IOS6 JSON.H import in main viewcontroller (Xcode5) - objective-c

Question

I am new to ios,so inorder to get accesstoken, i followed the link
http://technogerms.com/login-with-google-using-oauth-2-0-for-ios-xcode-objective-c/ .so in these link they used json.h files are they mandatory.if it is yes then explain me about json github in these link.

Answer 1

Here is the link what you want.
https://github.com/johnezang/JSONKit

Answer 2

Use native NSJSONSerialization class, you can find more info on below link,
iOS NSJSONSerialization
How to use NSJSONSerialization

Answer 3

There is no compulsory to use JSON.h in your project. Now You can use inbuilt apple JSON parser. IF you want to download JSon library then link is
Download JSon file from here
Otherwise you can use this Inbuilt apple JSON Parser by using following method.
NSDictionary *res = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableLeaves || NSJSONReadingMutableContainers error:&myError];
The full code is as below:
NSString *urlString=[NSString stringWithFormat:#"%#listcontact.php?uid=%#&page=0",LocalPath,appdel.strid]; //---- Add your URL for webservice-----
NSURL *url = [NSURL URLWithString:urlString];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
There are two NSURLConnection request methods AsynchronousRequest and SynchronousRequest.
(1) For AsynchronousRequest
[NSURLConnection sendAsynchronousRequest:urlRequest queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
NSError *error1;
NSDictionary *res=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&error1];
}];
(2) For SynchronousRequest
NSData *GETReply = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:nil error:nil];
NSError *myError = nil;
NSDictionary *res = [NSJSONSerialization JSONObjectWithData:GETReply options:NSJSONReadingMutableLeaves error:&myError];