显示自定义弹出窗口时的 SwiftUI 导航栏外观和功能

SwiftUI navigation bar appearance and functionality when custom popup shows

我正在尝试显示自定义弹出窗口,在显示时,我需要禁用背景并使背景变暗,就像在内置警报功能中所做的那样。但是,当视图中有导航栏时,彩色层不能放在导航栏的顶部。

期望的结果就像在内置警报修改器中所做的那样,使整个背景变暗(使用导航栏),同时禁用与背景(和导航栏)交互的能力。

有没有办法实现与内置警报修改器相同的功能和外观?

示例项目代码

import SwiftUI

struct ContentView: View {
    @State private var isShowingPopup = false
    
    var body: some View {
        NavigationView {
            VStack {
                Text("Just a random text")
                    .padding(.bottom, 100)
                Button("Show popup") {
                    isShowingPopup = true
                }
            }
            .showPopup(isActive: isShowingPopup, action: { isShowingPopup = false })
            .navigationBarTitle("Test navbar", displayMode: .inline)
            .navigationBarItems(
                trailing: Button(
                    action: { print("profile tapped")},
                    label: {
                        Text("Profile")
                    }
                )
            )
        }
    }
}

extension View {
    func showPopup(
        isActive: Bool,
        action: @escaping () -> Void
    ) -> some View {
        ZStack {
            self
            if isActive {
                Color.black
                    .frame(maxWidth: .infinity, maxHeight: .infinity)
                    .edgesIgnoringSafeArea(.all)
                    .opacity(0.51)
                    .zIndex(1)
                Popup(action: action)
                    .zIndex(2)
            }
        }
    }
}

struct Popup: View {
    let action: () -> Void
    
    var body: some View {
        VStack {
            Text("This is a popup")
                .foregroundColor(.black)
                .padding()
            Button("OK", action: action)
                .foregroundColor(.blue)
        }
        .background(Color.white)
        .cornerRadius(8)
    }
}

感谢您的帮助!

添加到最后。在 NavigationView 的最后添加 showPopup

NavigationView {
    VStack {
        Text("Just a random text")
            .padding(.bottom, 100)
        Button("Show popup") {
            isShowingPopup = true
        }
    }
    
    .navigationBarTitle("Test navbar", displayMode: .inline)
    .navigationBarItems(
        trailing: Button(
            action: { print("profile tapped")},
            label: {
                Text("Profile")
            }
        )
    )
}
.showPopup(isActive: isShowingPopup, action: { isShowingPopup = false }) //<---Here