使用@Binding在视图间传值引发无限循环问题求助

问题概述 #

在视图间传递State Object时出现嵌套视图问题，进入层级最深的视图后应用冻结，内存持续增长。

使用场景 #

合作伙伴列表 → 合作伙伴详情 → 位置列表 → 位置详情

原代码实现 #

视图模型 #

class PartnerViewModel: ObservableObject {
    @Published var partners: [Partner] = Partner.partners
}

该视图被加载到父类的TabView和NavigationStack组件中。

合作伙伴列表视图 #

struct PartnerListView: View {
    @StateObject var viewModel = PartnerViewModel()

    var body: some View {
        List($viewModel.partners, id: \.self) { $partner in
            NavigationLink {
                PartnerDetailView(partner: $partner)
            } label: {
                Text(partner.name)
            }
        }
    }
}

合作伙伴详情视图 #

struct PartnerDetailView: View {
    @Binding var partner: Partner

    var body: some View {
        Form {
            Section("Locations") {
                List($partner.locations, id: \.self) { $location in
                    NavigationLink {
                        LocationDetailView(location: $location)
                    } label: {
                        Text(location.name)
                    }
                }
            }

        }
    }
}

位置详情视图 #

struct LocationDetailView: View {
    @Binding var location: Location
    var body: some View {
        TextField("Name", text: $location.name)
    }
}

临时可行解决方案 #

修改后的合作伙伴详情视图 #

struct PartnerDetailView: View {
    @Binding var partner: Partner

    var body: some View {
        Form {
            Section("Locations") {
                List($partner.locations, id: \.self) { $location in
                    NavigationLink {
                        LocationDetailView(partner: $partner, locationIndex: partner.locations.firstIndex(of: location) ?? 0)
                    } label: {
                        Text(location.name)
                    }
                }
            }

        }
    }
}

修改后的位置详情视图 #

struct LocationDetailView: View {
    @Binding var partner: Partner
    var locationIndex: Int
    
    var body: some View {
        TextField("Name", text: $partner.locations[locationIndex].name)
    }
}

疑问 #

是不是我在视图间传值的方式有误？🤔

内容的提问来源于stack exchange，提问作者vargab