Custom UITableViewCell re-creating itself - objective-c

Question

Really need help. I've looked everywhere but still i cant find an answer. So, when i scroll my UITableView with custom cells in it its recreating cell each time I see it. As the result it lowers my performance significantly.
my method
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier = #"CellWithViewForProduct";
ProductCell *cell = (ProductCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
ProductDataStruct *dataStruct = [self.arrayData objectAtIndex:indexPath.row];
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"productCell" owner:nil options:nil];
for(id currentObject in topLevelObjects)
{
if([currentObject isKindOfClass:[ProductCell class]])
{
cell = (ProductCell *)currentObject;
break;
}
}
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.roundingIncrement = [NSNumber numberWithDouble:0.01];
formatter.numberStyle = NSNumberFormatterDecimalStyle;
NSString *price = [formatter stringFromNumber:[NSNumber numberWithFloat:(dataStruct.price.floatValue * [[[NSUserDefaults standardUserDefaults] objectForKey:#"CurrencyCoefficient"] floatValue])]];
NSString *priceString = [NSString stringWithFormat:#"%# %#", price, [[NSUserDefaults standardUserDefaults] objectForKey:#"Currency"]];
cell.productPrice.text = priceString;
cell.productDescription.text = [NSString stringWithFormat:#"%#", dataStruct.descriptionText];
cell.productTitle.text = [NSString stringWithFormat:#"%#", dataStruct.title];
if (dataStruct.hit.integerValue == 1)
{
[cell.productImage.layer addSublayer:[hitView layer]];
}
else
if (dataStruct.hit.integerValue == 2)
[cell.productImage.layer addSublayer:[newsItemView layer]];
if (!dataStruct.image)
{
if (self.tableView.dragging == NO && self.tableView.decelerating == NO && dataStruct.link)
{
[self startIconDownload:dataStruct forIndexPath:indexPath];
}
// if a download is deferred or in progress, return a placeholder image
//cell.productImage.image = [UIImage imageNamed:#"Placeholder.png"];
// if a download is deferred or in progress, return a loading screen
cell.productImage.alpha = 0;
[cell.productImageLoadingIndocator startAnimating];
}
else
{
if (self.didLoad)
{
cell.productImage.alpha = 0;
}
[cell.productImageLoadingIndocator stopAnimating];
cell.productImage.image = dataStruct.image;
[self imageAnimation: cell.productImage];
}
NSLog(#"WAZAAA");
return cell;
}

Answer 1

This entire chunk of code:
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"productCell" owner:nil options:nil];
for(id currentObject in topLevelObjects)
{
if([currentObject isKindOfClass:[ProductCell class]])
{
cell = (ProductCell *)currentObject;
break;
}
}
seems wrong to me. Above it,
ProductCell *cell = (ProductCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
should be sufficient to get you a cell to use.

Answer 2

first create a #property (nonatomic, assign) IBOutlet ProductCell *prodCell; in the .h
Then in the .m you just need this
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier = #"CellWithViewForProduct";
ProductCell *cell = (ProductCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
[[NSBundle mainBundle] loadNibNamed:#"productCell" owner:self options:nil];
cell = prodCell;
self.prodCell = nil;
NSLog(#"WAZAAA"); //Now it will only be called when a new cell is created.
}
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.roundingIncrement = [NSNumber numberWithDouble:0.01];
formatter.numberStyle = NSNumberFormatterDecimalStyle;
NSString *price = [formatter stringFromNumber:[NSNumber numberWithFloat:(dataStruct.price.floatValue * [[[NSUserDefaults standardUserDefaults] objectForKey:#"CurrencyCoefficient"] floatValue])]];
NSString *priceString = [NSString stringWithFormat:#"%# %#", price, [[NSUserDefaults standardUserDefaults] objectForKey:#"Currency"]];
cell.productPrice.text = priceString;
cell.productDescription.text = [NSString stringWithFormat:#"%#", dataStruct.descriptionText];
cell.productTitle.text = [NSString stringWithFormat:#"%#", dataStruct.title];
if (dataStruct.hit.integerValue == 1)
{
[cell.productImage.layer addSublayer:[hitView layer]];
}
else
if (dataStruct.hit.integerValue == 2)
[cell.productImage.layer addSublayer:[newsItemView layer]];
if (!dataStruct.image)
{
if (self.tableView.dragging == NO && self.tableView.decelerating == NO && dataStruct.link)
{
[self startIconDownload:dataStruct forIndexPath:indexPath];
}
// if a download is deferred or in progress, return a placeholder image
//cell.productImage.image = [UIImage imageNamed:#"Placeholder.png"];
// if a download is deferred or in progress, return a loading screen
cell.productImage.alpha = 0;
[cell.productImageLoadingIndocator startAnimating];
}
else
{
if (self.didLoad)
{
cell.productImage.alpha = 0;
}
[cell.productImageLoadingIndocator stopAnimating];
cell.productImage.image = dataStruct.image;
[self imageAnimation: cell.productImage];
}
NSLog(#"WAZAAA"); //Here doesn't make any sense, the cell is returned for being displayed, this doesn't mean it's being created.
return cell;
}