swiftui视图uiview

Question

我试图在Uiview的内部注入SwiftUi视图，它显示了我的SwiftUi视图，但是框架已经远了，我无法弄清楚原因。

更新：解散视图控制器并再次重新加载后，SwiftUI视图被完美地加载/显示，为什么？

这是我的swiftui视图：

@available(iOS 14.0, *)
struct AvailablePointsSummary: View {
    
    @State private var points: PointsResponse? = nil
    
    var body: some View {
        if let points = points {
            GroupBox(
                label:  SummaryLabelView(labelText: "Available Points")
            ) {
                SummaryRow(title: "Cash Points", amount: Float(points.cashoutPoints).withCommas())
                SummaryRow(title: "Promo Points", amount: Float(points.availablePromoPoints ?? 0).withCommas())
            }
            .frame(width: 380, height: 160)
        } else {
            Text("Loading...")
                .onAppear {
                    getPoints()
                }
        }

    }
    
    func getPoints() {
        PointsService().getPointsResponse { points in
            DispatchQueue.main.async {
                self.points = points
            }
        }
    }
    
}

@available(iOS 14.0, *)
var availPointsSummary = UIHostingController(rootView: AvailablePointsSummary())

我的uiviewController中的设置

func setupAvailablePoints(){
        let pointView = availPointsSummary.view
        pointView?.translatesAutoresizingMaskIntoConstraints = false
        pointView?.frame = CGRect(x: 0, y: 0, width: 380, height: 160)
        
        self.availPointsView.addSubview(pointView!)
        self.addChild(availPointsSummary)
    }

和结果

Answer 1

尝试解决此问题的多个选项:-)

尝试layoutifneed在添加hostingController的视图之后

，或

尝试在view> view wwilllayoutsubviews或Overlide loadView中设置帧

或

尝试启用启用启用operage loadViews 自动大小面具

pointView.autoresizingMask = [.flexibleWidth, .flexibleHeight]

或

添加以下约束

NSLayoutConstraint.activate([
    pointView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
    pointView.centerYAnchor.constraint(equalTo: view.centerYAnchor),
    pointView.heightAnchor.constraint(equalToConstant:380),
    pointView.widthAnchor.constraint(equalToConstant:160)
])