How should I use searchController - ios

Question

How should I use search controller instead of searchDisplayController in tableView method
I have an example code here
if (tableView == self.searchDisplayController.searchResultsTableView)
Hhere I am getting error on this line it says searchDisplayController is deprecated.
#implementation LocationsViewController
{
NSArray *_park;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.searchResult = [NSMutableArray arrayWithCapacity:[self->_park count]];
// Create a new JSONLoader with a local file URL
JSONLoader *jsonLoader = [[JSONLoader alloc] init];
NSURL *url = [[NSBundle mainBundle] URLForResource:#"park" withExtension:#"json"];
// Load the data on a background queue...
// As we are using a local file it's not really necessary, but if we were connecting to an online URL then we'd need it
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
_park = [jsonLoader locationsFromJSONFile:url];
// Now that we have the data, reload the table data on the main UI thread
[self.tableView performSelectorOnMainThread:#selector(reloadData) withObject:nil waitUntilDone:YES];
});
}
//Just before showing the LocationDetailViewController, set the selected Location object
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
LocationDetailViewController *vc = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
vc.location = [_park objectAtIndex:indexPath.row];
}
#pragma mark - Table View Controller Methods
//UISearchController *searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"LocationCell"];
Location *location = [_park objectAtIndex:indexPath.row];
cell.textLabel.text = location.name;
cell.detailTextLabel.text = location.address;
// cell.detailTextLabel.text = location.ide;
cell.imageView.image = [UIImage imageNamed:#"location_image"];
///////////////////
if (tableView == self.searchDisplayController.searchResultsTableView)
{
cell.textLabel.text = [self.searchResult objectAtIndex:indexPath.row];
}
else
{
cell.textLabel.text = self->_park[indexPath.row];
}
/////////////////
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
//////////////////////////////////////////////
if (tableView == self.searchDisplayController.searchResultsTableView)
{
return [self.searchResult count];
}
else
{
return [self->_park count];
}
//////////////////////////////////////////////
return [_park count];
}
/////////////////////////////////////////////////
- (void)filterContentForSearchText:(NSString*)searchText scope: (NSString*)scope
{
[self.searchResult removeAllObjects];
NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:#"SELF contains[c] %#", searchText];
self.searchResult = [NSMutableArray arrayWithArray: [self->_park filteredArrayUsingPredicate:resultPredicate]];
}
-(BOOL)searchDisplayController:(UISearchController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString scope: [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
return YES;
}
#end

Answer 1

I believe you have declared a UISearchController by passing nil as a parameter to searchResultsController. So your same tableView is being used as searchResultsController of UISearchController
like
let searchController = UISearchController(searchResultsController: nil)
or
UISearchController searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
I hope all you want to do now is to distinguish whether UISeacrhController is active or it's your tableView so that you can show different cell for them :)
If so,
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"LocationCell"];
Location *location = [_park objectAtIndex:indexPath.row];
cell.textLabel.text = location.name;
cell.detailTextLabel.text = location.address;
// cell.detailTextLabel.text = location.ide;
// cell.imageView.image = [UIImage imageNamed:#"location_image"];
if (searchController.active)
{
cell.textLabel.text = [self.searchResult objectAtIndex:indexPath.row];
}
else
{
cell.textLabel.text = self->_park[indexPath.row];
}
/////////////////
return cell;
}
My answer in comment if (tableView == self.yourSearchController. searchResultsController) would have worked if you had instantiated a different tableView controller and provided as SearchResultsController for UISearchController
But because you have specified nil in your init of UISearchControllersame tableView instance will be used as SearchResultsController. So comparing will result in always yes :)
Rather, you can depend on active property of UISearchController and check in what context tableView is being used and handle it appropriately :)
Hope I made my point clear :) Happy coding :)