SwiftUI: after update to beta 7: using presentationMode raises error: dyld: lazy symbol binding failed

Question

我正在开发 Mac 应用程序并使用这样的代码关闭视图：

struct SwiftUIView: View {
    @Environment(\.presentationMode) var presentationMode : Binding<PresentationMode>

    var body: some View {
        HStack {
            Text("Hello World!")
            Button(action: {
                self.presentationMode.value.dismiss()
            }) {
                Text("Button")
            }
        }
    }
}

它在 beta 6 中运行良好，但在 beta 7 之后，审查不起作用，我在运行时遇到了这个错误： dyld：惰性符号绑定失败：未找到符号：_$s7SwiftUI7BindingV5valuexvg 当我删除此行时 "self.presentationMode.value.dismiss()" 它工作正常

Answer 1

PresentationMode 不再有值，现在是 wrappedValue。您缺少的符号是 SwiftUI.Binding.value.

SwiftUI: after update to beta 7: using presentationMode raises error: dyld: lazy symbol binding failed

SwiftUI: after update to beta 7: using presentationMode raises error: dyld: lazy symbol binding failed

xcode

swiftui

beta

dismiss