ios - 如何在键盘上单击搜索按钮时进行搜索？

Question

我的表格 View 标题中有一个搜索栏。为此，我正在使用 uisearchcontroler。但是当我在搜索栏中发短信时它会更新 tablview 数据，我需要在单击键盘中的搜索按钮时更新 tablview，因为我在 api 中获取用于搜索的数据，并且每次我在搜索栏中发短信时它都会请求并且需要很长时间。我该如何解决这个问题？

var resultSearchController = UISearchController()
var indicator:UIActivityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.Gray)
var ref=UIRefreshControl()
override func viewDidLoad() {
    super.viewDidLoad()


    self.resultSearchController = ({
        let controller = UISearchController(searchResultsController: nil)
        controller.searchResultsUpdater = self
        controller.dimsBackgroundDuringPresentation = false
        controller.searchBar.sizeToFit()

        self.tableView.tableHeaderView = controller.searchBar

        return controller
    })()

    indicator.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
    indicator.center = view.center
    view.addSubview(indicator)
    indicator.bringSubviewToFront(view)

    indicator.startAnimating()
    UIApplication.sharedApplication().networkActivityIndicatorVisible = true

    getRequests.getType1(tableView,spinner: indicator)

    ref.addTarget(self, action: #selector(Catalog1TableViewController.refresh(_:)), forControlEvents: UIControlEvents.ValueChanged)
    ref.attributedTitle = NSAttributedString(string: "Загрузка")
    tableView.addSubview(ref)

}


func updateSearchResultsForSearchController(searchController: UISearchController)
{
    indicator.startAnimating()
    UIApplication.sharedApplication().networkActivityIndicatorVisible = true
    tableView.reloadData()
    getRequests.getProduct(tableView, spinner: indicator,name: searchController.searchBar.text!)
    for item in getRequests.product {
        if item.productTitle.containsString(searchController.searchBar.text!){
            filteredTableData.append(item)
        }

    }
    tableView.reloadData()
}

Answer 1

尝试实现 UISearchBar 委托(delegate)方法:

func searchBarSearchButtonClicked(searchBar: UISearchBar)