cellForRowAtIndexPath (iOS5 ver)

gistfile1.m

- (UITableViewCell*) tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
    static NSString* customCellIdentifier = @"CustomCellIdentifier";
    CustomCell* cell = (CustomCell *) [tableView dequeueReusableCellWithIdentifier:customCellIdentifier];

    if (cell == nil)// tableview not associated (registered) with nib file.
    {
        UINib* customCellNib = [UINib nibWithNibName:@"CustomCell" bundle:nil]; // Register this nib file with cell identifier.
        [tableView registerNib: customCellNib forCellReuseIdentifier:customCellIdentifier];
    }

    cell = (CustomCell*) [tableView dequeueReusableCellWithIdentifier:customCellIdentifier]; // call dequeueReusableCellWithIdentifier function and now you will get cell object
    return (UITableViewCell*)cell;
}

/*
Note:-

#1   Cell nib file must contain a single table view cell.
#2   Cell reuse identifier must be same as that in xib.
*/