iPhone: UITableView not Displaying New Data After Call to reloadData - iphone

Question

My problem is that the cell.textLabel does not display the new data following a reload. I can see the cellForRowAtIndexPath being called so I know the reloadData call goes thru. If I log the rowString I see the correct value so the string I set label text to is correct. What am I doing wrong?
I have following code :
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSUInteger row = [indexPath row];
static NSString *RowListCellIdentifier = #"RowListCellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:RowListCellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:RowListCellIdentifier]autorelease];
}
NSMutableString *rowString = [[NSMutableString alloc] init];
[rowString appendString:[[[rows objectAtIndex:row] firstNumber]stringValue]];
[rowString appendString:#" : "];
[rowString appendString:[[[rows objectAtIndex:row] secondNumber]stringValue]];
[rowString appendString:#" : "];
[[cell textLabel] setText:rowString];
[rowString release];
return cell;
}
- (void)viewWillAppear:(BOOL)animated {
[self.tableView reloadData];
[super viewWillAppear:animated];
}

Answer 1

try
cell.textLabel.text = $VALUE;
if it doesnt help, are you sure that you have set the tableView.delegate AND the tableView.dataSource?

Answer 2

Try:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.tableView reloadData];
}
What you have now is an unusual construction and might be preventing updates to the UI. In methods that set up a view, you want to call the superclass method before the subclass operations. You reverse the order in methods that tears down a view. You usually don't have to call the viewWillAppear of the super unless you have a custom superclass.

Answer 3

I bet your cell.textLabel is somehow being reset to nil. In my experience I find it easiest to treat the cellForRowAtIndexPath: method as if it's always creating a new cell. Even when it's reusing a cell I want to be ready for everything.
The Header file for cell.textLabel state that the default value is nil. This means that you want to assign a label to the textLabel before you go about changing it's text property.
To do that, replace:
[[cell textLabel] setText:rowString];
with:
UILabel *label = [[UILabel alloc] init];//or initWithFrame:
label.text = rowString;
/* Insert your own customization here */
label.font = [UIFont boldSystemFontOfSize:13.0];
label.backgroundColor = [UIColor clearColor];
label.adjustsFontSizeToFitWidth = YES;
cell.textLabel = label;
[label release];