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

UINavigationBar.appearance().barStyle = .blackOpaque
return true
}

this works for me, as my navigation barTintColor was black and unable to see the status bar when set above code it didFinishLaunch status bar appears in white.

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

    UINavigationBar.appearance().barStyle = .blackOpaque
    return true
}

This works for me, as my navigation barTintColor was black and unable to see the status bar.

When set above code it didFinishLaunch status bar appears in white.