Image not displayed on UICollectionViewCell

I am trying to get images on contacts,here i used UICollectionViewCell but in the collection view i didn't get image for the contact,i get only name and number.Here my code is

    - (void)displayPerson:(ABRecordRef)person
{
    NSString* name = (__bridge_transfer NSString*)ABRecordCopyValue(person,
                                                                    kABPersonFirstNameProperty);
    NSLog(@"%@",name);
    NSString* phone = nil;
    ABMultiValueRef phoneNumbers = ABRecordCopyValue(person,
                                                     kABPersonPhoneProperty);
    if (ABMultiValueGetCount(phoneNumbers) > 0) {
        phone = (__bridge_transfer NSString*)
        ABMultiValueCopyValueAtIndex(phoneNumbers, 0);
    } else {
        phone = @"[None]";
    }
    NSLog(@"%@",phone);
    UIImage *img ;

    if (person != nil && ABPersonHasImageData(person)) {
        if ((&ABPersonCopyImageDataWithFormat) != nil ) {

            img= [UIImage imageWithData:(__bridge NSData *)ABPersonCopyImageDataWithFormat(person, kABPersonImageFormatThumbnail)];
        }

    } else {

        NSString *imageUrlString = @"http://www.google.co.in/intl/en_com/images/srpr/logo1w.png";
        NSURL *url = [NSURL URLWithString:imageUrlString];
        NSData *data = [[NSData alloc] initWithContentsOfURL:url];
        img= [UIImage imageWithData:data];

    }
    NSString *string ;//
     string =[NSString stringWithFormat:@"%@",img];
    NSLog(@"%@",img);
    self.name.text=name;
    self.number.text=phone;
    [self.nameArray addObject:name];
   [self.imageArray addObject:string];
    NSLog(@"%@",self.nameArray);
      NSLog(@"%@",self.imageArray);
    [self.collectionView reloadData];


    [self.collectionView performBatchUpdates:^{
        [self.collectionView reloadSections:[NSIndexSet indexSetWithIndex:0]];
    } completion:nil];

}

Can you please suggest me how can you solve this,thank you.