[英]NavigationBar title doesn't appear
我以编程方式添加NavigationBar,后来又添加了标题,但它根本没有出现。 这里有什么问题?
let navigationBar = UINavigationBar(frame: CGRectMake(0, 0, self.view.frame.size.width, 55))
navigationBar.barTintColor = UIColor(red: 44/255, green: 54/255, blue: 63/255, alpha: 1)
navigationController?.navigationItem.title = "AAA"
UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName : UIColor.whiteColor()]
view.addSubview(navigationBar)
导航栏出现,但标题不是。 怎么解决?
我也试过这个:
navigationBar.topItem?.title = "BBB"
什么也没有
希望这会帮助你。
// Create the navigation bar
let navigationBar = UINavigationBar(frame: CGRectMake(0, 0, self.view.frame.size.width, 64))
// Offset by 20 pixels vertically to take the status bar into account
navigationBar.backgroundColor = UIColor.whiteColor()
// Create a navigation item with a title
let navigationItem = UINavigationItem()
navigationItem.title = "Title"
// Assign the navigation item to the navigation bar
navigationBar.items = [navigationItem]
// Make the navigation bar a subview of the current view controller
self.view.addSubview(navigationBar)
这段代码对我有用。
更新:Swift 4 / Swift 5
// Create the navigation bar
let navigationBar = UINavigationBar(frame: CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: 64))
// Offset by 20 pixels vertically to take the status bar into account
navigationBar.backgroundColor = UIColor.white
// Create a navigation item with a title
let navigationItem = UINavigationItem()
navigationItem.title = "Title"
// Assign the navigation item to the navigation bar
navigationBar.items = [navigationItem]
// Make the navigation bar a subview of the current view controller
self.view.addSubview(navigationBar)
导航栏标题在显示的视图控制器中设置。 通常这是在视图中完成视图控制器上的加载:
override func viewDidLoad() {
super.viewDidLoad()
self.title = "AAA"
}
编辑:在意识到OP正在向UIViewController
添加UINavigationBar
而不使用标准UINavigationController
:
let navigationBar = UINavigationBar(frame: CGRectMake(0, 0, self.view.frame.size.width, 55))
navigationBar.barTintColor = UIColor(red: 44/255, green: 54/255, blue: 63/255, alpha: 1)
let navigationItem = UINavigationItem.init(title: "AAA")
navigationBar.items = [navigationItem]
view.addSubview(navigationBar)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.