当我点击 searchBar 时如何禁用 UISearchController.search Bar 的取消按钮？答案

【问题标题】：How to disable cancel button of UISearchController.seachBar when i tap at searchBar?当我点击 searchBar 时如何禁用 UISearchController.search Bar 的取消按钮？
【发布时间】：2018-08-07 14:36:04
【问题描述】：

我想在点击搜索栏时禁用右取消按钮。由于使用 Google Place 搜索，我应该使用 searchController?.searchBar 我尝试在

处禁用取消按钮

func presentSearchController(_ searchController: UISearchController) {
    searchController.searchBar.showsCancelButton = false
}

但是当我点击搜索栏时，我看到取消按钮是如何出现和消失的，这看起来很难看请给我建议！

    override func viewDidLoad() {
    super.viewDidLoad()

    resultsViewController = GMSAutocompleteResultsViewController()
    resultsViewController?.delegate = self

    searchController = UISearchController(searchResultsController: resultsViewController)
    searchController?.searchResultsUpdater = resultsViewController

    searchController?.searchBar.sizeToFit()
    navigationItem.titleView = searchController?.searchBar
    searchController?.searchBar.placeholder = searchBarPlaceholderText
    searchController?.searchBar.tintColor = #colorLiteral(red: 0.1019607843, green: 0.5490196078, blue: 1, alpha: 1)
    searchController?.searchBar.delegate = self
    searchController?.delegate = self
    searchController?.searchBar.searchBarStyle = .prominent

    definesPresentationContext = true

    mapView.delegate = self
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest

    checklocationAuthorizationStatus()

    locationManager.requestWhenInUseAuthorization()
    locationManager.requestLocation()
    locationManager.startUpdatingLocation()
}


func presentSearchController(_ searchController: UISearchController) {
    searchController.searchBar.showsCancelButton = false
}

【问题讨论】：

标签： ios swift

【解决方案1】：

您可以创建自定义类和子类 UISearchBar 和 UISearchViewController。例如：-

class CustomizedSearchBar: UISearchBar {
    override func layoutSubviews() {
        super.layoutSubviews()
        setShowsCancelButton(false, animated: false)
    }
}

现在创建 CustomizedSearchBar 的对象并在其他 viewController 中使用它。

或者你可以创建一个自定义的searchViewController，如下：

class CustomizedSearchController: UISearchController, UISearchBarDelegate {

    lazy var _searchBar: CustomSearchBar = {
        [unowned self] in
        let result = CustomSearchBar(frame: CGRectZero)
        result.delegate = self

        return result
    }()

    override var searchBar: UISearchBar {
        get {
            return _searchBar
        }
    }
}

请关注this链接了解更多详情。

【讨论】：