如何在Swift中设置后退按钮文本

小编典典

如何在Swift中设置后退按钮文本

swift

如何删除后退按钮文本。

当前的后退按钮：

<返回

所需的后退按钮：

<其他

这些都不起作用：

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

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2020-07-07

共1个答案

小编典典

后退按钮属于上一个视图控制器，而不是当前在屏幕上显示的那个。
要修改后退按钮，您应该在启动segue的视图控制器上在按下按钮之前对其进行更新：

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
}

斯威夫特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
}

要么

// in your viewDidLoad or viewWillAppear
navigationItem.backBarButtonItem = UIBarButtonItem(
    title: "Something Else", style: .plain, target: nil, action: nil)

2020-07-07