I developed App to use iMessage or Message App. I have used MessageUI.I can display message App's contents on modal, but can't press submit(send?) button of the message App on modal. It's pressed but no response. Why is that? Is there anyone who is worried about the same thing? Please help me. Content.swift-Excerpt }).sheet(isPresented: $isShowSheet) {                     SMSView(number: UserDefaults.standard.string(forKey: "key") ?? "\(text)") Message.swift import SwiftUI import MessageUI struct SMSView: UIViewControllerRepresentable {     var number : String     func makeCoordinator() -> Coordinator{         Coordinator(self)     }     func makeUIViewController(context: Context) -> UIViewController {         let composeVC = MFMessageComposeViewController()         if !MFMessageComposeViewController.canSendText() {             print("SMS services are not available")         }else {             composeVC.messageComposeDelegate = context.coordinator             composeVC.recipients = [number] //宛先             composeVC.body = "おはようございます" //本文             }             return composeVC     }     func updateUIViewController(_ uiViewController: UIViewController, context: Context) {     } } Coordinator.swift import SwiftUI import MessageUI class Coordinator: NSObject,UINavigationControllerDelegate,MFMessageComposeViewControllerDelegate {     var parent: SMSView     init(_ parent:SMSView){         self.parent = parent     } ![]("https://developer.apple.com/forums/content/attachment/e863a009-5a95-4f62-8426-a24844062c60" "title=IMG_0448.jpg;width=1242;height=2208")     func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {         controller.dismiss(animated: true, completion: nil)     } } on modal - 持ち主　is correct number