Initialise Following things as per steps mentioned.
1) Protocol declaration in <UISearchBarDelegate, UISearchControllerDelegate, UISearchResultsUpdating> in the .h interface class
2) Declare following properties
//Fetch result controller
@property (nonatomic, strong) UISearchController *searchController;
//for the results to be shown with two table delegates
@property (nonatomic, strong) CLCustomerResultrowsItemsCellController *searchResultsController;
//this custom controller is only suppose to have number of rows and cell for row function of table datasource
3) For state restoration
@property BOOL searchControllerWasActive;
@property BOOL searchControllerSearchFieldWasFirstResponder;
4) Initialise the code in this step in ViewDidload
_searchResultsController = [[CLChatContactsSearchResultController alloc] init];
_searchController = [[UISearchController alloc] initWithSearchResultsController:_searchResultsController];
self.searchController.searchResultsUpdater = self;
self.searchController.searchBar.placeholder = nil;
[self.searchController.searchBar sizeToFit];
self.contactsTableView.tableHeaderView = self.searchController.searchBar;
// we want to be the delegate for our filtered table so didSelectRowAtIndexPath is called for both tables
self.searchResultsController.tableView.delegate = self;
self.searchController.delegate = self;
self.searchController.dimsBackgroundDuringPresentation = YES; // default is YES
self.searchController.searchBar.delegate = self; // so we can monitor text changes + others
// Search is now just presenting a view controller. As such, normal view controller
// presentation semantics apply. Namely that presentation will walk up the view controller
// hierarchy until it finds the root view controller or one that defines a presentation context.
//
self.definesPresentationContext = YES; // know where you want UISearchController to be displayed
5) Use Button even to initiate the controller and past these functions for future usage if any see comments
#pragma mark - UISearchBarDelegate
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
[searchBar resignFirstResponder];
}
#pragma mark - UISearchControllerDelegate
// Called after the search controller's search bar has agreed to begin editing or when
// 'active' is set to YES.
// If you choose not to present the controller yourself or do not implement this method,
// a default presentation is performed on your behalf.
//
// Implement this method if the default presentation is not adequate for your purposes.
//
- (void)presentSearchController:(UISearchController *)searchController {
}
- (void)willPresentSearchController:(UISearchController *)searchController {
// do something before the search controller is presented
}
- (void)didPresentSearchController:(UISearchController *)searchController {
// do something after the search controller is presented
}
- (void)willDismissSearchController:(UISearchController *)searchController {
// do something before the search controller is dismissed
}
- (void)didDismissSearchController:(UISearchController *)searchController {
// do something after the search controller is dismissed
}
6) On searching in text you get this callback
#pragma mark - UISearchResultsUpdating
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController {
// update the filtered array based on the search text
NSString *searchText = searchController.searchBar.text;
id <NSFetchedResultsSectionInfo> sectionInfo = [_fetchedResultsController.sections objectAtIndex:0];
if (searchText == nil) {
// If empty the search results are the same as the original data
self.searchResults = [sectionInfo.objects mutableCopy];
} else {
NSMutableArray *searchResults = [[NSMutableArray alloc] init];
NSArray *allObjects = sectionInfo.objects;
for (PhoneNumber *phoneMO in allObjects) {
if ([phoneMO.number containsString:searchText] || [[phoneMO.closrr_id filteredId] containsString:searchText] || [[phoneMO.contact.fullname lowercaseString] containsString:[searchText lowercaseString]]) {
[searchResults addObject:phoneMO];
}
}
self.searchResults = searchResults;
}
// hand over the filtered results to our search results table
CLCustomerResultrowsItemsCellController *tableController = (CLCustomerResultrowsItemsCellController *)self.searchController.searchResultsController;
tableController.filteredContacts = self.searchResults;
[tableController.tableView reloadData];
}
7) You have to declare the filteredContacts property in the Custom class that will fill the searched items .
8) Thats it , in did select row compare the table view if its the main controller or custom controller class table view and do the operation for the selected item.
Hope this is helpful.
