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swiftui realitykit uiviewrepresentable

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Accepted Answer
August 17, 2025 Score: 0 Rep: 61,060 Quality: High Completeness: 60%

Creating an ARView object inside a ContentView does the trick: ARView isn't frozen now.

import SwiftUI
import RealityKit
struct ARViewContainer : UIViewRepresentable {
    let arView: ARView
    func makeUIView(context: Context) -> ARView {
        let box = ModelEntity(mesh: .generateBox(size: 0.25))
        let anchor = AnchorEntity()
        anchor.addChild(box)
        arView.scene.addAnchor(anchor)
        box.move(
            to: Transform(roll: .pi),
            relativeTo: nil,
            duration: 15,
            timingFunction: .linear
        )
        return arView
    }
    func updateUIView( view: ARView, context: Context) { }
}

struct ContentView : View {
    let arView = ARView(
        frame: .zero,
        cameraMode: .nonAR,
        automaticallyConfigureSession: true
    )
    @State var scaleDown: Bool = false
    var body: some View {
        ZStack {
            ARViewContainer(arView: arView)
                .ignoresSafeArea()
            Image(systemName: "swift")
                .resizable()
                .foregroundStyle(.white)
                .scaleEffect(scaleDown ? 0.7 : 1.0)
                .frame(width: 50, height: 50)
                .position(x: 200.0, y: 100.0)
                .gesture(
                    DragGesture()
                        .onChanged {  in
                            scaleDown = true
                            Task {
                                try await Task.sleep(nanoseconds: UInt64(1e8))
                                scaleDown = false
                            }
                        }
                )
        }
    }
}