我如何在swift 5中的text（）中使用邮件链接，swiftui

Question

Swift 5中有数十个邮政链接的堆栈volfflow答案。

共识看起来像这样，

let url = NSURL(string: "mailto:[email protected]")
UIApplication.sharedApplication().openURL(url)

但是我如何实际使用此代码？理想情况下在警报中，但至少是一般文本元素

import SwiftUI

struct MainMenu: View {
    @State private var showAlert = false
    
    // What do I put here
    var emailLink:UIApplication {
        let url = URL(string: "mailto:[email protected]")!
        return UIApplication.shared.openURL(url)
    }
    
    // To make it work in here
    var body: some View {
        HStack(alignment: .center, spacing: .zero, content: {
            Text(
                "Here is an email link \(emailLink)"
            )
            
            Button(action: {
                showAlert = true
            }) {
                Text("MENU")
            }
            .alert(isPresented: $showAlert, content: {
                Alert(
                    title: Text("Title Here"),
                    message: Text(
                        "Need Help, \(emailLink)"
                    )
                )
            })
        })
    }
}

Answer 1

没有警报，基于

var body: some View {
    Text(
        "Here is an email link "
    )
            
    Link("[email protected]", destination: URL(string: "mailto:[email protected]")!)

Answer 2

您可以使用环境 var openUrl为此，documentation 在这里。

struct ContentView: View {
    @Environment(\.openURL) var openURL
    @State var alert: Bool = false
    var body: some View {
        HStack {
            Button(action: {
                alert.toggle()
            }, label: {
                Label("Email", systemImage: "envelope.fill")
            })
        }
        .alert("Contact", isPresented: $alert, actions: {
            Button(action: {
                mailto("[email protected]")
            }, label: {
                Label("Email", systemImage: "envelope.fill")
            })
            Button("Cancel", role: .cancel, action: {})
        })
    }
    
    func mailto(_ email: String) {
        let mailto = "mailto:\(email)".addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
        print(mailto ?? "")
        if let url = URL(string: mailto!) {
            openURL(url)
        }
    }
}