json parsing using NSJSONSerialization (inbuilt method in objective c)

make a request and get response data then ----

NSData *responseData  = [request responseData];

NSError * error;

    

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

    

   // NSLog(@"%@",json);

    

    NSArray * arrayTemp=[json valueForKey:@"categorylist"];

    for (int i = 0; i < [arrayTemp count]; i++)

    {

        NSMutableDictionary *dict =[[NSMutableDictionary alloc]initWithDictionary:[arrayTemp objectAtIndex:i]];

        [dict setObject:[NSNull null] forKey:@"categoryImage"];

        [arrMainCategory insertObject:dict atIndex:i];

    }

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);

To print function name and values for  a method in class:

nslog(@" %@",__FUNCTION__);