如何从 NavigationLink 中关闭工作表

问题描述

在以下示例中,我有一个视图显示一张 ViewOneViewOne一个 NavigationLinkViewTwo

如何从 ViewTwo 关闭工作表?

使用 presentationMode.wrappedValue.dismiss() 导航回 ViewOne

struct ContentView: View {

    @State private var isShowingSheet = false

    var body: some View {
        Button("Show sheet",action: {
            isShowingSheet.toggle()
        })
        .sheet(isPresented: $isShowingSheet,content: {
            ViewOne()
        })
    }
}

struct ViewOne: View {

    var body: some View {
        NavigationView {
            NavigationLink("Go to ViewTwo",destination: ViewTwo())
                .isDetailLink(false)
        }
    }
}

struct ViewTwo: View {

    @Environment(\.presentationMode) var presentationMode

    var body: some View {
        Button("dismiss sheet here") {
            presentationMode.wrappedValue.dismiss()
        }
    }
}

解决方法

这可能取决于平台 - 例如,在 macOS 上的 NavigationView 中,您现有的代码有效。

Binding 显式传递给原始工作表状态应该可以工作:

struct ContentView: View {

    @State private var isShowingSheet = false

    var body: some View {
        Button("Show sheet",action: {
            isShowingSheet.toggle()
        })
        .sheet(isPresented: $isShowingSheet,content: {
            ViewOne(showParentSheet: $isShowingSheet)
        })
    }
}

struct ViewOne: View {
    @Binding var showParentSheet : Bool
    
    var body: some View {
        NavigationView {
            NavigationLink("Go to ViewTwo",destination: ViewTwo(showParentSheet: $showParentSheet))
                //.isDetailLink(false)
        }
    }
}

struct ViewTwo: View {
    @Binding var showParentSheet : Bool
    @Environment(\.presentationMode) var presentationMode

    var body: some View {
        Button("Dismiss sheet here") {
            showParentSheet = false
        }
    }
}