edit control and delete button overlap separator line in UITableView - ios

Question

I wanna keep separator line in edit mode of UITableView but don't know how to.
When edit control and edit button active, their frames are overlap the separator line like this:
I change background color for odd and even cell
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
TableCell *cell = (TableCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[TableCell alloc] initWithStyle: UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...
cell.textLabel.backgroundColor = [UIColor clearColor];
cell.textLabel.text = [self.tableData objectAtIndex:indexPath.row];
if ((indexPath.row % 2) == 0) {
cell.contentView.backgroundColor = [UIColor grayColor];
cell.backgroundColor = [UIColor grayColor];
cell.selectedBackgroundView.backgroundColor = [UIColor grayColor];
}
cell.imageView.image = [UIImage imageNamed:#"noteCon"];
return cell;
}
And change background color for edit control and delete button in custom cell
- (void)willTransitionToState:(UITableViewCellStateMask)state{
[super willTransitionToState:state];
if (state == UITableViewCellStateShowingEditControlMask) {
[[self.subviews objectAtIndex:2] setBackgroundColor:self.contentView.backgroundColor];
}
if (state == 3) {
[[self.subviews objectAtIndex:3] setBackgroundColor:self.contentView.backgroundColor];
}
}
How to display separator line when tableView in edit mode? Thanks!