IOS Loading data into a table from a web service - json

Question

I'm very new to this, so pardon my ignorance.
I have the following method that I've pieced together and I get no errors when it's running, and I verified that I'm getting data from the web service. What I do notice is that when I put a breakpoint on the numberOfRowsInSection method it returns 0 both times. I assume that means I'm not loading my array correctly.
Declare my messages property in the header
#property (nonatomic, strong) NSArray *messages;
Synthesize that property in the m file
#synthesize messages;
This is the method that loads the data and is supposed to reload the table
- (void)request:(RKRequest*)request didLoadResponse:(RKResponse*)response
{
if ([response isOK])
{
// Success! Let's take a look at the data
NSDictionary *result = [NSJSONSerialization JSONObjectWithData: [[response bodyAsString] dataUsingEncoding:NSUTF8StringEncoding] options: NSJSONReadingMutableContainers error:nil];
if([[result objectForKey:#"result"] isEqualToString:#"success"])
{
NSArray *message_array = [result objectForKey:#"messages"];
for(NSUInteger i = 0; i < [message_array count]; i++)
{
EHRXMessage *m = [[EHRXMessage alloc] init];
NSDictionary *message = [message_array objectAtIndex: i];
m.subject = [message objectForKey:#"Title"];
m.callback_name = [message objectForKey:#"CallbackName"];
[self.messages setValue:m forKey:[NSNumber numberWithInt:i]];
}
[self.tableView reloadData];
}
else
{
UIAlertView* alert = [[UIAlertView alloc] initWithTitle:#"Inbox Error!"
message:#"Error loading messages"
delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
}
}
}
And here is the method where I tell it how to load the cells
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"MessageCell"];
EHRXMessage *message = [self.messages objectAtIndex:indexPath.row];
cell.textLabel.text = message.callback_name;
cell.detailTextLabel.text = message.subject;
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.messages count];
}
And here's a snippet of what the json looks like
{"result":"success","count":"0", "messages":[{"SenderID":"6fcb7c19-b21f-4640-a237-0e7ac5ca0ce8","Title":"General","Message":"","CallbackName":"Claudia","CallbackNumber":"1295","EncounterID":null,"AdmissionID":"d7387243-3e8a-42e4-8a85-fdd3428dae68","DateSent":"3/9/2012 12:52 PM"}]}

Answer 1

- (void)viewDidLoad
{
[super viewDidLoad];
self.loaded = FALSE;
NSURL *URL = [NSURL URLWithString:#"http://46.136.168.166:8000/test.php"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
// creating loading indicator
self.HUD = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
if(connection){
self.recievedData = [NSMutableData data];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if(!cell)
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
NSDictionary *item = [self.dataBase objectAtIndex:[indexPath section]];
NSArray *item_d = [item allKeys];
[[cell textLabel] setText:[item objectForKey:[item_d objectAtIndex:[indexPath row]]]];
return cell;
}
- (void)fetchedData:(NSMutableData *)responseData
{
NSError *error;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableContainers error:&error];
[self setDataBase:[json objectForKey:#"json-data-header"]];
[self.table reloadData];
}

Answer 2

Do you have numberOfRowsInSection?
EDIT
Be sure to initialize the data source (self.messages)