在导航栏中使 SearchBar 更高

Question

我尝试创建一个搜索栏，现在它工作正常，但我不知道如何让它更高一点，就在状态栏下方。 搜索栏是通过编程方式创建的，我使用了这段代码：

let searchController = UISearchController(searchResultsController: nil)




override func viewDidLoad() {
    super.viewDidLoad()

    searchController.searchResultsUpdater = self
    searchController.obscuresBackgroundDuringPresentation = false
    searchController.hidesNavigationBarDuringPresentation = false
    definesPresentationContext = true
    navigationItem.searchController = searchController
    navigationItem.hidesSearchBarWhenScrolling = false
}

Answer 1

您的意思是，您希望在导航栏的位置有一个搜索栏。如果是这种情况，请尝试在导航栏中添加搜索栏。

试试这个

var leftNavBarButton = UIBarButtonItem(customView:Yoursearchbar)
self.navigationItem.leftBarButtonItem = leftNavBarButton

你保留了一个懒惰的 UISearchBar 属性

lazy var searchBar:UISearchBar = UISearchBar(frame: CGRectMake(0, 0, 200, 20))

在 viewDidLoad 中

searchBar.placeholder = "Your placeholder"
var leftNavBarButton = UIBarButtonItem(customView:searchBar)
self.navigationItem.leftBarButtonItem = leftNavBarButton

如果您想使用故事板，只需将您的搜索栏拖动为插座，然后将惰性属性替换为您的插座搜索栏

或者简单

// create the search bar programatically since you won't be
// able to drag one onto the navigation bar


searchBar = UISearchBar()  
searchBar.sizeToFit()


// the UIViewController comes with a navigationItem property
// this will automatically be initialized for you if when the
// view controller is added to a navigation controller's stack
// you just need to set the titleView to be the search bar

navigationItem.titleView = searchBar