Cannot set searchBar as firstResponder

Question

I have a searchBar I\'m setting in a tableviewcontroller. i\'ve referenced this similar question UISearchBar cannot become first responder after UITableView did re-appear bu

Answer 1

Xcode 11.4, Swift 5.2

If you just want the SearchBar to appear but not activate the TextField & keyboard. There is no need to dispatch it to the main thread.

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    searchController.isActive = true
}

---

If you want the TextField to activate with the keyboard, then you do need to call it on the main thread. There is no need to make the SearchController active, this happens automatically.

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    DispatchQueue.main.async {
        self.searchController.searchBar.becomeFirstResponder()
    }
}

---

This may depend on how you configure your SearchController. This is how I configure mine:

// Defined in class
let searchController = UISearchController(searchResultsController: nil)

// Called in viewDidLoad
navigationItem.searchController = searchController
searchController.searchResultsUpdater = self
searchController.searchBar.scopeButtonTitles = ["A", "B"]
searchController.searchBar.delegate = self          
searchController.obscuresBackgroundDuringPresentation = false