滑动回根视图控制器时，大型导航栏背景颜色变得清晰 [英] large Navigation Bar backGround gets clear color when swiping back to root viewController

问题描述

我已经使用了 largeNavigationBar 并且没关系，直到我滑回根视图控制器并且大导航以令人讨厌的方式获得清晰的颜色.代码如下:

I have used largeNavigationBar and it's ok until i swipe back to root view controller and large navigation gets clear color in a nasty way. Here's the code:

func largeNavigationTitle() {
   
    self.navigationController?.view.backgroundColor = VVUtility.navigationBarColor()
    let productTitle = request?.product?.name
    self.navigationItem.title = "(productTitle ?? " ")".localized()
    self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: -2.0)]
    
    if #available(iOS 11.0, *) {
        self.navigationController?.navigationBar.prefersLargeTitles = true
        self.navigationController?.navigationBar.backgroundColor = VVUtility.splashBackGroundColor()
        self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: 0.0)]
    } else {
        // Fallback on earlier versions
    }
    
}

我在 viewWillAppear 和 viewDidLoad

更新

这是两种状态的截图:

刷卡前:imgur.com/a/ZcSOrov

刷卡时:imgur.com/a/DYeeot8

推荐答案

试试这个.它应该将根视图控制器的导航栏颜色设置为您想要的颜色:

Try this. It should set your root View controller's navigationBar's colour to the one you wanted:

func largeNavigationTitle() {

    self.navigationController?.view.backgroundColor = VVUtility.navigationBarColor()
   //add the two lines below
    self.navigationController?.navigationBar.barTintColor = VVUtility.navigationBarColor()
    self.navigationController?.navigationBar.isTranslucent = false

    let productTitle = request?.product?.name
    self.navigationItem.title = "(productTitle ?? " ")".localized()
    self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: -2.0)]

    if #available(iOS 11.0, *) {
        self.navigationController?.navigationBar.prefersLargeTitles = true
        self.navigationController?.navigationBar.backgroundColor = VVUtility.splashBackGroundColor()
        self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor : UIColor.white, NSAttributedStringKey.font : VVUtility.normalFontWithPlusSize(increaseSize: 0.0)]
    } else {
        // Fallback on earlier versions
    }

}

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