NSDictionary failed to read array in webservice - ios

Question

I'm newbie in developing Xcode 5 and unable to connect to SQLServer via php.
The php result is this:
{"user":[{"user_id":"2393", "id":"740049"}], "succeed":1}
This webservice created not by me but my team. I tried to track the process via NSLog and found the problem is NSDictionary i created unable to read this kind of format.
This is my NSDictionary
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:urlData option:NSJONReadingMutableContainers error:&error];
success=[json[#"success"] integerValue];
NSLog(#"Success:%ld", (long)success);
if my NSDictionary were able to read the data then the success should be 1 but it keep showing 0. I find the problem is that i cant parse that array in dictionary. Could anyone help me fix this thing?

Answer 1

You mistype the key value. it will be #"succeed". But you type #"success"
NSJSONSerialization *jsonData = [NSJSONSerialization JSONObjectWithData: urlData options:NSJSONReadingMutableContainers error:&error];
int success=[[(NSDictionary *)jsonData valueForKey:#"succeed"]integerValue];
NSLog(#"Success:%ld", (long)success);

Answer 2

Typo:
success=[json[#"succeed"] integerValue];
// ^^^^^^^

Answer 3

//returnString is {"user":[{"user_id":"2393", "id":"740049"}], "succeed":1};
NSDictionary *response = [returnString dataUsingEncoding:NSUTF8StringEncoding];
NSArray *users =[NSArray alloc]init];
if([[response valueForKey:#"succeed"] integerValue] == 1)
users = [response valueForKey:#"user"];
for(NSDictionary *user in users)
NSLog(#"User : %#", user);
Sample Output
User: [{user_id:2393,id:740049},{user_id:2394,id:740050}...,{user_id:2395,id:740051}];