How to get data that's inside NSCFDictionary returned by SLRequest on OSX?

Question

I make this facebook request:

SLRequest *facebookRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook
                                                    requestMethod:SLRequestMethodGET
                                                              URL:[NSURL URLWithString:@"https://graph.facebook.com/fql"]
                                                       parameters:[NSDictionary dictionaryWithObject:@"SELECT uid, name, pic_square FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1 = me())" forKey:@"q"]];

[facebookRequest setAccount:_facebookAccount];

[facebookRequest performRequestWithHandler:^(NSData* responseData, NSHTTPURLResponse* urlResponse, NSError* error) {
     if(!error){
           id json = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil];
           NSLog(@"%@", [json class]); 
           //NSCFDictionary. How can i get the data that's inside this?
     }else{
           NSLog(@"error fb");
            }
     }];

Any thoughts on how to retrieve the data inside the NSCFDictionary? I've tried [json valueforKey...] but nothing

score 3 · Accepted Answer · edited May 23 '17 at 10:33

3

Use NSDictionary's -objectForKey: method:

id json = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil];
if ([json isKindOfClass:[NSDictionary class]]) {
    NSDictionary *dict = (NSDictionary*)json;
    for (NSString *key in dict) {
        id object = [dict objectForKey:key];
        NSLog(@"The object for key \"%@\" is: %@", key, object);
    }
}

Incidentally, it wouldn't take much to figure out that a NSCFDictionary can be treated like a NSDictionary. Here's one SO question that explains that: What is an NSCFDictionary? Once you know that, you can easily figure out how to deal with it by looking at the documentation for NSDictionary.

edited May 23 '17 at 10:33

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answered Nov 09 '12 at 01:14

Caleb

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thanks man! it does it's job. the weird thing is that `NSLog` logs only 1 time and it logs everything. i use this code to get the first 'uid', 'pic_square' and 'name' set of data `NSDictionary *dict = (NSDictionary*)[NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil]; for (NSString *key in dict) { id object = [dict objectForKey:key]; NSLog(@"The object for key is: %@", [object objectAtIndex:0]); }` – Pedro Vieira Nov 09 '12 at 01:24

How to get data that's inside NSCFDictionary returned by SLRequest on OSX?

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