Simple twitter program not working - objective-c

Question

I'm using this tutorial to practice creating an extremely basic twitter app: http://www.codeproject.com/Articles/312325/Making-a-simple-Twitter-app-using-iOS-5-Xcode-4-2#setting-up-the-table-view
The only difference in my app is I'm only using tableView ViewController. I can't seem to get this to work.
ViewController.h
#interface ViewController : UIViewController {
NSArray *tweets;
}
-(void)fetchTweets;
#property (retain, nonatomic) IBOutlet UITableView *tableView;
#end
ViewController.m
#import "ViewController.h"
#import "Twitter/Twitter.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize tableView = _tableView;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self fetchTweets];
}
- (void)fetchTweets
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSData* data = [NSData dataWithContentsOfURL:
[NSURL URLWithString: #"https://api.twitter.com/1/statuses/public_timeline.json"]];
NSError* error;
tweets = [NSJSONSerialization JSONObjectWithData:data
options:kNilOptions
error:&error];
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableView reloadData];
});
});
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return tweets.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"TweetCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSDictionary *tweet = [tweets objectAtIndex:indexPath.row];
NSString *text = [tweet objectForKey:#"text"];
NSString *name = [[tweet objectForKey:#"user"] objectForKey:#"name"];
cell.textLabel.text = text;
cell.detailTextLabel.text = [NSString stringWithFormat:#"by %#", name];
return cell;
}
- (void)viewDidUnload
{
_tableView = nil;
[self setTableView:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
} else {
return YES;
}
}
#end

Answer 1

you forgot to define delegate & datasource for your table, and didn't implement the protocols right as far as i see in your code,
try in your .h file:
#interface ViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>
{
// your implementation...
}
and in your .m file in viewDidLoad
self.tableView.dataSource = self;
self.tableView.delegate = self;
the numberOfRows, cellForRow, etc... methods wont work until you define your delegate & datasource for this table :)