乐胖代购免代理版

仕事用ブログに書くほどではない技術ネタ

Copilotの答え。iOS17でwarning発生

import SwiftUI
import Combine

struct ContentView: View {
    @State private var email: String = ""
    @State private var isValidEmail: Bool = true
    
    var body: some View {
        VStack {
            TextField("Enter your email", text: $email)
                .textFieldStyle(RoundedBorderTextFieldStyle())
                .padding()
                .onChange(of: email, perform: { value in
                    isValidEmail = validateEmail(value)
                })
            
            if !isValidEmail {
                Text("Invalid email address")
                    .foregroundColor(.red)
                    .padding()
            }
        }
        .padding()
    }
    
    func validateEmail(_ email: String) -> Bool {
        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
        let emailPred = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
        return emailPred.evaluate(with: email)
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

おしい。手直し。

iOS17対応版

import SwiftUI

struct ContentView: View {
    @State private var email: String = ""
    @State private var isValidEmail: Bool = true
    
    var body: some View {
        VStack {
            TextField("Enter your email", text: $email)
                .textFieldStyle(RoundedBorderTextFieldStyle())
                .padding()
                .onChange(of: email) { 
                    validateEmail(email)
                }
                .onSubmit {
                    validateEmail(email)
                }
            
            if !isValidEmail {
                Text("Invalid email address")
                    .foregroundColor(.red)
                    .padding()
            }
        }
        .padding()
    }
    
    func validateEmail(_ email: String) {
        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
        let emailPred = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
        isValidEmail = emailPred.evaluate(with: email)
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}