Show keyboard automatically when UISearchController is loaded

Question

I created a UISearchController in a table view controller. I segue to this table view controller using a push segue from another view controller. I want the keyboard to show up

Answer 1

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(true)
    self.navigationItem.titleView = searchController!.searchBar
    dispatch_async(dispatch_get_main_queue(), {
        self.searchController?.active = true
        self.searchController!.searchBar.becomeFirstResponder()
    })
}

and this code

func presentSearchController(searchController: UISearchController) {
    searchController.searchBar.becomeFirstResponder()
}

make sure you give searchController?.delegate = self in viewDidLoad(). Tested on iOS 9.* device