Ios SwiftUI-显示警报

我希望在用户无需任何操作就移动到新页面并快速使用NavigationLink时显示警报

ContentView.swift

struct ContentView: View {
    var body: some View {
        VStack{
            NavigationLink(destination: SecondView()){
                Text("Go to second view")
            }
        }
    }
}

struct SecondView: View {
    @State var showAlert = true
    
    var body: some View {
        // i want to show alert when navigate to this view
        VStack{
            Text("Second View")
                .alert(isPresented: $showAlert) {
                    Alert(title: Text("You are in second view"))
                }
        }
    }
}

斯威夫特酒店

struct ContentView: View {
    var body: some View {
        VStack{
            NavigationLink(destination: SecondView()){
                Text("Go to second view")
            }
        }
    }
}

struct SecondView: View {
    @State var showAlert = true
    
    var body: some View {
        // i want to show alert when navigate to this view
        VStack{
            Text("Second View")
                .alert(isPresented: $showAlert) {
                    Alert(title: Text("You are in second view"))
                }
        }
    }
}

---

您可以帮助我吗？

当出现

VStack

时，将

showarert

值更改为true，如下所示

struct SecondView: View {
    @State var showAlert = false 
    
    var body: some View {
        // i want to show alert when navigate to this view
        VStack{
            Text("Second View")
                .alert(isPresented: $showAlert) {
                    Alert(title: Text("You are in second view"))
                }
        }.onAppear{
          showAlert = true
        }
    }
}

现在，我们将使用APAlert类显示警报

import SwiftUI

struct ContentView: View {
    
    var body: some View {
        VStack{
            Text("SHOW ALERT").onTapGesture {
                APAlert.shared.showAlert(title: "Title", message: "Error", buttonTitle: "OK")
            }
        }
    }
}

参考：-