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using JSON in cocoa

Answer 1

+3 A:

That's not valid JSON syntax; it's vaguely close but it's also very wrong. I'm not exactly sure what you're asking here, however.

Pointy 2010-03-06 20:52:05

I believe the questioner logged the parsed object, which would be a property list. It's valid property-list syntax.

Peter Hosey 2010-03-07 00:13:18

That makes sense to me; however the question is phrased as if that's the JSON itself.

Pointy 2010-03-07 00:59:03

Answer 2

+1 A:

Are you doing this?

NSArray *array = /*can has object from JSON kplzthx*/;
for (id obj in array) {
    NSLog(@"Current Object type: %@; object: %@", [obj class], obj);
}

The result of the parse is not an array, it's a dictionary, whose keys are @"completed_in", @"max_id", etc. Those keys are what you're getting in this loop: Looping on a dictionary yields its keys (not in any specific order).

Note that telling the compiler that the variable will hold a pointer to an NSArray does not mean it will; if the above resembles your code, then you are putting a pointer to an NSDictionary (which the JSON parser created and returned to you) into that variable. The compiler has no way to predict this; it can do nothing but believe what you tell it.

It's not clear exactly what you want. If you meant to loop on the array of result dictionaries, then ask the dictionary that the JSON parser returned to you for the object for the key @"results"; that object will be the array of dictionaries.

If you meant to simply get the top-level dictionary representing the complete parse of the JSON data: Congratulations; you have it. It's the object the JSON parser returned to you.

Or, in code:

NSDictionary *topLevelDictionary = /*object from JSON parser*/;
NSArray *resultDictionaries = [topLevelDictionary objectForKey:@"results"];

Peter Hosey 2010-03-07 00:19:38

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