Navigation bar disappears when typing in UISearchController text field

Question

I'm trying to figure out why my whole navigation bar disappears when I start typing in the UISearchController.searchBar It loads properly and animates properly, but I lose the active NavBar when I start typing. Here's the code to load the searchController from viewDidLoad:

    UITableViewController *searchResultsController = [[UITableViewController alloc] initWithStyle:UITableViewStylePlain];

    searchResultsController.tableView.dataSource = self;
    searchResultsController.tableView.delegate = self;
    searchResultsController.tableView.backgroundColor = [UIColor redColor];    

    self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];
    self.searchController.delegate = self;
    self.searchController.searchResultsUpdater = self;
    self.searchController.dimsBackgroundDuringPresentation = YES;
    self.searchController.hidesNavigationBarDuringPresentation = NO;

    [self.searchController.searchBar sizeToFit];

    self.tableView.tableHeaderView = self.searchController.searchBar;
    self.definesPresentationContext = NO;

And here's the result after I start typing:

Notice how the table view is there, but it appears to occupy the space of the nav controller and extend downwards into the first section heading. Any ideas?

Thanks.

Answer 1

You need to set definesPresentationContext to YES. From apples example:

// 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