iOS: Creating structured NSArray in given format - ios

Question

hello all i am working on a project in which i have to create an array in this format:
{
"1": {
"Child_Gender": "",
"Child_DOB": "",
"Child_tobbacoUse": ""
},
"2": {
"Child_Gender": "",
"Child_DOB": "",
"Child_tobbacoUse": ""
},
but the array i create gives this format
(
{
"Child_DOB" = "";
"Child_Gender" = "";
"Child_tobbacoUse" = "";
},
{
"Child_DOB" = "";
"Child_Gender" = "";
"Child_tobbacoUse" = "";
}
)
i am using the following code:
for (int i = 0; i < arrayChildModel.count; i++)
{
ChildModel *model = [arrayChildModel objectAtIndex:i];
NSString *keyOrder = [NSString stringWithFormat:#"Children_Gender[%d]",i];
NSString *keyQuantity = [NSString stringWithFormat:#"Children_BirthDate[%d]",i];
NSString *keyTobacco = [NSString stringWithFormat:#"Children_HasTobaccoUsage[%d]",i];
//NSString *keyNotes = [NSString stringWithFormat:#"row[%d][description]",i];
childDateOfBirthStr = model.ChildBirthDate ;
childGenderStr = model.ChildGender ;
childTobaccoStr = model.ChildTobaccoUsage;
NSString *string1 = [NSString stringWithFormat:#"%#=%#&",keyOrder,childGenderStr];
NSString *string2 = [NSString stringWithFormat:#"%#=%#",keyQuantity,childDateOfBirthStr];
NSString *string3 = [NSString stringWithFormat:#"%#=%#",keyTobacco,childTobaccoStr];
[stringParams appendString:string1];
[stringParams appendString:string2];
[stringParams appendString:string3];
NSDictionary * ChildDict;
NSArray * ApplicantKeys = [[NSArray alloc]initWithObjects:#"Child_Gender",#"Child_DOB",#"Child_tobbacoUse", nil];
NSArray * ApplicantObjects = [[NSArray alloc]initWithObjects:childGenderStr,childDateOfBirthStr,childTobaccoStr, nil];
ChildDict = [NSDictionary dictionaryWithObjects:ApplicantObjects forKeys:ApplicantKeys];
NSLog(#"Dictionary is %#",ChildDict);
[CompleteArray addObject:ChildDict];
}
NSLog(#"Final Array is %#",CompleteArray);
please help me to convert the output array to the required formatted array

Answer 1

Create one dictionary outer for loop
NSMutableDictionary *dict =[[NSMutableDictionary alloc]init];
add this line before NSLog(#"Dictionary is %#",ChildDict);
[dict setObject:ChildDict forKey:[NSString stringWithFormat:#"%ld",i+1]];
[CompleteArray addObject:dict];

Answer 2

Please check following solution it will give you as expected output.
NSMutableDictionary *resultDic = [NSMutableDictionary new];
for (int i = 0; i < arrayChildModel.count; i++)
{
ChildModel *model = [arrayChildModel objectAtIndex:i];
NSString *keyOrder = [NSString stringWithFormat:#"Children_Gender[%d]",i];
NSString *keyQuantity = [NSString stringWithFormat:#"Children_BirthDate[%d]",i];
NSString *keyTobacco = [NSString stringWithFormat:#"Children_HasTobaccoUsage[%d]",i];
//NSString *keyNotes = [NSString stringWithFormat:#"row[%d][description]",i];
childDateOfBirthStr = model.ChildBirthDate ;
childGenderStr = model.ChildGender ;
childTobaccoStr = model.ChildTobaccoUsage;
NSString *string1 = [NSString stringWithFormat:#"%#=%#&",keyOrder,childGenderStr];
NSString *string2 = [NSString stringWithFormat:#"%#=%#",keyQuantity,childDateOfBirthStr];
NSString *string3 = [NSString stringWithFormat:#"%#=%#",keyTobacco,childTobaccoStr];
[stringParams appendString:string1];
[stringParams appendString:string2];
[stringParams appendString:string3];
NSDictionary * ChildDict = [NSDictionary dictionaryWithObjectsAndKeys:childGenderStr,#"Child_Gender",childDateOfBirthStr,#"Child_DOB",childTobaccoStr,#"Child_tobbacoUse", nil];
NSLog(#"Dictionary is %#",ChildDict);
NSString *resultDicKey = [NSString stringWithFormat:#"%d",i+1];
[resultDic setValue:ChildDict forKey:resultDicKey];
}
NSLog(#"Result dic %#",resultDic);