iOS中的backBarButtonItem（Swift）

Question

var backButton: UIBarButtonItem = UIBarButtonItem(title: "CUSTOM", style: UIBarButtonItemStyle.Bordered, target: self, action: nil)
    newNavigationItem.backBarButtonItem = backButton

newNavigationItem: UINavigationItem

在哪里

我想要自定义后退标题。它显示“后退”文本或“最后一个视图的标题”。所以它不起作用。为什么呢？

Answer 1

Yogesh Suthar说的方法将取代整个后退按钮，所以你不会有默认的左箭头标志！我建议使用这段代码：

closed = True

Answer 2

使用leftBarButtomItem

newNavigationItem.backBarButtonItem = backButton

应该是

newNavigationItem.leftBarButtonItem = backButton

Answer 3

override func viewDidLoad() {
 super.viewDidLoad()
  let newBackButton = UIBarButtonItem(title: "Back",
         style: UIBarButtonItemStyle.Plain, target: self, action: "backAction")
    navigationController?.navigationBar.topItem?.backBarButtonItem = newBackButton

}

func backAction() -> Void {
    self.navigationController?.popViewControllerAnimated(true)
}