如何在Swift中设置按钮文本 [英] How to set back button text in Swift

问题描述

如何删除后退按钮文本。

How do you remove the back button text.

current back button: <Back
desired back button: <AnythingElse

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

推荐答案

后退按钮属于上一个视图控制器，而不是屏幕上当前显示的控制器。

修改后退按钮你应该在启动segue的视图控制器上之前更新它

The back button belongs to the previous view controller, not the one currently presented on screen.
To modify the back button you should update it before pushing, on the view controller that initiated the segue:

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：

Swift 3:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    let backItem = UIBarButtonItem()
    backItem.title = "Back"
    navigationItem.backBarButtonItem = backItem // This will show in the next view controller being pushed
}

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