UISearchControlleriOS11自定义

我之前使用iOS 11之前的代码来自定义UISearchController搜索栏的外观:

var searchCOntroller= UISearchController(searchResultsController: nil)
searchController.searchBar.setDefaultSearchBar()
searchController.searchResultsUpdater = self

if #available(iOS 11.0, *) {
    navigationItem.searchCOntroller= searchController
} else {
    tableView.tableHeaderView = searchController.searchBar
}

extension UISearchBar {
    func setDefaultSearchBar() {
        self.tintColor = UIColor.blue
        self.searchBarStyle = .minimal
        self.backgroundImage = UIImage(color: UIColor.clear)
        let searchBarTextField = self.value(forKey: "searchField") as! UITextField
        searchBarTextField.textColor = UIColor.white
        searchBarTextField.tintColor = UIColor.blue
        searchBarTextField = .dark
    }
}

但是,更新到iOS 11并添加任何自定义的UISearchController一部分(除了键盘外观证明我的代码已被调用)无法显示.这是一个错误还是我错误地实现了它？ navigationItem

编辑: 附件是运行iOS 10(第一个)和iOS 11的设备的两个屏幕截图

编辑2:到目前为止,关于这个问题的大部分注意力都集中在文本的颜色上UISearchBar.我在看比这更多-的背景颜色,色调的颜色,搜索指示器和清除按钮颜色等所有不能尽管是完全能够在iOS的10这么做运行iOS 11的设备上进行定制.

我刚刚发现了如何设置它们(在Brandon和Krunal的帮助下,谢谢!)

"取消"文字:

searchController.searchBar.tintColor = .white

搜索图标:

searchController.searchBar.setImage(UIImage(named: "my_search_icon"), for: UISearchBarIcon.search, state: .normal)

清晰的图标:

searchController.searchBar.setImage(UIImage(named: "my_search_icon"), for: UISearchBarIcon.clear, state: .normal)

搜索文字:

UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).defaultTextAttributes = [NSAttributedStringKey.foregroundColor.rawValue: UIColor.white]

占位符:

UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).attributedPlaceholder = NSAttributedString(string: "placeholder", attributes: [NSAttributedStringKey.foregroundColor: UIColor.white])

白色背景:

if #available(iOS 11.0, *) {
    let sc = UISearchController(searchResultsController: nil)
    sc.delegate = self
    let scb = sc.searchBar
    scb.tintColor = UIColor.white
    scb.barTintColor = UIColor.white

    if let textfield = scb.value(forKey: "searchField") as? UITextField {
        textfield.textColor = UIColor.blue
        if let backgroundview = textfield.subviews.first {

            // Background color
            backgroundview.backgroundColor = UIColor.white

            // Rounded corner
            backgroundview.layer.cornerRadius = 10;
            backgroundview.clipsToBounds = true;
        }
    }

    if let navigatiOnbar= self.navigationController?.navigationBar {
        navigationbar.barTintColor = UIColor.blue
    }
    navigationItem.searchCOntroller= sc
    navigationItem.hidesSearchBarWhenScrolling = false
}

取自这里.

要将键入搜索栏的文本正确设置为白色(使用暗场颜色时):

searchController.searchBar.barStyle = .black

设置文本字段背景颜色

if #available(iOS 11.0, *) {

        if let textfield = searchController.searchBar.value(forKey: "searchField") as? UITextField {
            if let backgroundview = textfield.subviews.first {

                // Background color
                backgroundview.backgroundColor = UIColor.white

                // Rounded corner
                backgroundview.layer.cornerRadius = 10;
                backgroundview.clipsToBounds = true;
            }
        }
    }

但是使用类似的东西

textfield.textColor = UIColor.blue

在上面似乎没有用.

尝试设置搜索栏的栏样式。

searchController.searchBar.barStyle = UIBarStyleBlack;