IOS - Get Contact phone use to Address Book - ios

Question

I've a device phone run ios 6.0.1, and i want get all contact in my device. I tried on iphone use to IOS 5.1, 6.1.3 and it's work ok. Unfortunately, when it's run ios 6.0.1, data is null
This is my code:
if ([[[UIDevice currentDevice] systemVersion] floatValue] > 5.2) {
ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL);
if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusNotDetermined)
{
ABAddressBookRequestAccessWithCompletion(addressBookRef,
^(bool granted, CFErrorRef error) {
if (granted)
[self loadContact];
});
}
else if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusAuthorized)
{
[self loadContact];
}
}
else
{
[self loadContact];
}
-(void) loadContact {
ABAddressBookRef addressBooks = ABAddressBookCreate();
allPeople = (__bridge NSArray *)(ABAddressBookCopyArrayOfAllPeople(addressBooks));
peopleCount = ABAddressBookGetPersonCount(addressBooks); }
I don't know, why it doesn't work on ios 6.0.1
I found this link, and do it, but my device have not data.
Can you help me this problem?

Answer 1

The biggest problem in your code is that you need to pass reference "addressBookRef" to your "loadContact" method. "ABAddressBookCreate" won't work for iOS6 - you need to use the one created by ABAddressBookRequestAccessWithCompletion.
Btw. Instead of checking for iOS version better use that to determinate if you need to ask for permissions. Here is a code I'm using - feel free to use it:
-(BOOL)isABAddressBookCreateWithOptionsAvailable {
return &ABAddressBookCreateWithOptions != NULL;
}
- (void) importContactsFromAddressBook
{
ABAddressBookRef addressBook;
if ([self isABAddressBookCreateWithOptionsAvailable]) {
CFErrorRef error = nil;
addressBook = ABAddressBookCreateWithOptions(NULL,&error);
ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
// callback can occur in background, address book must be accessed on thread it was created on
if (error) {
[self.delegate addressBookHelperError:self];
} else if (!granted) {
[self.delegate addressBookHelperDeniedAcess:self];
AddressBookUpdated(addressBook, nil, self);
} else {
// access granted
AddressBookUpdated(addressBook, nil, self);
CFRelease(addressBook);
}
});
} else {
// iOS 4/5
addressBook = ABAddressBookCreate();
AddressBookUpdated(addressBook, NULL, self);
CFRelease(addressBook);
}
}
void AddressBookUpdated(ABAddressBookRef addressBook, CFDictionaryRef info, void *context)
{
NSMutableArray* addressBookContacts = [NSMutableArray array];
//import from address book
CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople( addressBook );
CFIndex nPeople = ABAddressBookGetPersonCount( addressBook );
[helper.delegate performSelectorOnMainThread:#selector(didLoadList:)
withObject:[NSNumber numberWithInt:nPeople]
waitUntilDone:YES];
if(allPeople) CFRelease(allPeople);
[helper.delegate performSelectorOnMainThread:#selector(didComplete:)
withObject:addressBookContacts
waitUntilDone:YES];
}
I have those functions encapsulated into class and delegate is:
#protocol ContactImporterProgressViewDelegate <NSObject>
- (void) didLoadList:(NSNumber*) totalItems;
- (void) updateProgress:(NSNumber*) progress;
- (void) didComplete:(NSArray*) contactsImported;
#end
#property (nonatomic, assign) NSObject <ContactImporterProgressViewDelegate>* delegate;
To use it I would suggest to call it on another thread to don't block UI and show progress (it takes a while when you have 5000 entries):
ContactImporter* importer = [[ContactImporter alloc] init];
importer.delegate = self;
NSOperationQueue *queue = [[[NSOperationQueue alloc] init] autorelease];
NSInvocationOperation *oper = [[[NSInvocationOperation alloc] initWithTarget:importer
selector:#selector(importContactsFromAddressBook)
object:nil] autorelease];
[queue addOperation:oper];
[importer release];