如何删除后退按钮的文本。
当前返回按钮:
<返回
需要的后退按钮:
< 其他任何东西
这些都没有奏效:
self.navigationItem.backBarButtonItem?.title = "Back"
self.backItem?.title = ""
self.navigationController?.navigationBar.backItem?.title = ""
self.navigationItem.backBarButtonItem?.title = ""
self.navigationController?.navigationItem.backBarButtonItem?.title="Back"
self.navigationController?.navigationBar.backItem?.title = ""
self.navigationController?.navigationItem.backBarButtonItem?.title
当前回答
如果你正在为视图控制器使用xib文件，那么在你的视图控制器类中这样做。
class AboutUsViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
edgesForExtendedLayout = []
setUpNavBar()
}
func setUpNavBar(){
//For title in navigation bar
self.navigationController?.view.backgroundColor = UIColor.white
self.navigationController?.view.tintColor = UIColor.orange
self.navigationItem.title = "About Us"
//For back button in navigation bar
let backButton = UIBarButtonItem()
backButton.title = "Back"
self.navigationController?.navigationBar.topItem?.backBarButtonItem = backButton
}
}
结果将是:
其他回答
虽然这些答案解决了问题，但这可能是一些有用的
class MainNavigatioController: UINavigationController {
override func pushViewController(_ viewController: UIViewController, animated: Bool) {
// first
let backItem = UIBarButtonItem()
backItem.title = "رجوع"
self.viewControllers.last?.navigationItem.backBarButtonItem = backItem
// then
super.pushViewController(viewController, animated: animated)
}
}
这对我很管用。斯威夫特5
navigationItem.backButtonTitle = ""
这应该可以工作:
override func viewDidLoad() {
super.viewDidLoad()
var button = UIBarButtonItem(title: "YourTitle", style: UIBarButtonItemStyle.Bordered, target: self, action: "goBack")
self.navigationItem.backBarButtonItem = button
}
func goBack()
{
self.navigationController?.popViewControllerAnimated(true)
}
虽然不建议这样做，因为这实际上取代了backButton，它也删除了后退箭头和滑动手势。
Swift 4.2
let backItem = UIBarButtonItem()
backItem.title = ""
navigationItem.backBarButtonItem = backItem
如果你正在从页面视图控制器页面推送一个视图控制器，你不能更新导航控制器的后退按钮标题。要解决这个问题，创建一个委托回到你的父视图控制器(你也可以遍历视图控制器层次结构回到父视图控制器)。
此外，后退按钮有字符限制。如果超过该字符限制，系统将默认为“返回”。它不会为你截断。例如:
backItem.title = "Birthdays/Anniversaries" // Get's converted to "Back".
backItem.title = "Birthdays/Anniversa…" // Fits and shows as is.
