触摸后 UISearchController 看起来不对答案

【问题标题】：UISearchController is looking wrong after touch触摸后 UISearchController 看起来不对
【发布时间】：2015-09-25 01:41:21
【问题描述】：

我以编程方式将UISearchController 添加到UIViewController 中，当UIViewController 加载时一切都很好，但是当我在UISearchController 中触摸UISearchBar 时，它移动到底部并且看起来不对。我是第一次在代码中添加 UI 元素。

    override func viewDidLoad() {
    super.viewDidLoad()
    self.definesPresentationContext = true
    searchController = ({
        let controllerSearch = UISearchController(searchResultsController: nil)
        controllerSearch.searchBar.frame = CGRectMake(0, 20, self.view.frame.size.width, 44)
        controllerSearch.delegate = self
        controllerSearch.searchBar.delegate = self
        controllerSearch.searchBar.searchBarStyle = UISearchBarStyle.Default
        controllerSearch.dimsBackgroundDuringPresentation = false
        controllerSearch.hidesNavigationBarDuringPresentation = false
        controllerSearch.searchResultsUpdater = self
        controllerSearch.searchBar.sizeToFit()
        self.view.addSubview(controllerSearch.searchBar)
        return controllerSearch
    })()
}

虽然我让控制台显示了UISearchController 的框架，但它显示了正确的结果（0.0、20.0、320.0、44.0）请任何人帮助我。我还是试了一下，结果还是一样。

  let frame = CGRectMake(0, 20, self.view.frame.size.width, 44)
  controllerSearch.searchBar.frame = frame

【问题讨论】：

标签： ios xcode swift user-interface swift2

【解决方案1】：

我解决了我的问题。我添加了以下元素

@IBOutlet weak var navigationItemSearch: UINavigationItem!

并更改了我的UISearchController

   searchController = ({
        let controllerSearch = UISearchController(searchResultsController: nil)
        controllerSearch.delegate = self
        controllerSearch.searchBar.delegate = self
        controllerSearch.searchBar.searchBarStyle = UISearchBarStyle.Prominent
        controllerSearch.dimsBackgroundDuringPresentation = false
        controllerSearch.hidesNavigationBarDuringPresentation = false // false
        controllerSearch.searchBar.searchBarStyle = UISearchBarStyle.Default
        controllerSearch.searchResultsUpdater = self
        // placing
        controllerSearch.searchBar.sizeToFit()
        navigationItemSearch.titleView = controllerSearch.searchBar
        //
        controllerSearch.searchBar.spellCheckingType = UITextSpellCheckingType.Yes
        controllerSearch.searchBar.autocapitalizationType = UITextAutocapitalizationType.None
        controllerSearch.searchBar.keyboardType = UIKeyboardType.WebSearch
        return controllerSearch
    })()

【讨论】：