How to pass Json structure to Webservice using NSDictionary - objective-c

Question

I need to pass a JsonObject to a webservice and for now I find out I should use an NSDictionary, what I tried is this:
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"myurl"]];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
NSDictionary *tmp = [[NSDictionary alloc] initWithObjectsAndKeys:
#"a#aaa.com", #"Email",
#"123", #"Phone",
#"123", #"Mobile",
#"a", #"Name",
#"a", #"Surname",
#"a", #"AddressType",
#"a", #"Address",
#"1", #"StreetNumber",
#"A", #"InternalStreetNumber",
#"3", #"ZIPCode",
#"a", #"City",
#"a", #"ProvinceCode",
nil];
NSError *error;
NSData *postData = [NSJSONSerialization dataWithJSONObject:tmp options:0 error:&error];
[request setHTTPBody:postData];
// Create the NSURLConnection
[NSURLConnection connectionWithRequest:request delegate:self];
But it doesn't work and the Webservice doesn't return anything, the problem is that my structure should look like this:
userData:{
Email: "a#aaa.com",
Phone: "123",
Mobile: "123",
Name: "name",
Surname : "surname",
AddressType: "a",
Address: "a",
StreetNumber: "12",
InternalStreetNumber: "B",
ZIPCode: "123",
City: "a",
ProvinceCode: "a"
}
And I can't understand how to recreate a structure like this. Do I need to use NSDictionary? How can I possibly fix the problem?

Answer 1

You can try this
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
[request setTimeoutInterval:Request_TimeOut_Time];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
// Set post body
if (postDict) //you dictionary
[request setHTTPBody:[[postDict JSONRepresentation] dataUsingEncoding:NSUTF8StringEncoding]];

Answer 2

To send NSDictionary as a json object, you need to create proper structure of dictionary.
First convert into NSData. After that convert into NSString and post as json object.
In your Example :
Create a dictionary:
NSDictionary *tmp;
Then:
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:tmp options:NSJSONWritingPrettyPrinted error:&error];
After converting into NSData, you need to convert it into NSString.
NSString *jsonString = [[NSString alloc] initWithData:jsonDataencoding:NSUTF8StringEncoding];
And this jsonString can be send as json object in a webservice.