如何将 UIView 添加到 navigationItem.backBarButtonItem

Question

我正在努力实现这个

这是我的代码

    let contactName=UILabel()
    contactName.text=chat?.Name
    contactName.font=UIFont(name: "System", size: 17)
    contactName.sizeToFit()
    let contactImg=UIImageView()
    contactImg.image=UIImage(named: (chat?.Image)!)
    contactImg.frame.size.width=20
    contactImg.frame.size.height=20
    contactImg.layer.cornerRadius=contactImg.frame.height/2
    let backButtonView=UIView()
    backButtonView.addSubview(contactImg)
    backButtonView.addSubview(contactName)
    backButtonView.frame.size.width=20+contactName.frame.width
    backButtonView.frame.size.height=max(contactImg.frame.height,contactName.frame.height)
    navigationItem.backBarButtonItem=UIBarButtonItem(customView: backButtonView)

但是当我运行应用程序时它显示默认的后退栏按钮

我哪里做错了，请指导。

Answer 1

let profileImage = UIImage(named: "profile_image")
self.navigationController?.navigationBar.backIndicatorImage = profileImage
self.navigationController?.navigationBar.backIndicatorTransitionMaskImage = profileImage
self.navigationController?.navigationBar.backItem?.title = "Jhon"

Answer 2

Aditya 是对的，但这里有更多的解释。来自 Apple 文档：

When configuring your bar button item, do not assign a custom view to it; the navigation item ignores custom views in the back bar button anyway.

https://developer.apple.com/documentation/uikit/uinavigationitem/1624958-backbarbuttonitem

此外，UIBarButtonItem“...专门用于放置在工具栏或选项卡栏上。您通常使用 Interface Builder 来创建和配置栏按钮项。”

https://developer.apple.com/documentation/uikit/uibarbuttonitem

如何将 UIView 添加到 navigationItem.backBarButtonItem

How to add a UIView into navigationItem.backBarButtonItem

ios

swift3