updatesearchresultsforsearchcontroller 未調用

Question

有誰知道為什么不在這里調用它？ 謝謝。 我想我正確設置了代表。

class LocationSearchController: UIViewController, UISearchResultsUpdating, UINavigationBarDelegate, UISearchControllerDelegate {

let navigationBar = UINavigationBar(frame: CGRect(x: 0, y: 0, width: UIScreen.mainScreen().bounds.width, height: 44))

var locationSearchController: UISearchController!

override func viewDidLoad() {
    super.viewDidLoad()


    locationSearchController = UISearchController(searchResultsController: nil)

    self.locationSearchController.loadViewIfNeeded()

    //sets up search controller
    self.locationSearchController.searchResultsUpdater = self
    self.locationSearchController.delegate = self
    definesPresentationContext = true
    //self.videoSearchController.searchBar.delegate = self

    //sets up nav bar
    navigationBar.backgroundColor = UIColor.blackColor()
    navigationBar.delegate = self



    navigationItem.titleView = locationSearchController.searchBar
    //leftButton.title = "Left"
    //navigationItem.leftBarButtonItem = leftButton
    navigationBar.items = [navigationItem]

    self.view.addSubview(navigationBar)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

func updateSearchResultsForSearchController(searchController: UISearchController) {
    print("search results updated 2")
}

}

任何想法將不勝感激。 我已經搜索了一段時間，但沒有找到有關此問題的答案。

Answer 1

我在 iOS8 上遇到了同樣的問題。 這是一種解決方法，但它會解決這個問題。

• 讓 LocationSearchController 實現 UISearchBarDelegate

• 在 viewDidLoad 中添加這一行：

   locationSearchController.searchBar.delegate = self

• 添加此方法：

   func searchBar(searchBar: UISearchBar, textDidChange searchText: String) { updateSearchResultsForSearchController(locationSearchController) }

目標 C 使用這個

• (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{ [self updateSearchResultsForSearchController:locationSearchController]; }