使用 NavigationLink() 时出现“类型 '[view]' 无法符合 'View'”错误

Question

我有一个使用 SwiftUI 构建的简单 Apple Watch 应用程序。我正在尝试添加一个按钮以从“我”转到“ContentView我SettingsView使用”NavigationLink

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struct ContentView: View {\n    \n    @EnvironmentObject var settings: SettingsObject\n    @EnvironmentObject var chilly: ChillyObject\n    \n    var body: some View {\n        ZStack{\n            VStack{\n\n                Text(chilly.message)\n                    .foregroundColor(chilly.textColor)\n                    .font(.largeTitle)\n                    .fontWeight(.heavy)\n                    .multilineTextAlignment(.center).fixedSize(horizontal: false, vertical: true)\n                    .padding(.top, 9.0)\n                            \n                Text(chilly.emoji)\n                    .font(.largeTitle).foregroundColor(Color.black)\n                    .multilineTextAlignment(.center)\n                    .padding(.bottom, -20.0)\n                \n                NavigationLink(destination: SettingsView) {\n                    Text("\xe2\x9a\x99\xef\xb8\x8f Settings")\n                        .font(.body)\n                        .fontWeight(.semibold)\n                }\n                .frame(width: 120.0)\n\n            }\n        }\n    }\n}\n

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struct SettingsView: View {\n    \n    @EnvironmentObject var settings: SettingsObject\n            \n    var body: some View {\n        ZStack {\n            VStack {\n                Text("Threshold Temp: \\(Int(settings.thresholdTemperature))\xc2\xb0 \\(settings.thresholdUnits)")\n                    .fontWeight(.light)\n                \n                Slider(value: $settings.thresholdTemperature, in: 30...90, step: 1)\n                    .padding([.leading, .bottom, .trailing])\n                \n            }\n        }\n    }\n}\n

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我收到此错误：Type 'SettingsView.Type' cannot conform to 'View'; only struct/enum/class types can conform to protocols在这一行：NavigationLink(destination: SettingsView) {在我的ContentView.

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我认为它是在我遵循教程并开始尝试使用@EnvironmentObject包装器而不是@ObservedObject包装器时引入的，但老实说我不能确定。任何见解都会很棒。谢谢！

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Answer 1

您正在传递目标参数的类型SettingsView，您应该传递一个实例。修改一下：

NavigationLink(destination: SettingsView)

到：

NavigationLink(destination: SettingsView())