iOS and JSON nesting issue - objective-c

Question

I am working on an app for a game server company and part of the app requires the user to see a list of his or her game servers and whether or not they are online, offline, how many players on them, the server name, etc. This data is all found in a JSON file hosted on the web updated from a MySQL database.
Using the code below, I can't seem to get it working. Now, please understand it is one of my first times working with JSON and have no choice as this is what the client requested. I talked to my partner but he couldn't seem to debug the issue himself.
The error I get is something like:
No visible #interface for 'NSArray' declares the selector 'objectForKey:'
I've tried several versions of the code, all with no success.
It would be much appreciated if you could please help me debug this code and get it working along with the commented out section near the bottom updating the TableViewCells with the server name, players online, and status (0=offline, 1=online, 2=busy, 3=suspended, -1=unable to start).
Please note that the format of the JSON file must remain as is and is only possible to make very minor changes.
Thank you,
Michael S.
My header file:
http://pastebin.com/EkuwVSmY
My main file:
http://pastebin.com/09Ju0uDu
My JSON file:
{
"status": "OK",
"error": "",
"debug": "2 server(s)",
"result": {
"servers": [
{
"id": 1,
"title": "Test",
"players": 0,
"slots": 10,
"status": 3
},
{
"id": 2,
"title": "Creative Spawn",
"players": 0,
"slots": 5,
"status": -1
}
]
}
}
The block that gives me the error is:
NSArray *serverResults = [[news objectForKey:#"result"] objectForKey:#"servers"];
if ([[[serverResults objectAtIndex:indexPath.row] objectForKey:#"status"] isEqual:#"1"]) {
serverPlayers.text = #"10000000";
}

Answer 1

The error you get points out that you are working on an NSArray instead of a NSDictionary. There is no method objectForKey defined on an NSArray. So what you could do is to debug your Webservice response and check the Data types.
Regarding at your output from JSON it should be like that:
NSDictionary (Keys: status, error, debug, result, servers)
servers is an NSArray which has NSDictionaries as elements.
To get the title of a server:
NSDictionary *resultDict = [news objectForKey:#"result"];
NSArray *servers = [resultDict objectForKey:#"servers"];
NSDictionary *firstServer = [servers objectAtIndex:0]; // I fetch here the first server
NSString *titleOfFirstServer = [firstServer objectForKey:#"title"];
NSNumber *statusOfFirstServer = [NSNumber numberWithInt:[[firstServer objectForKey:#"status"] intValue];
To iterate over all servers you should do it like that:
NSDictionary *resultDict = [news objectForKey:#"result"];
NSArray *servers = [resultDict objectForKey:#"servers"];
for(NSDictionary *server in servers) {
NSString *title = [server objectForKey:#"title"];
NSNumber *status = [NSNumber numberWithInt:[[server objectForKey:#"status"] intValue];
NSLog(#"%#%d", title, [status intValue]);
}