iOS – Facebook SDK, parsing results - objective-c

Question

In my -request:didLoad: delegate method I'm NSLoging the results but I can't figure out what's the content?
It looks like result is an NSArray but what is inside it? how do I parse the data?
A sample of the log looks like this:
result: (
{
"fql_result_set" = (
{
uid2 = 1234567;
},
{
uid2 = 12345678;
}
);
name = queryID;
},
{
"fql_result_set" = (
{
"birthday_date" = "05/12/1987";
name = "John Doe";
},
{
"birthday_date" = "03/01/1978";
name = "Jane Doe";
}
);
name = queryBirthday;
}
)

Answer 1

The Facebook iOS tutorial, in "Step 6: Using the Graph API", says
Note that the server response will be in JSON string format. The SDK uses an open source JSON library https://github.com/stig/json-framework/ to parse the result. If a parsing error occurs, the SDK will callback request:didFailWithError: in your delegate.
A successful request will callback request:didLoad: in your delegate. The result passed to your delegate can be an NSArray, if there are multiple results, or an NSDictionary if there is only a single result.
In your example, everything printed by NSLog inside "()" is part of an NSArray, while everything inside "{}" (which also have keys incidentally) is part of an NSDictionary and therefore accessible by key (name).
http://developers.facebook.com/docs/mobile/ios/build/

Answer 2

According to https://developers.facebook.com/docs/reference/api/, all 'responses' are JSON-Objects. To parse these, iOS 5 provides a class called NSJSONSerialization (NSJSONSerialization Class Reference)
You normally parse it as follows:
NSDictionary *dictionaryJSON = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableLeaves error:&error];