How to handle too many custom UITableViewCells in UITableView?

Question

In my iphone app, I need to display many custom rows (maybe thousands or even more) in the UITableView. I add one custom UIView onto each UITableViewCell in "- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath" function, so there will be allocate much memory for the all my custom UIViews. When I add 500 rows into the UITableView, the memory ran out, then the app crashed. I think maybe there is something wrong with my code or design, I don't know how to handle this (thousands custom rows in UITableView). Please help me.... Thanks very much..
Below is the my code:(if I have thousands of rows, the following code will allocate thousands of CustomViews), is there any way that not allocate so many CustomViews?
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
**cell = [[[UITableViewCell alloc] initWithFrame:CGRectMake(0, 0, 110, 25) reuseIdentifier:CellIdentifier] autorelease] ;
// Set up the cell...
CustomView *cellView = [[CustomView alloc]initWithFrame:CGRectMake(1, 1, 108, 24)];
[cell addSubview: cellView];
[cellView release];
return cell;
}

Answer 1

Hi,
well you should add the customView if you need to create a new cell only. Any reused cell will contain this customview allready since you've added it when the cell was created.
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithFrame:CGRectMake(0, 0, 110, 25) reuseIdentifier:CellIdentifier] autorelease];
// Add customView to new cell's only
CustomView *cellView = [CustomView alloc] initWithFrame:CGRectMake(1, 1, 108, 24)];
[cell addSubview: cellView];
[cellView release];
// Set up the cell...
return cell;