Ios 从“后退”按钮中删除以前的视图控制器文本

我想从我的后退按钮中删除“上一个视图控制器的文本”。正如您在示例中看到的，我有“珊瑚解剖”，我想删除，如果可能的话，只有“背部”，甚至删除V形

我试过很多，比如：

    navigationItem.backBarButtonItem?.title = "Test"
    navigationItem.backBarButtonItem = UIBarButtonItem(title: "Test", style: .Plain, target: nil, action: nil)
    navigationItem.leftBarButtonItem?.title = "Test"

这些都不起作用

---

有什么想法吗？

你可以这样尝试：

let newBackButton: UIBarButtonItem = UIBarButtonItem(title: "Back", style: .Plain, target: self, action: "btnBack")
self.navigationItem.backBarButtonItem = newBackButton

//handle the back click 

func btnBackClicked() {
   self.navigationController?.popToRootViewControllerAnimated(true)
}

---

您可以这样尝试：

let newBackButton: UIBarButtonItem = UIBarButtonItem(title: "Back", style: .Plain, target: self, action: "btnBack")
self.navigationItem.backBarButtonItem = newBackButton

//handle the back click 

func btnBackClicked() {
   self.navigationController?.popToRootViewControllerAnimated(true)
}

我使用Objective-C：

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:IS_IOS7?@"":@"返回" style:UIBarButtonItemStylePlain target:nil action:nil];

[controller.navigationItem setBackBarButtonItem:backButton];

我使用Objective-C：

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:IS_IOS7?@"":@"返回" style:UIBarButtonItemStylePlain target:nil action:nil];

[controller.navigationItem setBackBarButtonItem:backButton];

---

通过在viewDidLoad（）中设置navigationItem的leftBarButtonItem，可以自定义backbar按钮项，如下所示

override func viewDidLoad() {
        super.viewDidLoad()

        let backButton:UIBarButtonItem = UIBarButtonItem(title: "Back", style: UIBarButtonItemStyle.Done, target: self, action: "backBtnAction:")
        self.navigationItem.leftBarButtonItem = backButton
    }

    @IBAction func backBtnAction(sender:UIBarButtonItem)
    {
       //your code here
    }

---

通过在viewDidLoad（）中设置navigationItem的leftBarButtonItem，可以自定义backbar按钮项，如下所示

override func viewDidLoad() {
        super.viewDidLoad()

        let backButton:UIBarButtonItem = UIBarButtonItem(title: "Back", style: UIBarButtonItemStyle.Done, target: self, action: "backBtnAction:")
        self.navigationItem.leftBarButtonItem = backButton
    }

    @IBAction func backBtnAction(sender:UIBarButtonItem)
    {
       //your code here
    }