//
private func setupNavigationBar() {
view.addSubview(navigationBar)
navigationBar.items = [navItem]
navigationBar.barTintColor = UIColor.red
navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.darkGray]
navigationBar.tintColor = UIColor.orange
}
iOS 之导航控制器颜色设置区别