我正在尝试自定义 iOS默认Firebase AuthUI屏幕的配色方案。我可以更改NavigationBar文本颜色，但不能更改左侧LeftNavigationBarItem文本属性或主视图背景颜色。
这是我用来更改NavigationBar上主文本财产的代码：
let authVC = authUI!.authViewController()
authVC.navigationBar.barTintColor = UIColor.black
authVC.navigationBar.barStyle = .blackTranslucent
authVC.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor (displayP3Red: 255/255, green: 212/255, blue: 121/255, alpha: 1.0)]
我尝试了以下代码（每次一行）来更改NavigationBarItem文本财产：
authVC.navigationBar.backItem?.backBarButtonItem?.setTitleTextAttributes([NSAttributedStringKey.foregroundColor: UIColor (displayP3Red: 255/255, green: 212/255, blue:121/255, alpha: 1.0) ], for: .normal)
authVC.navigationItem.backBarButtonItem?.setTitleTextAttributes([NSAttributedStringKey.foregroundColor: UIColor (displayP3Red: 255/255, green: 212/255, blue: 121/255, alpha: 1.0) ], for: .normal)
我已尝试此操作来更改视图背景财产，每次更改一行：
authVC.visibleViewController?.view.backgroundColor = UIColor.black
authVC.view.backgroundColor = UIColor.black
authVC.view.layer.backgroundColor = UIColor.black.cgColor
authVC.visibleViewController?.view.layer.backgroundColor = UIColor.black.cgColor
我用的是FirebaseUI (5.2.0)，FirebaseAuth (5.0.3)
任何指示都将受到赞赏。
谢谢
下面的代码是你如何改变背景颜色，就像史酷比指出的那样，我也可以在添加自定义控制器作为根后修改我的authViewController，就像这样
让AuthViewController=MyAuthPickerViewController（AuthUI： AuthUI）
nav=UINavigationController（rootViewController： autViewController）
import UIKit
import FirebaseUI
class MyAuthPickerViewController : FUIAuthPickerViewController {
override func viewDidLoad() {
super.viewDidLoad()
let scrollView = view.subviews[0]
scrollView.backgroundColor = .clear
let contentView = scrollView.subviews[0]
contentView.backgroundColor = .clear
let width = UIScreen.main.bounds.size.width
let height = UIScreen.main.bounds.size.height
let backgroundImage = UIImageView(frame: CGRect(x: 0, y: -1, width: width, height: height))
backgroundImage.image = UIImage(named: "switchStarback")
backgroundImage.alpha = 0.6
view.backgroundColor = UIColor.init(named: "MatteBlack")
backgroundImage.contentMode = UIView.ContentMode.scaleAspectFill
view.insertSubview(backgroundImage, at: 0)
}
}
这已经通过子类化FUIAuthPickerViewController和在viewDidLoad方法中设置view.backgroundColor进行了排序
