导航不在Swiftui中工作 - 弹出特定视图

Question

我正在尝试使用SwiftUI的NavigationLink的iSActive绑定来弹出特定视图。这是我的代码：

struct Root: View
{
    @Environment(\.dismiss) var dismissValue: DismissAction
    @State var rootToView1Navigattion: Bool = false
    
    var body: some View
    {
        HStack
        {
            NavigationLink(isActive: $rootToView1Navigattion) {
                View1()
            } label: {
                EmptyView()
            }

            Button {
                dismissValue()
            } label: {
                Text("Go Back")
                    .font(.title3)
                    .padding()
                    .background(Color.yellow)
            }

            Button {
                rootToView1Navigattion = true
            } label: {
                Text("Go Forward")
                    .font(.title3)
                    .padding()
                    .background(Color.green)
            }
        }
        .navigationTitle(String(describing: Self.self))
    }
}

struct View1: View
{
    @Environment(\.dismiss) var dismissValue: DismissAction
    @State var view1ToView2Navigation: Bool = false
    
    var body: some View
    {
        HStack
        {
            NavigationLink(isActive: $view1ToView2Navigation) {
                View2(view1ToView2NavBinding: $view1ToView2Navigation)
            } label: {
                EmptyView()
            }
            
            Button {
                dismissValue()
            } label: {
                Text("Go Back")
                    .font(.title3)
                    .padding()
                    .background(Color.yellow)
            }

            Button {
                view1ToView2Navigation = true
            } label: {
                Text("Go Forward")
                    .font(.title3)
                    .padding()
                    .background(Color.green)
            }
        }
        .navigationTitle(String(describing: Self.self))
    }
}

struct View2: View
{
    @Binding var view1ToView2NavBinding: Bool
    
    var body: some View
    {
        HStack
        {
            Button {
                view1ToView2NavBinding = false
            } label: {
                Text("Go Back")
                    .font(.title3)
                    .padding()
                    .background(Color.yellow)
            }
        }
        .navigationTitle(String(describing: Self.self))
    }
}

按照我的概念，view1具有属性view1toview2navigation，该将传递给iSACTIVE navigation> navigation> navigationlink 。此属性将以绑定到view2的方式传递。当我在view2中将其设置为False时，上述所有内容view1都应解散。但这是不起作用的，我在概念上错过了一些东西吗？

我的rootview包含在navigationView中。当我在root和view1之间进行相同的操作时。它运行顺利。

Answer 1

编辑：根据您的新评论，您想从视图2导航到root。

尝试以下代码。当您按“ view2”中的“黄色背”按钮时，您将被导航到根。

import SwiftUI

struct ContentView: View
{
@Environment(\.dismiss) var dismissValue: DismissAction
@State var toRoot = false
var body: some View
{
NavigationView
{
    HStack {
        Button {
            dismissValue()
        } label: {
            Text("Go Back")
                .font(.title3)
                .padding()
                .background(Color.yellow)
        }

        NavigationLink {
            View1(toRoot: $toRoot)
        } label: {
            Text("Go Forward")
                .font(.title3)
                .padding()
                .background(Color.green)
        }
    }
}
.navigationTitle(String(describing: Self.self))
}
}

struct View1: View
{
@Environment(\.dismiss) var dismissValue: DismissAction
@Binding var toRoot: Bool
var body: some View
{
HStack
{
    Button {
        dismissValue()
    } label: {
        Text("Go Back")
            .font(.title3)
            .padding()
            .background(Color.yellow)
    }
    NavigationLink {
        View2(toRoot: $toRoot)
    } label: {
        Text("Go Forward")
            .font(.title3)
            .padding()
            .background(Color.green)
    }
}
.navigationTitle(String(describing: Self.self))
.onAppear {
    if toRoot {
        dismissValue()
    }
}
}
}

struct View2: View
{
@Binding var toRoot: Bool
@Environment(\.dismiss) var dismissValue: DismissAction

var body: some View
{
HStack
{
    Button {
        toRoot = true
        dismissValue()
    } label: {
        Text("Go Back")
            .font(.title3)
            .padding()
            .background(Color.yellow)
    }
}
.navigationTitle(String(describing: Self.self))
}
}