search Display Controller is Deprecated in iOS8 - ios

Question

I am getting the above warning message when trying to run my code.
NSDictionary *tempDictionary = nil;
if (self.tableView == self.searchDisplayController.searchResultsTableView) {
tempDictionary = [filteredCompanyArray objectAtIndex:indexPath.row];
}
else {
tempDictionary= [self.client_list objectAtIndex:indexPath.row];
}
It's been deprecated and did a google search but all I saw were tutorials in Swift.
I followed Ray Wenderlich tutorial here http://www.raywenderlich.com/16873/how-to-add-search-into-a-table-view but now i'm stuck.
#pragma mark Content Filtering
-(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope {
// Update the filtered array based on the search text and scope.
// Remove all objects from the filtered search array
[self.filteredCompanyArray removeAllObjects];
// Filter the array using NSPredicate
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF.name contains[c] %#",searchText];
filteredCompanyArray = [NSMutableArray arrayWithArray:[self.client_list filteredArrayUsingPredicate:predicate]];
}
#pragma mark - UISearchDisplayController Delegate Methods
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
// Tells the table data source to reload when text changes
[self filterContentForSearchText:searchString scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption {
// Tells the table data source to reload when scope bar selection changes
[self filterContentForSearchText:self.searchDisplayController.searchBar.text scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}

Answer 1

The recipe below worked for me. I just successfully updated multiple scenarios of former iOS 7 code.
Thanks also to the inspiration of Updating to the iOS 8 Search Controller and Apple's API Reference
Remove UISearchDisplayDelegate protocol, add UISearchResultsUpdating and maybe UISearchControllerDelegate instead
#interface YOURTableviewController : UIViewController <UITableViewDelegate, UITableViewDataSource, /*UISearchDisplayDelegate, <- Removed*/ UISearchResultsUpdating /* Added */, UISearchControllerDelegate /* Added */>
{
Add new UISearchController as property:
// New property
#property (nonatomic, strong) UISearchController *searchController;
// ...
#implementation YOURTableviewController
#synthesize searchController; // New property
and initialize the new property in the didLoad method
- (void)viewDidLoad
{
// New code start -
self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
self.searchController.searchResultsUpdater = self;
self.searchController.delegate = self;
self.searchController.dimsBackgroundDuringPresentation = NO;
self.searchController.searchBar.delegate = self;
self.searchController.searchBar.barTintColor = [UIColor orangeColor];
[self.tableview setTableHeaderView:self.searchController.searchBar];
self.definesPresentationContext = YES;
// - New code end
// Previous code
//self.searchDisplayController.searchBar.barTintColor = [UIColor orange];
[super viewDidLoad];
}
Add new UISearchResultsUpdating methods, update UISearchBarDelegate methods, and maybe add helping extra method like below, and maybe also UISearchControllerDelegate methods
#pragma mark -
#pragma mark UISearchResultsUpdating
- (void)updateSearchResultsForSearchController:(UISearchController *)_searchController
{
NSString *searchString = _searchController.searchBar.text;
[self searchForText:searchString];
[self.tableview reloadData];
}
#pragma mark -
#pragma mark UISearchBarDelegate
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
[self updateSearchResultsForSearchController:self.searchController];
}
- (void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScope
{
[self updateSearchResultsForSearchController:self.searchController];
}
// Extra method
- (void)searchForText:(NSString *)searchString
{
/* Put here everything that is in the method:
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
...BUT WITH NO RETURN VALUE */
}
#pragma mark -
#pragma mark UISearchControllerDelegate
- (void)willPresentSearchController:(UISearchController *)searchController
{
//..
}
- (void)didPresentSearchController:(UISearchController *)searchController
{
//..
}
- (void)willDismissSearchController:(UISearchController *)searchController
{
//..
}
- (void)didDismissSearchController:(UISearchController *)searchController
{
//..
}
Replace and remove obsolete UISearchDisplayDelegate method(s)
#pragma mark -
#pragma mark UISearchDisplayDelegate
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{ ... }
Replace 'searchDisplayController' everywhere with 'searchController'
Make replacements
Code like:
if (tableView == self.searchDisplayController.searchResultsTableView)
can be replaced with
if (self.searchController.isActive)
Code like:
[self.searchDisplayController setActive:YES];
can be replaced with
[self.searchController setActive:YES];

Answer 2

Yes UISearchDisplay Controller is deprecated, you should use UISearchController instead
Create Search Controller First
#property (strong, nonatomic) UISearchController *searchController;
Initialise Search controller properties
self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
self.searchController.searchResultsUpdater = self;
self.searchController.dimsBackgroundDuringPresentation = NO;
Bind Search controller with your table view
self.tableView.tableHeaderView = self.searchController.searchBar;
Implement UISearchResultUpdating delegate
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController
{
NSString *searchString = searchController.searchBar.text;
[self searchForText:searchString
scope:searchController.searchBar.selectedScopeButtonIndex];
[self.tableView reloadData];
}
You Can also use your filter method to filter result
Your search logic will go here
-(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
More detail you can find
http://useyourloaf.com/blog/updating-to-the-ios-8-search-controller/

Answer 3

As UISearchDisplayController is deprecated, you need to use UISearchController for your purpose. Follow this link Using UISearchController
Another link that might be useful for you UISearchController Vs UISearchDisplayController