How to add string containing array in NSMutable Array?

Question

I have this json

{
    "title": "xyz",
    "category": "Monetary",
    "target": "55",
    "achieve": "0",
    "todolist": [
        {
            "todoitem": "one"
        },
        {
            "todoitem": "two"
        },
        {
            "todoitem": "three"
        }
    ]
}

coming from API and I want to add todolist array to

In .h file

@property (strong, nonatomic) NSMutableArray *todolist;
@property (strong, nonatomic) NSMutableArray *todolists;
@property (strong, nonatomic) NSMutableArray *listnumber;

In .m file

todolist=[[NSMutableArray alloc] initWithObjects: nil];
todolists=[[NSMutableArray alloc] initWithObjects: nil];
listnumber=[[NSMutableArray alloc] initWithObjects: nil];

In function getting json

    todolists = [result valueForKey:@"todolist"];
             for (int j =0; j < todolist.count; j++)
             {
                 [todolist addObject:[[todolists objectAtIndex:j] valueForKey:@"todoitem"]];
                 [listnumber addObject:[NSString stringWithFormat:@"%d", j]];
             }

             [tvToDoList reloadData];

CellForRowAtIndexPath I am adding values two field

            static NSString *CellIdentifier=@"Cell";
            TodolistTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
            if(cell==nil)
            {
                cell = [[TodolistTableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier ];
                cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
            }

            int row = (int)[indexPath row];

            cell.valListitem.text  = todolist[row];
            cell.lblNo.text = listnumber[row];


            return cell;
        }

where result is containing the whole json

What's the problem? What have you tried? Where is the error? — Yogesh Suthar
– Yogesh Suthar, Commented May 20, 2015 at 5:12
@VarunNaharia Assign listNumber as a NSArray. and You can then easily create mutable array from it. — Ashok Londhe
– Ashok Londhe, Commented May 20, 2015 at 5:19
there is no error but list dose not load in table view and I am not asking you to review my code — Varun Naharia
– Varun Naharia, Commented May 20, 2015 at 5:19

Pradip Vanparia · Accepted Answer · 2015-05-20 06:09:00Z

4

Try this in one line code.

todolist = [[[result valueForKey:@"todolist"] valueForKey:@"todoitem"] mutableCopy];

answered May 20, 2015 at 6:09

Pradip Vanparia

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3 Comments

Alina_cook Over a year ago

Good Logic. Good answer.

Varun Naharia Over a year ago

you didn't add addObject app is crash

Varun Naharia Over a year ago

but +1 for your mutableCopy

Pradip Vanparia · Accepted Answer · 2015-05-20 06:56:26Z

1

If you want to get string from array here is solution

for (int i =0; i < listnumber.count; i++) 
{
  [todolist addObject:[[listnumber objectAtIndex:i] valueForKey:@"todoitem"]];
}

edited May 20, 2015 at 6:56

Pradip Vanparia

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answered May 20, 2015 at 5:19

Prashant Tukadiya

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4 Comments

Varun Naharia Over a year ago

not working and there is some warning ` Ordered comparison between pointer and interger('int' and 'NSMutableArray *')` and its an infinity loop

Prashant Tukadiya Over a year ago

sorry i made some mistake there just update in for loop i < listnumber.count where i<listnumber

Varun Naharia Over a year ago

app crash by this [__NSCFDictionary length]: unrecognized selector sent to instance 0x7ff131ee8dc0

Prashant Tukadiya Over a year ago

make sure you get data in array format in listnumber just put debug point there and in for loop and let me know where it crashes

abhishekkharwar · Accepted Answer · 2015-05-20 05:44:52Z

0

Parse your json string and get the todos as NSArray from that.

@Try this

NSData* jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];

NSError *error = nil;
    id object = [NSJSONSerialization
                      JSONObjectWithData:data
                      options:0
                      error:&error];

   NSArray *todos = [object valueForKey:@"todolist"];

  NSMutableArray *mutableToDos = [[NSMutableArray alloc] initWithArray:todos];

Here is the code for display in cell

- (UITableViewCell *)tableView:(UITableView *)tableView 
         cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

   NSDictionary *todo = [mutableToDos objectAtIndex:indexPath.row];
   [[cell textLabel] setText:[todo valueForKey:@"todoitem"];

   return cell;
}

answered May 20, 2015 at 5:44

abhishekkharwar

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1 Comment

abhishekkharwar Over a year ago

did you check with debugger the array contains the value or not?

Manann Sseth · Accepted Answer · 2015-05-20 05:51:31Z

0

Try this

@property (strong, nonatomic) NSMutableArray *todolist;
todolist=[[NSMutableArray alloc] initWithObjects: nil];

//Convert to NSData
NSData* jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];

//JSON object
id object = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

//Array of ToDo List
NSArray *list = (NSArray *)[object valueForKey:@"todolist"];

//Fetch items of ToDo List
for (int i =0; i < [list count]; i++) 
{
  [todolist addObject:[[list objectAtIndex:i] valueForKey:@"todoitem"]];
}

NSLog(@"Array :: %@", todolist);

Hopefully, this will help you.
Thanks.

answered May 20, 2015 at 5:51

Manann Sseth

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1 Comment

abhishekkharwar Over a year ago

simply parse the json string and use it

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