NSMutable array removeAllObject removing objects in other NSMutable array too

Question

I have three class namely DepartmentViewController, DepartmentRequest, Department. Its like im making a department request from DepartmentViewcontroller and based on response im manipulating repsonse and adding in NSmutableArray *responseArray in DepartmentRequest class. This array just contains Department object. I want this responseArray in DepartmentViewController for searching and reloading tableview. so i passed this array to DepartmentViewController through delegate and assigning responseArray to localArray. Now I did searching based on these two array but if i remove any one of the array using removeallobject. Its removing object in other Array too.

if(searchString.length>0)
  {

      [localArray removeAllObjects];
    for (int i =0 ; i < [departmentRequest.responseArray count]; i++) {
      Department *dept = [departmentRequest.responseArray objectAtIndex:i];

        if (([dept.departmentName rangeOfString:searchString options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch)].location != NSNotFound)
          )

        {
                   [localArray addObject:dept];
        }
        else{
            NSLog(@"deptname %@",dept.departmentName);
        }

    }

    [departmentTableView reloadData];

if i remove object in localArray its removing objects both in departmentReqeust.responseArray and localArray

are you directly assigning using localArray = responseArray ? — Abhishek
– Abhishek, Commented Jan 3, 2014 at 5:18
It sounds like you think you have two arrays and there is actually only one. You are likely passing a reference, not a clone. The code you have supplied is not enough to determine if that is the case or not. — prototypical
– prototypical, Commented Jan 3, 2014 at 5:20

Abhishek · Accepted Answer · 2014-01-03 05:19:45Z

5

You should assign like

localArray = [NSArray arrayWithArray:responseArray];

answered Jan 3, 2014 at 5:19

Abhishek

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2 Comments

venky Over a year ago

localArray is also MutableArray, so I changed to [NSMutableArray arrayWithArray:responseArray]. thank you

Nathan Day Over a year ago

or localArray = [responseArray mutableCopy]

Ravindra Singh · Accepted Answer · 2014-01-03 11:43:36Z

0

if(searchString.length>0) {

 // [localArray removeAllObjects];

 NSMutableArray arrTemp=[[NSMutableArray alloc]init];

for (int i =0 ; i < [departmentRequest.responseArray count]; i++) {
  Department *dept = [departmentRequest.responseArray objectAtIndex:i];

    if (([dept.departmentName rangeOfString:searchString options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch)].location != NSNotFound)
      )

    {
               [arrTemp addObject:dept];
    }
    else{
        NSLog(@"deptname %@",dept.departmentName);
    }

}
localArray = [NSArray arrayWithArray:arrTemp];

[departmentTableView reloadData];

answered Jan 3, 2014 at 11:43

Ravindra Singh

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