嵌入 UIHostingController 时，无法将 SwiftUI 视图置于 SafeArea 之外

Question

我有一个简单的 SwiftUI 视图，其中包含 3 个文本元素：

struct ImageDescriptionView: View {
    var title: String?
    var imageDescription: String?
    var copyright: String?

    var body: some View {
        VStack(alignment: .leading) {
        
            if let title = title {
                Text(title)
                    .fontWeight(.bold)
                    .foregroundColor(.white)
                    .frame(maxWidth: .infinity, alignment: .leading)
            }
        
            if let imageDescription = imageDescription {
                Text(imageDescription)
                    .foregroundColor(.white)
                    .fontWeight(.medium)
                    .frame(maxWidth: .infinity, alignment: .leading)
            }
        
            if let copyright = copyright {
                Text(copyright)
                    .font(.body)
                    .foregroundColor(.white)
                    .frame(maxWidth: .infinity, alignment: .leading)
            }
        
        }
        .background(
            Color.blue
        )
    }
}

SwiftUI 视图嵌入在 UIHostingController 中：

class ViewController: UIViewController {

    private var hostingController = UIHostingController(rootView: ImageDescriptionView(title: "25. November 2021", imageDescription: "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.", copyright: "Bild © Unknown"))

    override func viewDidLoad() {
        super.viewDidLoad()
        setUpHC()
    }

    private func setUpHC() {
        hostingController.view.backgroundColor = .red
    
        view.addSubview(hostingController.view)
        hostingController.view.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            hostingController.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            hostingController.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            hostingController.view.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
        addChild(hostingController)
        hostingController.didMove(toParent: self)
    }

}

结果如下：

UIHostingController 总是比视图大。此外，它总是让 SwiftUI 视图尊重安全区域（在我的情况下，我不想要）

我想要的样子：

（请不要评论home指示器的可用性，这里不是这样）

UIHostingController 有什么问题？我尝试在ImageDescriptionView 内的所有视图上设置 .edgesIgnoreSafeArea(.all)，但没有帮助。

Answer 1

在 UIHostingControllers 属性上尝试以下操作

viewController._disableSafeArea = true

这应该可以解决问题。