当我第一次打开应用程序时，我的导航栏字体也不会改变我的自定义字体

Question

当我第一次打开应用程序时，我的导航栏字体也不会改变我的自定义字体，但是当我转到另一页面并返回页面时，字体会发生变化。有关如何修复导航栏字体始终是正确字体的任何想法吗？

以下默认字体。这在我打开应用程序时是正确的。

我的自定义字体当我点击页面然后回到此页面时，字体更新了。

这是我的App代码，如下所示。任何帮助都会很棒：）

    let navigationFont = UIFont(name: "MuseoSansRounded-900", size: 17)!
    let navigationLargeTitleFont = UIFont(name: "MuseoSansRounded-900", size: 34)!

    let navigationFontAttributes = [kCTFontAttributeName : navigationFont]
    let navigationLargeFontAttributes = [kCTFontAttributeName : navigationLargeTitleFont]

    UINavigationBar.appearance().titleTextAttributes = navigationFontAttributes as [NSAttributedStringKey : Any]
    UINavigationBar.appearance().largeTitleTextAttributes = navigationLargeFontAttributes as [NSAttributedStringKey : Any]
    UIBarButtonItem.appearance().setTitleTextAttributes(navigationFontAttributes as [NSAttributedStringKey : Any], for: .normal)

我已经解决了这个问题。我在应用程序委派上移动了更高的代码，当我第一次来到页面时，字体正在改变。更新后的代码如下。感谢大家的帮助！

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    // NAV BAR COLOR FOR ALL THE NAVS AND THE FONTS BELOW.

    UINavigationBar.appearance().shadowImage = UIImage()
    UINavigationBar.appearance().barTintColor = .white
    UINavigationBar.appearance().tintColor = blackSupportalColor

    // Navigation Bar Font Below
    let navigationFont = UIFont(name: "MuseoSansRounded-900", size: 17)!
    let navigationLargeTitleFont = UIFont(name: "MuseoSansRounded-900", size: 34)!

    let navigationFontAttributes = [kCTFontAttributeName : navigationFont]
    let navigationLargeFontAttributes = [kCTFontAttributeName : navigationLargeTitleFont]

    UINavigationBar.appearance().titleTextAttributes = navigationFontAttributes as [NSAttributedStringKey : Any]
    UINavigationBar.appearance().largeTitleTextAttributes = navigationLargeFontAttributes as [NSAttributedStringKey : Any]
    UIBarButtonItem.appearance().setTitleTextAttributes(navigationFontAttributes as [NSAttributedStringKey : Any], for: .normal)

Answer 1

这通常是因为你没有将它们包含在你的Xcode项目中。

您可以点击此链接，告诉您如何添加它们：https://medium.com/yay-its-erica/how-to-import-fonts-into-xcode-swift-3-f0de7e921ef8

该指南适用于 Swift 3 ，但Xcode 9的过程仍然相同。

Answer 2

我已经解决了这个问题。我在应用程序委派上移动了更高的代码，当我第一次来到页面时，字体正在改变。更新后的代码如下。感谢大家的帮助！

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    // NAV BAR COLOR FOR ALL THE NAVS AND THE FONTS BELOW.

    UINavigationBar.appearance().shadowImage = UIImage()
    UINavigationBar.appearance().barTintColor = .white
    UINavigationBar.appearance().tintColor = blackSupportalColor

    // Navigation Bar Font Below
    let navigationFont = UIFont(name: "MuseoSansRounded-900", size: 17)!
    let navigationLargeTitleFont = UIFont(name: "MuseoSansRounded-900", size: 34)!

    let navigationFontAttributes = [kCTFontAttributeName : navigationFont]
    let navigationLargeFontAttributes = [kCTFontAttributeName : navigationLargeTitleFont]

    UINavigationBar.appearance().titleTextAttributes = navigationFontAttributes as [NSAttributedStringKey : Any]
    UINavigationBar.appearance().largeTitleTextAttributes = navigationLargeFontAttributes as [NSAttributedStringKey : Any]
    UIBarButtonItem.appearance().setTitleTextAttributes(navigationFontAttributes as [NSAttributedStringKey : Any], for: .normal)