I can not find any info in internet about this question. I have tableview in UIViewcontroller and it is embedded in navigation controller. I want that my navbar was always like in scrolling state (borders are visible) and same thing with tabbar. Here is photo what I have(1-st) and what I want (2-nd).
In AppDelegate file in didFinishLaunchingWithOptions method added:
//MARK: - NavBar appearance
let navBarAppearance = UINavigationBarAppearance()
navBarAppearance.backgroundColor = UIColor(named: "AccentColor")
UINavigationBar.appearance().standardAppearance = navBarAppearance
UINavigationBar.appearance().scrollEdgeAppearance = navBarAppearance
//MARK: - TabBar appearance
let tabBarAppearance = UITabBarAppearance()
tabBarAppearance.backgroundColor = UIColor(named: "AccentColor")
UITabBar.appearance().standardAppearance = tabBarAppearance
UITabBar.appearance().scrollEdgeAppearance = tabBarAppearance