问有没有办法给NavigationLink添加一个额外的函数？SwiftUI

EN

import Foundation
import SwiftUI

// NavigationLink replacement with action
// Usage:
//var body: some View {
//  NavigationButton(
//      action: { print("tapped!") },
//      destination: { Text("Pushed View") },
//      label: { Text("Tap me") }
//  )
//}

struct NavigationButton<Destination: View, Label: View>: View {
        var action: () -> Void = { }
        var destination: () -> Destination
        var label: () -> Label

        @State private var isActive: Bool = false

        var body: some View {
                Button(action: {
                        self.action()
                        self.isActive.toggle()
                }) {
                        self.label()
                            .background(
                                ScrollView { // Fixes a bug where the navigation bar may become hidden on the pushed view
                                        NavigationLink(destination: LazyDestination { self.destination() },
                                                                                                 isActive: self.$isActive) { EmptyView() }
                                }
                            )
                }
        }
}

// This view lets us avoid instantiating our Destination before it has been pushed.
struct LazyDestination<Destination: View>: View {
        var destination: () -> Destination
        var body: some View {
                self.destination()
        }
}