Array objects

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• Duncan C Posts: 8,014Tutorial Authors, Registered Users

  May 2012

  obaidjawad;430235 said:

  I'm adding the objects to the array but it is only getting added to the index 0.
  
  

  
  - (void)viewDidLoad {
  // Implement viewDidLoad if you need to do additional setup after loading the view.
  	[super viewDidLoad];
      
         ABAddressBookRef addressBook = ABAddressBookCreate(); // create address book reference object
      NSArray *abContactArray = (NSArray *)ABAddressBookCopyArrayOfAllPeople(addressBook); // get address book contact array
      
      
      
      NSInteger totalContacts =[abContactArray count];
      
      for(NSUInteger loop= 0 ; loop < totalContacts; loop++)
      {
          ABRecordRef record = (ABRecordRef)[abContactArray objectAtIndex:loop]; // get address book record
       //    NSLog(@\"%@,%@,%@\",recordIdString,firstNameString,lastNameString);
         
    
          
          if(ABRecordGetRecordType(record) ==  kABPersonType) // this check execute if it is person group
          {
              ABRecordID recordId = ABRecordGetRecordID(record); // get record id from address book record
              
               recordIdString = [NSString stringWithFormat:@\"%d\",recordId]; // get record id string from record id
              
               firstNameString = (NSString*)ABRecordCopyValue(record,kABPersonFirstNameProperty); // fetch contact first name from address book  
               lastNameString = (NSString*)ABRecordCopyValue(record,kABPersonLastNameProperty); // fetch contact last name from address book
             myArray2 = [NSArray arrayWithObjects:[NSString stringWithFormat:@\"%@\",firstNameString],nil];
             
            
          }
      }
  [B]  NSLog(@\"Out of loop %@\",[myArray2 objectAtIndex:0]); // Problem description below [/B]   
  }
  

  
  
  
  NSArray * myArray2 is declared in .h class
  
  
  Output is :
  
  
  2012-05-07 12:12:29.772 addressBook[1578:207] Abdullah
  2012-05-07 12:12:29.775 addressBook[1578:207] Hussain
  2012-05-07 12:12:29.882 addressBook[1578:207] Nasir
  2012-05-07 12:12:29.882 addressBook[1578:207] Ghulam
  2012-05-07 12:12:29.887 addressBook[1578:207] Wassey
  2012-05-07 12:12:29.888 addressBook[1578:207] Listhan
  2012-05-07 12:12:29.889 addressBook[1578:207] Mehmood
  2012-05-07 12:12:29.896 addressBook[1578:207] Ali
  
  2012-05-07 12:12:29.896 addressBook[1578:207] Out of Loop Ali
  
  I need the same output but it should be on different index's. like for Abdullah it should be on index 0, for Hussain on index 1, and so on.
  
  Problem Description:
  
  Here only one object is displayed and it should because at index 0 the last object is getting added after coming out of the loop, So. That is why want to add the objects on different index's.

  
  
  This line:
  
  
  

  myArray2 = [NSArray arrayWithObjects:[NSString stringWithFormat: @\"%@\",firstNameString],nil];
  

  
  
  Is not doing what you think. The method arrayWithObjects creates a new array that contains only the objects you provide in the call. If myArray2 contained an object before, it gets overwritten with the newly created object. By the time you get to your "outside the loop" statement, your array only contains 1 object.
  
  You should create a mutable array object before entering the loop, and then add each object to the array with the method addObject:

  Regards,
  
  Duncan C
  WareTo
  
  
  
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• obaidjawad Posts: 133Registered Users

  May 2012

  Duncan C;430255 said:

  This line:
  
  
  

  myArray2 = [NSArray arrayWithObjects:[NSString stringWithFormat: @\"%@\",firstNameString],nil];
  

  
  
  Is not doing what you think. The method arrayWithObjects creates a new array that contains only the objects you provide in the call. If myArray2 contained an object before, it gets overwritten with the newly created object. By the time you get to your "outside the loop" statement, your array only contains 1 object.
  
  You should create a mutable array object before entering the loop, and then add each object to the array with the method addObject:

  I solved this issue and you are correct. Could you please check this post http://www.iphonedevsdk.com/forum/iphone-sdk-development/103467-phone-numbers-retrieval-issue-xcode.html

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