Dynamic rows for each section

Question

How to calculate number of rows for each section and populate it's data. Below is the data.

 <__NSCFArray 0x7fadb3e73a60>(
    {
        AMID = "";
        AMName = "xyz";
        records =     (
                    {
                EId = 100;
                EMName = "abc";
                EName = "Ename1";
            }
        );
        EGroupId = 001;
        EGroupName = "SectionName1";
        stat = G;
    },

    {
        AMID = "";
        AMName = "zyx";
        records =     (
                    {
                EId = 144;
                EMName = "namename";
                EName = "somestring";
            },
                    {
                EId = 159;
                EMName = "somestring";
                EName = "somestring";
            },
                    {
                EId = 161;
                EMName = "somestring";
                EName = "somestring";
            }

    );
            EGroupId = 86;
            EGroupName = "SectionName2";
            stat = Y;
        }
)

From the above data, i want the "EGroupName" value in sections and dynamically count the numberofrowsinsection for each section(in this case, it's 'SectionName1 and SectionName2). Final output Should Be like,

**SectionName1**
    return 1;
**SectionName2**
    return 3;

really appreciate your help.

Edited

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

  NSString *selectedEngagementGroupId = engagementGroupDataArray[indexPath.section][@"EngagementGroupId"];
  NSString *selectedEngagementId = modelItem[@"EId"];
  NSLog(@"EGId %@",selectedEngagementGroupId);
  NSLog(@"EId %@",selectedEngagementId);

}

Answer 1

The array, once converted into objects will be an array of dictionaries, where each dictionary contains an array, and each contains a string value that can be used as a section name. That's a perfectly good datasource for a multi-section table view.

After parsing the JSON, you'll have an objective c collection, call it:

NSArray *parsedObject;

The number of sections is:

parsedObject.count;

The title of a section at an indexPath is:

parsedObject[indexPath.section][@"EGroupName"]

The number of rows in a section is:

NSArray *sectionArray = parsedObject[section][@"records"];
[sectionArray count]

The model item at a given indexPath is:

NSArray *sectionArray = parsedObject[indexPath.section][@"records"];
sectionArray[indexPath.row];

EDIT to go a little deeper, the section array itself is an array of dictionaries, so...

NSArray *sectionArray = parsedObject[indexPath.section][@"records"];
NSDictionary *modelItem = sectionArray[indexPath.row];

NSNumber *itemId = modelItem[@"EId"];
NSNumber *itemEMName = modelItem[@"EMName"];
NSNumber *itemName = modelItem[@"EName"];

// if the table cell is a just a vanilla UITableViewCell...
cell.textLabel.text = itemName;
cell.detailTextLabel.text = itemEMName;

EDIT AGAIN Remember, all of your datasource code must follow this pattern, so to get section level attributes from the data...

NSString *engagementGroupString = engagementGroupDataArray[section][@"EGroupName"];
NSString *engagementManagerString = engagementGroupDataArray[section][@"AMName"];

EDIT AGAIN, AGAIN You may find it tiresome to type all that stuff out to get the model item each time it's needed. If so, you can compress things by creating a helper function like:

- (NSDictionary *)modelItemForIndexPath:(NSIndexPath *):indexPath {
    NSArray *sectionArray = parsedObject[indexPath.section][@"records"];
    return sectionArray[indexPath.row];
}

Now, for example, when the user selects something:

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    NSString *selectedEngagementGroupId = engagementGroupDataArray[indexPath.section][@"EngagementGroupId"];
    NSDictionary *modelItem = [self modelItemForIndexPath:indexPath];
    NSString *selectedEngagementId = modelItem[@"EId"];
    NSLog(@"EGId %@",selectedEngagementGroupId);
    NSLog(@"EId %@",selectedEngagementId);
}