快速导入并显示 .usdz 文件答案

【问题标题】：Import and display .usdz file in swift快速导入并显示 .usdz 文件
【发布时间】：2022-09-29 22:06:23
【问题描述】：

我尝试将一些 .usdz 文件导入应用程序并使用 SceneView 显示 3D 模型。当我显示一些已经在我的 Xcode 文件夹中的模型时，它可以工作。但是，当在我的手机上运行该应用程序并尝试从我的手机导入文件时，print(fileName) 仍然可以获得正确的文件名，但 SceneView 中没有显示任何内容......有人可以帮忙吗？

@State var fileName = \"\"
@State var openFile = false
@State var model = Model(id: 0, modelName: \"\")

var body: some View {
    VStack{
        VStack {
            Text(fileName)
                .fontWeight(.bold)

            Button {
                openFile.toggle()
            } label: {
                Text(\"Come On\")
            }
        }
        .fileImporter(isPresented: $openFile, allowedContentTypes: [.usdz]) {  result in
            switch result {
            case .success(let url):

                _ = url.startAccessingSecurityScopedResource()
                print(url)
                self.fileName = url.lastPathComponent
                print(fileName)
                model.modelName = fileName

            case.failure(let error):
                print(error)
            }
        }
        SceneView(scene: SCNScene(named: model.modelName) , options: [.autoenablesDefaultLighting,.allowsCameraControl])
            .frame(width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height / 2)

标签： swift xcode

【解决方案1】：

将 SCNScene(named: model.modelName) 更改为 let scene = try? SCNScene(url: url!)

例子

struct Viewer3D: View {

@State var urlLocalModel: URL?
@State var openFile = false

var body: some View {
    VStack{
        VStack {
            Button {
                openFile.toggle()
            } label: {
                Text("Open File Local USDZ")
            }
        }
        .fileImporter(isPresented: $openFile, allowedContentTypes: [.usdz]) {  result in
            switch result {
            case .success(let url):
                _ = url.startAccessingSecurityScopedResource()
                self.urlLocalModel = url
                print(url)
            case.failure(let error):
                print(error)
            }
        }
        if (urlLocalModel != nil) {
            let scene = try? SCNScene(url: urlLocalModel!)
            SceneView(scene: scene, options: [.autoenablesDefaultLighting,.allowsCameraControl])
                .frame(width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.width)
        }
    }
}}

【讨论】：