UITableViewCell Separator Style doesn't change - iphone

Question

I am making something like facebook app's left panel search feature. I have two UITableViewControllers. I take a tableView from one of them and put it above another one, when user taps on UISearchBar to show search results. When I create this second UITableViewController, I tell, that it's separator style will be none in ViewDidLoad method:
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
And then, after I put it's tableView above the first UITableViewController's view, it is empty at first, since no data is yet entered to the UISearchBar. And there are no any separators. But then, when user enters any letter and table data has some records, the separator style returns to the default one (white lines).
So, for some reason, my second controller forgets, what should be the separator style and displays after the reload of table view separators again. What can be the reason?
Edit:
This is how I create my second UITableViewController and take it's tableView to put on the first controller's view:
- (UIView *)searchResultsView
{
if (! _searchResultsView) {
_searchResultsView = self.searchResultsViewController.tableView;
_searchResultsView.frame = CGRectMake(0, 44, 320, self.view.frame.size.height-44);
}
return _searchResultsView;
}
- (SearchResultsViewController *)searchResultsViewController
{
if (! _searchResultsViewController) {
_searchResultsViewController = [[SearchResultsViewController alloc] init];
_searchResultsViewController.searchBar = _searchBar;
}
return _searchResultsViewController;
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
[self.view addSubview:self.searchResultsView];
}
Screenshot:
This is how it looks, when there is no data for table view:
As you see, there are no separators.
This is how it looks, when there is data. I have deleted cell contents. As you see, there are white separators.

Answer 1

The problem was that I used UISearchController and it creates it's own tableView. So I had even 3 tableViews there. After I removed UISearchController and it's delegate methods, everything started working. Now I take a string from UISearchBar and transfer it to my second UITableViewController. UISearchController is not needed there.
- (BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
NSString *searchString = [_searchBar.text stringByReplacingCharactersInRange:range withString:text];
self.searchResultsViewController.searchString = searchString;
return YES;
}
And I use custom setter for searchString in second UITableViewController:
- (void)setSearchString:(NSString *)searchString
{
_searchString = searchString;
[self filterContentForSearchText:searchString];
[self.tableView reloadData];
}

Answer 2

Try with self.tableView.separatorColor = [UIColor clearColor];