Creating JSON with iOS 5 - issues - ios

Question

I'm trying to create a JSON object that looks like this:
{ "request_type":"send_string" "security_level":0 "device_type":"ios" "blob":{"string":"blah"}"}
Here's my attempt:
NSDictionary *blobData = [NSDictionary dictionaryWithObjectsAndKeys:
sendString,#"string",
nil];
NSString *blobString = [[NSString alloc]
initWithData:[NSJSONSerialization dataWithJSONObject:blobData options:kNilOptions error:&error]
encoding:NSUTF8StringEncoding];
NSLog(#"Blob Created: %#", blobString);
NSDictionary *requestData = [NSDictionary dictionaryWithObjectsAndKeys:
#"send_string",#"request_type",
0,#"security_level",
#"ios",#"device_type",
//No Email Provided, This is just for testing
blobString,#"blob",
nil];
NSData *JSONRequestData = NULL;
if ([NSJSONSerialization isValidJSONObject:requestData]) {
NSLog(#"Proper JSON Object");
JSONRequestData = [NSJSONSerialization dataWithJSONObject:requestData options:kNilOptions error:&error];
}
else {
NSLog(#"requestData was not a proper JSON object");
return FALSE;
}
NSLog(#"%#",[[error userInfo] objectForKey:#"NSDebugDescription"]);
NSLog(#"%#",[[NSString alloc] initWithData:JSONRequestData encoding:NSUTF8StringEncoding]);
The problem is, that last NSLog tells me all I've created is something like this:
{"request_type":"send_string"}
So when I go and try to write this to the server with
[NSJSONSerialization writeJSONObject:JSONRequestData toStream:outputStream options:0 error:&error];
I get this error from the console:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** +[NSJSONSerialization writeJSONObject:toStream:options:error:]: Invalid top-level type in JSON write'

Answer 1

Replace this line
0,#"security_level"
with
[NSNumber numberWithInt:0],#"security_level"