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POHow to access contents of NSDictionary from JSON data request
 

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  1. POHow to access contents of NSDictionary from JSON data request
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    <p>I'm trying to access the contents of a dictionary using the following code and can't get it to work for some reason.</p> <p>the <code>NSLog(@"self.userCommentsArray %@",self.userCommentsArray);</code> returns null</p> <p>thanks for any help with this.</p> <pre><code>NSData *jsonData = [NSData dataWithContentsOfURL:myURL]; NSDictionary *userCommentsDictionary = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&amp;error]; NSLog(@"userCommentsDictionary %@",userCommentsDictionary); // this works self.userCommentsArray = [[userCommentsDictionary objectForKey:@"from"] objectForKey:@"name"]; NSLog(@"self.userCommentsArray %@",self.userCommentsArray); </code></pre> <p>here's the nslog output for the dictionary:</p> <pre><code>userCommentsDictionary { data = ( { created = "2013-07-16T18:42:56+02:00"; from = { id = 27; name = "user-4"; }; id = 2553; message = "liquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum"; }, { created = "2013-07-16T18:42:56+02:00"; from = { id = 28; name = "user-5"; }; id = 2554; message = "x ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum"; }, { created = "2013-07-19T16:18:56+02:00"; from = { id = 24; name = "user-1"; }; id = 5125; message = test comment; }, { created = "2013-07-19T17:00:21+02:00"; from = { id = 24; name = "user-1"; }; id = 5126; message = "test comment "; } ); meta = { totalCount = 18; }; } </code></pre>
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    1. COJust have a look at your dictionary. The top-level key is "data", and its value is an *array* ... . Perhaps you can figure it out from there.
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    2. COYep, peel the onion, one layer at a time. Don't try to "short circuit" things with expressions like `[[userCommentsDictionary objectForKey:@"from"] objectForKey:@"name"]`, since it makes it impossible to debug the intermediate steps. (That expression is returning nil, without a doubt.)
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    3. COHint: There is no key "from" in userCommentsDictionary. The only two keys are "data" and "meta".
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