iOS Swift：使用“返回”文本更新导航按钮

Question

There are few similar kind of questions asked and answered by many on Stackoverflow. But none of solution matches with my requirement.

I am using Swift3 for IOS mobile app development and used Navigation controller to manage the navigation. I gave title to all pages using below code.

self.title = "Title"

When I move to next page, then it shows me back button with the earlier page title. For some pages, title is long and it disturbs my header section of page.

Instead of page title, I want to change button text to "Back". Any idea how to do that?

Answer 1

if you are using storyboard then you can set back button title there, click on ViewController -> Navigation Item -> Back Button and set "Back" title.

alternatively you can set title in ViewWillApear and change it to "Back" in viewWillDisappear method

override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.title = "My Title"
}

override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.title = "Back"
}

Answer 2

In your prepare function before the segue do this:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    let backItem = UIBarButtonItem()
    backItem.title = "Back" // Change to desired title here
    navigationItem.backBarButtonItem = backItem
}

Answer 3

尝试删除的标题viewWillDisapperar然后重新进入它viewWillAppear

Answer 4

Try this:

self.navigationController?.navigationBar.topItem?.title = "Back"

It should work :)

Answer 5

尝试这个 ：

self.navigationController!.navigationBar.topItem!.title = "Back"