ios - 如何从父 View 中关闭 SwiftUI NavigationView

Question

通常，要在 SwiftUI NavigationView 中实现“自定义关闭按钮”，我会使用 @Environment(\.dismiss) private var Dismiss，然后调用 dismiss() code> 关闭 View 。

但是，假设我想从 NavigationView 的父级中消除 NavigationLink ？

struct SwiftUIView: View {
    var body: some View {
        HStack {
            Button(action: {
                // dismiss view
            }) {
                Text("Dismiss View")
            } // assume this button is always visible
            NavigationView {
                Text("This is the NavigationView")
                NavigationLink {
                    Text("This is the view I want to exit")
                } label: {
                    Text("Go to view I want to exit")
                }
            }
        }
    }
}

如何通过单击父 View 中的关闭 View 按钮来关闭显示这是我要退出的 View 的 View ？

Answer 1

解决方案如下:

struct SwiftUIView: View {
    @State var isPresent = true
    @State var isDismissed: Bool = false
    
    var body: some View {
        HStack {
            Button(action: {
                isDismissed = true
            }) {
                Text("Dismiss View")
            } // assume this button is always visible
            
            NavigationView {
                VStack {
                    Text("This is the NavigationView")
                    NavigationLink {
                        ViewToDismiss(dismissView: $isDismissed)
                    } label: {
                        Text("Go to view I want to exit")
                    }
                }
            }
            
        }
    }
}

struct ViewToDismiss: View {
    @Environment(\.dismiss) private var dismiss
    @Binding var dismissView: Bool
    var body: some View {
        Text("This is the view I want to exit")
            .onChange(of: dismissView,
                      perform:
                        ( { newValue in
                dismiss()
            }))
    }
}