在 2 个 VC 之间传输时出现导航栏背景颜色问题

Question

我有一个HomeViewController，它推送到SendViewController，导航栏从深蓝色变为白色：

在HomeViewController.swift:

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    navigationController?.navigationBar.barStyle = .black
    navigationController?.navigationBar.barTintColor = Styleguide.Colors.darkBlue.color
    navigationController?.navigationBar.tintColor = Styleguide.Colors.lightBlue.color
}

 override func viewDidLoad() {
    super.viewDidLoad()

    view.backgroundColor = Styleguide.Colors.darkBlue.color

    navigationController?.navigationBar.barTintColor = Styleguide.Colors.darkBlue.color
    navigationController?.navigationBar.tintColor = Styleguide.Colors.lightBlue.color
    navigationController?.navigationBar.isTranslucent = false
    navigationController?.navigationBar.shadowImage = UIImage() // hides the bottom border
    self.navigationItem.hidesBackButton = true
    ... more 
}

在SendViewController.swift：

override func viewWillAppear(_ animated: Bool) {
   super.viewWillAppear(animated)
   self.navigationController?.navigationBar.barStyle = .default
}

override func viewWillDisappear(_ animated: Bool) {
   super.viewWillDisappear(animated)
   self.navigationController?.navigationBar.barStyle = .black
}

override func viewDidLoad() {
    super.viewDidLoad()

    view.backgroundColor = .white

    self.navigationController?.navigationBar.barTintColor = .white
    self.navigationController?.navigationBar.tintColor = Styleguide.Colors.darkBlue.color
    ... more
}

问题来了：

从Send弹出到Home时，导航栏为白色，动画结束后跳转为深蓝色。 （期望的结果是在弹出时从白色变为深蓝色的动画）

Answer 1

尝试添加

 navigationController?.navigationBar.barTintColor = Styleguide.Colors.darkBlue.color
 navigationController?.navigationBar.tintColor = Styleguide.Colors.lightBlue.color

查看SendViewController的WillDissapear