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
斯威夫特4
虽然前面说的准备segue是正确的，后退按钮属于之前的VC，它只是增加了一堆不必要的代码。
最好的方法是在viewDidLoad中设置当前VC的标题，它会自动在下一个VC上正确设置返回按钮的标题。这句话对我很管用
navigationController?.navigationBar.topItem?.title = "Title"
其他回答
back按钮属于前一个视图控制器，而不是当前显示在屏幕上的那个。 要修改返回按钮，你应该在按之前更新它，在启动segue的视图控制器上:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let backItem = UIBarButtonItem()
backItem.title = "Something Else"
navigationItem.backBarButtonItem = backItem // This will show in the next view controller being pushed
}
Swift 3,4和5:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let backItem = UIBarButtonItem()
backItem.title = "Something Else"
navigationItem.backBarButtonItem = backItem // This will show in the next view controller being pushed
}
OR
// in your viewDidLoad or viewWillAppear
navigationItem.backBarButtonItem = UIBarButtonItem(
title: "Something Else", style: .plain, target: nil, action: nil)
下面的代码可以添加到视图控制器中，从你想要更改返回按钮文本的视图控制器中
斯威夫特5
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: self, action: nil)
例如:-
ViewController1 ViewController2
假设我们想要更新回viewcontroller2的标题，我们从viewcontroller1推送viewcontroller2。
那么您可以使用以下代码:-
let vc2 = storyboard.instantiateViewController(withIdentifier: "ViewController2")
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "your custom back button title", style: .plain, target: self, action: nil)
self.navigationController?.pushViewController(vc2, animated: true)
自我。标题= "" 之前self.navigationController ?。pushViewController(vc, animated: true)。
override func viewWillAppear(_ animated: Bool) {
self.tabBarController?.navigationItem.title = "Notes"
let sendButton = UIBarButtonItem(title: "New", style: .plain, target: self, action: #selector(goToNoteEditorViewController))
self.tabBarController?.navigationItem.rightBarButtonItem = sendButton
}
func goToNoteEditorViewController(){
// action what you want
}
希望能有所帮助!!3 #迅速
斯威夫特4
虽然前面说的准备segue是正确的，后退按钮属于之前的VC，它只是增加了一堆不必要的代码。
最好的方法是在viewDidLoad中设置当前VC的标题，它会自动在下一个VC上正确设置返回按钮的标题。这句话对我很管用
navigationController?.navigationBar.topItem?.title = "Title"
