SwiftUI 视图在关闭后立即被推送并弹出 sheet

Question

我遇到了显示行列表的 sheet 的问题，因此当按下一行时，应用程序应该转到另一个 view/screen（C 视图）和 sheet 已关闭，这正在发生，但 view/screen 在被推入后立即弹出。

iOS15

视图A：

import SwiftUI

struct A: View {
@State private var showNewMessage = false
@State private var showChatView = false
var body: some View {
    ZStack(alignment: .bottomTrailing){
        
        NavigationLink(
            destination: C(),
            isActive: $showChatView,
            label: {})
        
        //NavigationLink(destination: EmptyView(), label: {})
        
        
        ScrollView {
            VStack(alignment: .leading) {
                
                ForEach( 1...10, id: \.self){_ in
                    NavigationLink(
                        destination: C(),
                        label: {
                            ChatView()

                        })
                }
            }
        }
        
        Button(action: {
            //showNewMessage.toggle()
            showNewMessage = true
        }, label: {
            Image(systemName: "pencil")
                .resizable()
                .scaledToFit()
                .frame(width: 24, height: 24)
        })
        .padding()
        .foregroundColor(Color.white)
        .background(Color.blue)
        .clipShape(Circle())
        .sheet(isPresented: $showNewMessage, onDismiss: test, content: {
            B(showChatView: $showChatView, closeView: $showNewMessage)
        }).navigationViewStyle(StackNavigationViewStyle())
        
    }
    .padding(.horizontal)
}

func test(){
    print("Epale Debug: showChatValue: \(showChatView)")
}

func toggle(){
    showChatView.toggle()
}
}

视图 B：

import SwiftUI

struct B: View {
@Binding var showChatView: Bool
@Binding var closeView: Bool
//@Environment(\.presentationMode) var mode
var body: some View {
    Button(action: {
        //showChatView.toggle()
        showChatView = true
        closeView = false
        print("Epale Debug: showChatValue: \(showChatView)")
        //mode.wrappedValue.dismiss()
    }, label: {
        Text("Toggle")
    })
}
}

P.S.: 视图 C 只是另一个视图，我已经将 navigationViewStyle(StackNavigationViewStyle()) 属性添加到根文件中的 NavigationView。

Answer 1

一段时间后更改第二个状态，以便有机会完成 sheet 关闭，例如

Button(action: {
    closeView = false
    print("Epale Debug: showChatValue: \(showChatView)")

    DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
       showChatView = true      // << here !!
    }

}, label: {
    Text("Toggle")
})

SwiftUI 视图在关闭后立即被推送并弹出 sheet

SwiftUI View being pushed and popped out immediately after closing sheet

iphone

xcode

ios

swiftui

ios15