact and that contact had image data
    if (num > 0 && ABPersonHasImageData(person)) {
        
        // Have to use objc_unretainedObject for toll-free bridging in Xcode 4.3 w/ ARC
        CFDataRef imageData = ABPersonCopyImageData(person);
        NSData *personImageData = [NSData dataWithData:(NSData *)objc_unretainedObject(imageData)];
        CFRelease(imageData);
        
        personImage = [UIImage imageWithData:personImageData];
    } else if (num > 0) {
        // Contact existed but there was no image data
        personImage = [UIImage imageNamed:@"smile.png"];
    } else {
        // Contact did not exist
        personImage = [UIImage imageNamed:@"frown.png"];
    }
    
    CFRelease(addressBook);
    CFRelease(people);
    
    return personImage;
}

@end