UISearchController results are not being filtered - objective-c

Question

So I am using the UISearchController in my project, and it seems to work all fine but whatever I type on the Search Bar no I get no results. So I believe the problem is on my
(void)updateSearchResultsForSearchController:(UISearchController *)searchController {
}. To be honest, I don't really know what code to put in that method. Here is the rest of the code:
#property (nonatomic, strong) UISearchController *searchController;
#property (nonatomic, strong) SearchResultsTableViewController *resultsTableController;
#property (nonatomic, strong) NSMutableArray *searchResults; // Filtered search results
// for state restoration
#property BOOL searchControllerWasActive;
#property BOOL searchControllerSearchFieldWasFirstResponder;
_resultsTableController = [[SearchResultsTableViewController alloc] init];
_searchController = [[UISearchController alloc] initWithSearchResultsController:self.resultsTableController];
self.searchController.searchResultsUpdater = self;
[self.searchController.searchBar sizeToFit];
self.tableView.tableHeaderView = self.searchController.searchBar;
self.searchController.delegate = self;
self.searchController.dimsBackgroundDuringPresentation = NO;
self.searchController.searchBar.delegate = self;
self.searchController.searchBar.tintColor = [UIColor darkGrayColor];
self.definesPresentationContext = YES;
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
// restore the searchController's active state
if (self.searchControllerWasActive) {
self.searchController.active = self.searchControllerWasActive;
_searchControllerWasActive = NO;
if (self.searchControllerSearchFieldWasFirstResponder) {
[self.searchController.searchBar becomeFirstResponder];
_searchControllerSearchFieldWasFirstResponder = NO;
}
}}
#pragma mark - UISearchBarDelegate
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
[searchBar resignFirstResponder];}
#pragma mark - UISearchResultsUpdating
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController {
}

Answer 1

You'll need to take the NSArray that your table view data comes from, filter it as per your search criteria, and then reload the table view. Your code might look something like this:
- (void) doSearch:(NSString *)searchText {
[self.filteredClients removeAllObjects];
if ( [searchText length] == 0 ) {
[self.filteredClients addObjectsFromArray:self.users];
} else {
for (User *user in self.users) {
NSString *name = [user fullName];
NSRange range = [[name lowercaseString] rangeOfString:[searchText lowercaseString]];
if ( range.location != NSNotFound )
[self.filteredClients addObject:user];
}
}
[self.tableView reloadData];
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
if ( [searchText length] > 0 )
{
[self showCancelButton:YES];
}
else {
[self showCancelButton:NO];
[searchBar resignFirstResponder];
}
[self doSearch:searchText];
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
[self showCancelButton:YES];
}
- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar
{
if ( [searchBar.text length] > 0 ) [self showCancelButton:YES];
else [self showCancelButton:NO];
[self doSearch:_searchBar.text];
}