NSTableView Data Source Not Working - objective-c

Question

I am trying to populate an NSTableView with an NSArray. I have a view controller, which I have set as my datasource, but every time I run the program, I get this error: Must implement numberOfRowsInTableView: and tableView:objectValueForTableColumn:row:, both of which I have implemented.
Here is my header:
#import <Cocoa/Cocoa.h>
#interface ChatViewController : NSViewController <NSTableViewDataSource>
- (NSInteger)numberOfRowsInTableView:(NSTableView *)aTableView;
- (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex;
#end
And here is my implementation file:
#import "ChatViewController.h"
#import "Socket.h"
#interface ChatViewController ()
#property (strong) IBOutlet NSTableView *people;
#property (strong) IBOutlet NSTextField *message;
#property (strong) IBOutlet NSButton *send;
#property (strong) Socket *sock;
#property (strong, nonatomic) NSString *recievedText;
#property (strong, nonatomic) NSArray *tableData;
- (void)updateUI;
#end
#implementation ChatViewController
#synthesize sock;
#synthesize recievedText;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
[self.people setDataSource:self];
sock = [[Socket alloc] init];
[sock connectToServerWithIP:#"127.0.0.1" andPort:5001];
[self updateUI];
}
return self;
}
- (void)updateUI
{
[sock sendMessage:#"getPeople"];
recievedText = [NSString stringWithString:[sock recieveMessage]];
self.tableData = [recievedText componentsSeparatedByString:#";"];
NSLog(#"%#", self.tableData);
[self.people reloadData];
NSLog(#"%#", self.people);
}
- (NSInteger)numberOfRowsInTableView:(NSTableView *)aTableView
{
return [self.tableData count];
}
- (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
{
return [self.tableData objectAtIndex:rowIndex];
}
#end
Socket is a class that I created for opening and closing sockets to a server, which is fully functional. The tableData array is populated like a normal array.
Thanks for any help.

Answer 1

at first make your table view delegate and data source of file's owner through xib.
- (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
{
if(aTableView == tableViewS)
{
if([[aTableColumn identifier] isEqualToString:#"first"])
{
return [self.tableData objectAtIndex:rowIndex];
}
}
return nil;
}
you need to give identifier name for table column
tableViewS is IBOutlet of table view.

Answer 2

First of you don't need to declare the methods in your .h file since they are part of the protocol your class is implementing. And also have you really set you data source? Have you done something like this some where?
self.tableView.dataSource = self;