Question

I have got an history page, which is a UItableview with 5 rows. I have set the prototype cell to the specs i want, and added this text to the corresponding historyviewcontroller.h file:

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
   return 5;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath           *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"HistoryItem"];
return cell;
} 

I am not seeing any cells when i run the app. I’ve clearly missed something, but i can’t quite see what.

Answer 1

You need to actually create the cells. dequeueReusableCellWithIdentifier only retrieves already created cells and does not create new ones.

Here’s how to do it:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath           *)indexPath
    static NSString *CellIdentifier = @"HistoryItem"; 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    //if cell is not nil, it means it was already created and correctly dequeued.
    if (cell == nil) {
        //create, via alloc init, your cell here
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }
    return cell;
}