iOS: how to add a search bar on navigation bar programmatically on a button press?

Question

I know how to initialise the UIsearchcontroller by doing this:

let searchResultsController = UITableViewController(style: .Plain) as UITableViewController
searchResultsController.tableView.delegate = self
searchResultsController.tableView.dataSource = self
searchController = UISearchController(searchResultsController: searchResultsController)

so, I have a button on navigation bar and on press I want to display SearchBar using UISearchController and then dismiss the search bar on tapping again on the search button or empty space of screen.

Answer 1

根据文档，更改搜索控制器的active属性会将搜索栏移动到导航栏