iOS中的backBarButtonItem(Swift)

Question

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

哪里 newNavigationItem: UINavigationItem

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？

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:

navigationController?.navigationBar.topItem?.backBarButtonItem = backButton

Answer 2

使用 leftBarButtomItem

newNavigationItem.backBarButtonItem = backButton

应该

newNavigationItem.leftBarButtonItem = backButton