swift - 如何在 Xcode 中左对齐导航栏的标题？

Question

我一直在尝试以下方法以使导航栏的标题左对齐:

在 AppDelegate.swift 文件中:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.


    UINavigationBar.appearance().barTintColor = UIColor.red
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName:
        UIColor.white]
    return true
}

在 TableViewController.swift 文件中:

override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        self.navigationController?.navigationBar.topItem?.title = "Home"
    }

但我没有找到解决问题的办法。我还尝试了我在此处找到的以下内容，但没有显示任何内容:

在 AppDelegate.swift 文件中:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.


    UINavigationBar.appearance().barTintColor = UIColor.red
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName:
        UIColor.white]
let lbNavTitle = UILabel (frame: CGRect(x: 0, y: 40, width: 320, height: 40))
    lbNavTitle.center = CGPoint(x: 160, y: 285)
    lbNavTitle.textAlignment = .left
    lbNavTitle.text = "Home"
    self.navigationItem.titleView = lbNavTitle

在 TableViewController.swift 文件中:

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    self.navigationController?.navigationBar.topItem?.title = "Home"
    let lbNavTitle = UILabel (frame: CGRect(x: 0, y: 0, width: 320, height: 40))
    lbNavTitle.backgroundColor = UIColor.red
    lbNavTitle.textColor = UIColor.black
    lbNavTitle.numberOfLines = 0
    lbNavTitle.center = CGPoint(x: 0, y: 0)
    lbNavTitle.textAlignment = .left
    lbNavTitle.text = "Home"

    let string = NSMutableAttributedString ("Title/nSubTitle")

    self.navigationItem.titleView = lbNavTitle
}

Answer 1

let label = UILabel()
label.textColor = UIColor.white
label.text = "TCO_choose_reminder".localized;
self.navigationItem.leftBarButtonItem = UIBarButtonItem.init(customView: label)

我使用获取 UIView 的构造函数初始化 UIBarButtonItem，并将我想要的标签设置为参数以获取以下内容。

编辑:

如果您不想移除后退按钮。设置以下标志。

self.navigationItem.leftItemsSupplementBackButton = true

请记住，标签 + 后退按钮(带标题)看起来不太酷。在这种情况下，我将默认后退按钮替换为箭头 Assets 。