Question

I added several cells to a tableview and each cell has a textField in the right to let users input texts. I find that when I scroll down and go back, the input of the first few lines will disappear. Does anybody know what’s the problem?

The following is a piece of my codes:

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath
    *)indexPath
        {
            //init cell
            static NSString *TableIdentifier = @"MyIdentifier";
            UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:TableIdentifier];
            if(cell == nil) {
                cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero 
                                        reuseIdentifier:TableIdentifier] autorelease];
            }

            //set cell for each row
            if([indexPath row] == 0)
            {
                cell.textLabel.text = @"Row A";
                txt_A = [self CreateTextField];         //create textField
                [cell.contentView addSubview:txt_A];        //add textField to cell
            }
            else if([indexPath row] == 1)
            {
                cell.textLabel.text = @"Row B";
                    txt_B = [self CreateTextField];
                    [cell.contentView addSubview:txt_B];
            }
            else{...} }

Answer 1

You mean the user input will disappear? If so this is probably because cellForRowAtIndexPath: reuses the cell and will execute the [self CreateTextField] again.

So, unless you store the user input before the cell disappears, your cells will be redrawn empty and reinitialized empty.

If you do store the user input, you could reinitialize the cell with the right user input.