UITableViewCellAccessoryCheckmark removes as UITableView moves up? - uitableview

Question

I do check in didSelectRow Method, but as I move up the table, it removes the check
I think its creating new Cell
How can I use unique cell so that it would not replace the checked cell to unchecked.
- (void)tableAlert:(SBTableAlert *)tableAlert didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(#"MY INDEX PATH IS %#", indexPath);
NSString *email = [allEmails objectAtIndex:indexPath.row];
if (tableAlert.type == SBTableAlertTypeMultipleSelct) {
UITableViewCell *cell = [tableAlert.tableView cellForRowAtIndexPath:indexPath];
if (cell.accessoryType == UITableViewCellAccessoryNone){
[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
[selectedEmail addObject:email];
}
else{
[cell setAccessoryType:UITableViewCellAccessoryNone];
[selectedEmail removeObject:email];
}
[tableAlert.tableView deselectRowAtIndexPath:indexPath animated:YES];
}
NSLog(#"Final Array is %#", selectedEmail);
}
- (UITableViewCell *)tableAlert:(SBTableAlert *)tableAlert cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell;
// NSString *identifier = [NSString stringWithFormat:#"%d%d", indexPath.section, indexPath.row];
if (tableAlert.view.tag == 0 || tableAlert.view.tag == 1) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];
} else {
// Note: SBTableAlertCell
cell = [[SBTableAlertCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];
}
//[cell.textLabel setText:[NSString stringWithFormat:#"Cell %d", indexPath.section]];
NSString *email = [allEmails objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:#"%#", email];
UIFont *myFont = [ UIFont fontWithName: #"Arial" size: 14.0 ];
cell.textLabel.font = myFont;
return cell;
}

Answer 1

Since you are already storing the selected emails in selectedEmail array, you can make use of it in the cellForRowAtIndexPath method to display the checkmark:
NSString *email = [allEmails objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:#"%#", email];
if ([selectedEmail indexOfObject:email] != NSNotFound) {
[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
}
else {
[cell setAccessoryType:UITableViewCellAccessoryNone];
}
In this way, even if the cell is reused, there will not be any issue.