Question

If we give same Identifier to all cells, Disappearing cell uses the memory of Appearing cell. Means content will repeat when I scroll Table-view. But If we give diff Identifier then every cell will have its own memory location and shows data perfectly.

Now suppose I have 1000 or more records to load in Table-view. If I will give different Identifiers, there will be lots of allocations in memory. So Is there any solution to show data perfectly with minimum memory allocation ?

Here is how I define cell identifier:

-(UITableViewCell *)tableView:(UITableView *)tableView 
        cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *cellIdentifier = [NSString stringWithFormat:@"%d%d",indexPath.section,indexPath.row];
    UITableViewCell *Cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];

    if (Cell == nil) 
    {
        Cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle 
                                      reuseIdentifier:cellIdentifier];
    }
}

Answer 1

you should clear the contents of dequeued cell like emptying labels and others. if you allocate separate memory for each cell you will easily go low memory. perfect memory management is still reusing cells.