iOS 问题记录

if #available(iOS 13.0, *) {
    let buttonAppearance = UIBarButtonItemAppearance()
    buttonAppearance.configureWithDefault(for: .plain)
    buttonAppearance.normal.titleTextAttributes = [.foregroundColor: UIColor.red]

    let navigationBarAppearance = UINavigationBarAppearance()
    navigationBarAppearance.configureWithOpaqueBackground()
    navigationBarAppearance.backgroundColor = .blue
    navigationBarAppearance.titleTextAttributes = [.foregroundColor: UIColor.red]

    navigationBarAppearance.backButtonAppearance = buttonAppearance
    navigationBarAppearance.buttonAppearance = buttonAppearance
    navigationBarAppearance.doneButtonAppearance = buttonAppearance

    navigationController?.navigationBar.scrollEdgeAppearance = navigationBarAppearance
    navigationController?.navigationBar.compactAppearance = navigationBarAppearance
    navigationController?.navigationBar.standardAppearance = navigationBarAppearance
} else {
    navigationController?.navigationBar.barTintColor = .blue
    navigationController?.navigationBar.titleTextAttributes = [.foregroundColor: UIColor.red]
    navigationController?.navigationBar.tintColor = .red
}

来源：oschina

链接：https://my.oschina.net/rc6688/blog/4836472