NSJSONSerialization doesn't parse this JSON

Question

I'm trying to parse this JSON that looks to me like well written, but NSJSONSerialization doesn't think the same AFAIK since it's returning an NSArray.

This is my code:

NSData* gamesData = [NSData dataWithContentsOfURL:
                        [NSURL URLWithString:@"http://s42sport.com/polarice/json/games.json"]
                        ];

    NSDictionary* json = nil;
    if (gamesData) {
        json = [NSJSONSerialization
                JSONObjectWithData:gamesData
                options:kNilOptions
                error:nil];
        NSLog(@"%d",json.count);
    }

The questions are,

What's wrong with the JSON? Why NSSerialization doesn't return me the NSDictionary?

Edit: Yes, I just learned about the [...] vs {...}. Thank You.

That JSON is an array. There is nothing wrong except for your expectation that it is a dictionary. — rmaddy, Oct 18 '13 at 06:25
looks like you didn't put in much effort in looking at even basic JSON syntax. — hawk, Oct 18 '13 at 06:46
@JitendraDeore my comment was directed at the original poster. — hawk, Oct 18 '13 at 07:03
the referenced file no longer exist, next time put the actual json text instead — LolaRun, Jan 09 '15 at 10:11

score 2 · Accepted Answer · answered Oct 18 '13 at 06:38

2

Parse your json by this way.

NSURL * url=[NSURL URLWithString:@"http://s42sport.com/polarice/json/games.json"];

NSData * data=[NSData dataWithContentsOfURL:url];

NSError * error;

NSMutableDictionary * json=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&error];

NSLog(@"%@",json);

NSArray * array1=[json valueForKey:@"c"];

NSLog(@"%@",array1);

Try this code. this will surely work for you.

answered Oct 18 '13 at 06:38

Jitendra

5,055
2
22
42

Yep, that worked, because of options:NSJSONReadingMutableLeaves? – Arif De Sousa Oct 18 '13 at 06:55
Can I ask, what's the difference in the code? You make it return a NSmutableDictionary now. I thought it would return a NSMutableArray – Arif De Sousa Oct 18 '13 at 07:16
no problem whatever you want you can get NSMutableArray depend upon requirement. – Jitendra Oct 18 '13 at 07:32

score 1 · Answer 2 · answered Oct 18 '13 at 06:26

NSDictionnary should be used for Object whereas NSArray is use for JSON array

NSArray* json = nil;
if (gamesData) {
    json = [NSJSONSerialization
            JSONObjectWithData:gamesData
            options:kNilOptions
            error:nil];
    NSLog(@"%d",json.count);
}

score 0 · Answer 3 · answered Oct 18 '13 at 06:25

0

The JSON file you listed is an array (it starts and ends with a square bracket) so Objective-C reflects that with an NSArray root object.

answered Oct 18 '13 at 06:25

Chris McGrath

1,936
16
17

NSJSONSerialization doesn't parse this JSON

3 Answers3