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Adding 2 keyvalues to list from JSON object

I want to append 2 key values from JSON object to my list in开发者_开发百科 iPhone app. Below is my code for that,

SBJsonParser *jsonParser = [[[SBJsonParser alloc] init] autorelease];
    NSString *jsonString=[[NSString alloc] initWithContentsOfURL:[NSURL URLWithString:@"http://test/json/json_data.php"]];

    id response = [jsonParser objectWithString:jsonString error:NULL];

    NSDictionary *feed = (NSDictionary *)response;
    list = (NSArray *)[feed valueForKey:@"fname"];

the above code properly displays the value from fname but what do i do if i want to add lname to it. for eg, my object is [{"fname":"Bill","lname":"Jones"},{"fname":"John","lname":"Jacobs"}] i want to display names as Bill Jones, John Jacobs and so on in the list. Currently it only displays Bill, John..I tried doing something like @"fname"@lname but it wont work..Can anybody please help me..


An observation: the response from the JSON parser is not a dictionary, but an array given the string you pass in. Your code works because -valueForKey: is something an array will respond to. The array sends -valueforKey: to each element and builds an array out of the responses.

There are two ways you can do what you want (at least)

  1. Iterate through the array explicitly

    NSMutableArray* list = [[NSMutableArray alloc] init];
    for (id anObject in response)
    {
        [list addObject: [NSString stringWithFormat: @"%@ %@", 
                                                     [anObject objectForKey: @"fName"], 
                                                     [anObject objectForKey: @"lname"]]];
    }
    
  2. Add a category to NSDictionary

    @interface NSDictionary(FullName)
    -(NSString*) fullName;
    @end
    
    @implementation NSDictionary(FullName)
    
    -(NSString*) fullName
    {
        return [NSString stringWithFormat: @"%@ %@", 
                                           [self objectForKey: @"fName"], 
                                           [self objectForKey: @"lname"]];
    }
    
    @end
    

    Then your existing code changes to

    list = (NSArray *)[feed valueForKey:@"fullName"];
    
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