How do I extract a value from the following code? - iphone

Question

How do I extract just the "token" value from the following code? I'm looking to save this value into a string.
Is meta an array? If so how would I extract the data from the "token" value?
thanks for any help
NSString *responseData = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
Response ==> {"meta":[],"data":{"token":"IVZ2ciRkbVtDLUl3YmhwOTkyXzpRR1M3LUUsRiElfWF6T3I6dCxsRWg6di1XcyR6OTUzZHhVazdLTEJ7blU5O258d2xRTXg0VUxwQXBlNHRSOXd2VXZ1aG1RfFhQQjJsSkkoc2IuOTFyYkYodyhAe2RldXR1aDF3RClXWyhoMiU="}}
2013-07-19 15:10:23.139 appName [11190:907] {
data = {
token = "IVZ2ciRkbVtDLUl3YmhwOTkyXzpRR1M3LUUsRiElfWF6T3I6dCxsRWg6di1XcyR6OTUzZHhVazdLTEJ7blU5O258d2xRTXg0VUxwQXBlNHRSOXd2VXZ1aG1RfFhQQjJsSkkoc2IuOTFyYkYodyhAe2RldXR1aDF3RClXWyhoMiU=";
};
meta = (
);
}

Answer 1

I believe the data is in JSON format. In that case, this should work.
NSError *error = nil;
NSDictionary *responseDict = [NSJSONSerialization JSONObjectWithData:urlData options:0 error:&error];
NSString *token = [[responseDict objectForKey:#"data"] objectForKey:#"token"];

Answer 2

I'd just do this:
NSData *responseData = [NSData dataWithContentsOfURL:yourURL];
NSString *token = [NSJSONSerialization JSONObjectWithData:responseData
options:kNilOptions error:NULL][#"data"][#"token"];
It will be nil if there's any error.

Answer 3

In your Case, meta is an Array and data is a Dictionary. If your Response is properly formatted in JSON then you can use the below sample code to get the TokenString and metaArray.
Sample Code :
NSData *data = [NSData dataWithContentsOfURL:yourURL];
NSError* error = nil;
NSDictionary* responseDict = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSString *token = [[responseDict objectForKey:#"data"] objectForKey:#"token"];
NSArray *meta = [responseDict objectForKey:#"meta"];
NSLog(#"\ntoken :: %#\nmeta :: %#",token,meta);
PS : To know more about JSON response , take a look at this Answer.