ios Twitter API JSON parsing - ios

Question

I'm trying to parse the JSON string received by the Twitter API to get the user timeline.
I'm using Jastor to convert the JSON response to objective c objects.
Everything works fine until I try to parse the entities object
entities = {
hashtags =();
media = (
{
"display_url" = "pic.twitter.com/...";
"expanded_url" = "http://...";
id = ...;
"id_str" = ...;
indices =(
5,
25
);
"media_url" = "http://...";
"media_url_https" = "https://...";
sizes ={
large ={
h = 765;
resize = fit;
w = 1024;
};
medium ={
h = 448;
resize = fit;
w = 600;
};
small ={
h = 254;
resize = fit;
w = 340;
};
thumb ={
h = 150;
resize = crop;
w = 150;
};
};
type = photo;
url = "http://...";
}
);
urls =();
"user_mentions" = ();
};
Even if the JSON is not standard Jastor seems to parse all of it but this block due to the presence of "(" ")".
Do you know how to allow Jastor to parse this block as well? Or do I have to change library?
Thank you.

Answer 1

What's curious with the output of your question is that it is not a JSON formatted string. It looks like a nested combination of NSDictionary and NSArray objects which is typical when you convert a JSON string into Objective-C objects. When you NSLog this sort of object, the curly braces indicate NSDictionary objects and the parentheses indicate NSArray objects.
So, it just looks like you're displaying a typical, successfully parsed JSON object. You can decipher it as follows, assuming that the above output was generated by doing a NSLog of some NSDictionary called, say, jsonObject:
NSDictionary *entity = [jsonObject objectForKey:#"entities"];
NSArray *media = [entity objectForKey:#"media"];
NSDictionary *media0 = [media objectAtIndex:0];
NSString *display_url = [media0 objectForKey:#"display_url"];
NSArray *sizes = [media0 objectForKey:#"sizes"];
NSDictionary *size0 = [sizes objectAtIndex:0];
or, if using modern Objective C, simply:
NSDictionary *entity = jsonObject[#"entities"];
NSArray *media = entity[#"media"];
NSDictionary *media0 = media[0];
NSString *display_url = media0[#"display_url"];
NSArray *sizes = media0[#"sizes"];
NSDictionary *size0 = sizes[0];
etc.

Answer 2

Why not using the new feature in iOS 5.0 NSJSONSerialization, it converts JSON data to Objective C standarts like NSArray or NSDictionary.
NSString *stringURL = [NSString stringWithFormat:#"%#?%#", kTwitterApi, kParams];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:stringURL]];
request.HTTPMethod = #"GET";
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
NSLog(#"Error%#", error.localizedDescription);
}else {
NSError *err;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&err];
NSLog(#"%#", json);
}
}];