Complex Json Data and NSMutableDictionary parsing issue - iphone

Question

Hi I'm using SBJson for moving Json data in and out of NSMutableDictionar, Im Building the main NSMutableDictionary from few others NSMutableDictionary like this
- (NSMutableDictionary *) getGeneral{
NSMutableDictionary *pType = [[NSMutableDictionary alloc]init];
[pType setObject:[NSNumber numberWithInteger:3] forKey:#"Ptype"];
NSMutableDictionary *session = [[NSMutableDictionary alloc]init];
[session setObject:[NSNumber numberWithInteger:-1] forKey:#"user_id"];
[session setObject:#"3" forKey:#"device_token"];
[session setObject:[NSNumber numberWithInteger:-1] forKey:#"customer_id"];
[session setObject:#"3" forKey:#"client_time"];
NSMutableDictionary *Error = [[NSMutableDictionary alloc]init];
[Error setObject:[NSNumber numberWithInteger:-1] forKey:#"error_code"];
[Error setObject:#"3" forKey:#"error_message"];
NSMutableDictionary *Successful = [[NSMutableDictionary alloc]init];
[Successful setObject:[NSNumber numberWithInteger:-1] forKey:#"success_code"];
[Successful setObject:#"3" forKey:#"success_message"];
NSMutableDictionary *Details = [[NSMutableDictionary alloc]init];
[Details setObject:#"3" forKey:#"user_name" ];
[Details setObject:#"3" forKey:#"user_password" ];
[Details setObject:[NSNumber numberWithInteger:-1] forKey:#"StartCallID"];
[Details setObject:#"3" forKey:#"StartDate" ];
[Details setObject:#"3" forKey:#"EndDate"];
NSMutableDictionary *General = [[NSMutableDictionary alloc]init];
[General setObject:pType forKey:#"Ptype"];
[General setObject:session forKey:#"Session"];
[General setObject:Error forKey:#"Error"];
[General setObject:Successful forKey:#"Successful"];
[General setObject:Details forKey:#"Details"];
return General;
}
and then i assign data into it i expected to get this Json structure:
{
"Ptype":[{"Ptype":-1}],
"Session":[{
"user_id":-1,
"device_token":" ",
"customer_id":-1,
"client_time":"",
}],
"Error":[{"error_code":-1,
"error_message":""}],
"Successful":[{"success_code":-1,
"success_message":""}],
"Details":[{
"user_name":" ",
"user_password":" ",
"StartCallID":-1,
"StartDate":" ",
"EndDate":" "
}]}
but there is no "]" or "[" in my json it looks like this, the order also change but this is not a problem, i take care of it on the server, issue is no square brackets
{"Session":
{"customer_id":-1,
"client_time":"3",
"user_id":-1,
"device_token":"3"},
"Error":{"error_code":-1,"error_message":"3"},
"Successful":{"success_code":-1,"success_message":"3"},
"Details":{"StartCallID":-1,
"user_password":"gg",
"user_name":"ff",
"StartDate":"3",
"EndDate":"3"},
"Ptype":{"Ptype":3}}
any one know on this issue, i need multiple items with the same name and this is the json standart for it
Thanks

Answer 1

Square brackets surrounds an array and you only have dictionaries.
The key is unique within each dictionary.
For example to put customer_id in a dictionary within an array:
NSArray *myArray = [NSArray arrayWithObjects:
[NSDictionary dictionaryWithObjectsAndKeys:
#"-1",
#"customer_id",
nil] nil];
Link of interest Understand JSON 3min lesson