CODEWITHSUNDEEP
core-dataios6nsarray
iCodes
iCodes

Reputation: 1457

How to save contents of Array in CoreData in iOS 6

I am fetching the contents of AddressBook which in turn are copied into an array.Now i want to save this array into CoreData.I know how to insert single values in CoreData.How do i loop through an array to do the same?

Here is what i tried.

 -(void)fetchAddressBook
 {
    ABAddressBookRef UsersAddressBook = ABAddressBookCreateWithOptions(NULL, NULL);

   //contains details for all the contacts
   CFArrayRef ContactInfoArray = ABAddressBookCopyArrayOfAllPeople(UsersAddressBook);

   //get the total number of count of the users contact
   CFIndex numberofPeople = CFArrayGetCount(ContactInfoArray);

   //iterate through each record and add the value in the array
    for (int i =0; i<numberofPeople; i++) {
    ABRecordRef ref = CFArrayGetValueAtIndex(ContactInfoArray, i);
    ABMultiValueRef names = (__bridge ABMultiValueRef)((__bridge NSString*)ABRecordCopyValue(ref, kABPersonCompositeNameFormatFirstNameFirst));
       NSLog(@"name from address book = %@",names); // works fine
       NSString *contactName = (__bridge NSString *)(names);
      [self.reterivedNamesMutableArray addObject:contactName];
       NSLog(@"array content = %@", [self.reterivedNamesMutableArray lastObject]); //This shows null.


}
}

-(void)saveToDatabase
{
  AddressBookAppDelegate *appDelegate =[[UIApplication sharedApplication]delegate];
  NSManagedObjectContext *context = [appDelegate managedObjectContext];
  NSManagedObject *newContact;

  for (NSString *object in self.reterivedNamesMutableArray) // this array holds the name of contacts which i want to insert into CoreData. 
  { 
     newContact = [NSEntityDescription insertNewObjectForEntityForName:@"AddressBook"   inManagedObjectContext:context];
     [newContact setValue:@"GroupOne" forKey:@"groups"];
     [newContact setValue:object forKey:@"firstName"];
      NSLog(@"Saved the contents of Array"); // this doesn't log.
  }
  [context save:nil];
  }

Upvotes: 1

Views: 1116

Answers (1)

Martin R
Martin R

Reputation: 540055

(Note for future readers: This answer refers to the first version of the question. In order to solve the problem, the code in the question has been updated several times.)

Your code creates only a single object newContact, and the loop modifies the same object again and again. If you want multiple objects (one for each address), you have to create each object separately:

for (NSString *object in self.reterivedNamesMutableArray) 
{
    newContact = [NSEntityDescription insertNewObjectForEntityForName:@"AddressBook"   inManagedObjectContext:context];
    [newContact setValue:@"GroupOne" forKey:@"groups"];
    [newContact setValue:object forKey:@"firstName"];
}
[context save:nil];

Upvotes: 2

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