如何修复：“userNotificationCenter(_:didReceive:withCompletionHandler:) 未调用”？

Question

当我从 Firebase 控制台发送通知时，它会发送到应用程序，但是当我点击通知横幅时，应调用函数

userNotificationCenter(_:didReceive:withCompletionHandler:)

并打印文本“

didReceive method is called

”，但不会出现此类文本。我的代码有什么问题吗？

import SwiftUI
import FirebaseCore
import FirebaseAuth
import UserNotifications
import FirebaseMessaging
import FirebaseFirestore


let screen = UIScreen.main.bounds 


class AppDelegate: NSObject, UIApplicationDelegate {
  func application(_ application: UIApplication,
                   didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
      FirebaseApp.configure()
      Messaging.messaging().delegate = self
      UNUserNotificationCenter.current().delegate = self
      
      UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in
              if granted {
                  print("User notifications are allowed.")
              } else {
                  print("User notifications are not allowed.")
      } }
      application.registerForRemoteNotifications()
      application.applicationIconBadgeNumber = 0

          return true
  }
}


extension AppDelegate: UNUserNotificationCenterDelegate {
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        print("didReceive method is called")
        let userInfo = response.notification.request.content.userInfo
        print("userInfo is ", userInfo)

        if let title = userInfo["title"] as? String,
           let message = userInfo["message"] as? String {
            // Create the PushNotificationView with the received title and message
            let contentView = PushNotificationView(message: message, title: title)
            print("__________________ FUNCTION userNotificationCenter_______________")
            print("Message is: ", message)
            pushMessage = message
            print("Title is: ", title)

            // Get the main window scene
            if let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene {
                // Access the relevant window from the window scene
                if let window = windowScene.windows.first {
                    // Set the root view controller of the window to display the PushNotificationView
                    window.rootViewController = UIHostingController(rootView: contentView)
                }
            }
        } else {
            print("Title and message could not be retrieved")
        }

        completionHandler() // Call the completion handler when finished processing
    }
}


extension AppDelegate: MessagingDelegate {
    
    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        Messaging.messaging().apnsToken = deviceToken
    }
    
    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) {
      print("Firebase registration token: \(String(describing: fcmToken))")

      let dataDict: [String: String] = ["token": fcmToken ?? ""]
      NotificationCenter.default.post(
        name: Notification.Name("FCMToken"),
        object: nil,
        userInfo: dataDict
      )
        if let fcmToken = fcmToken  {
            deviceToken = fcmToken}
      // TODO: If necessary send token to application server.
      // Note: This callback is fired at each app startup and whenever a new token is generated.
    }

}

@main
struct PirouetteApp: App {
    
    // register app delegate
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
    @Environment(\.scenePhase) var scenePhase

    
    var body: some Scene {
        WindowGroup {
            
            if let user = AuthService.shared.currentUser {
                if user.uid == adminID || user.uid == admin2ID {
                    AdminOrderView()
                } else {
                    let viewModel = MainTabBarViewModel(user: user)
                    MainTabBar(viewModel: viewModel)
               
                }
            } else {
                AuthView()
            }
        }
        .onChange(of: scenePhase) { newPhase in
                   if newPhase == .active {
                       // Clear badge count when app becomes active
                       UIApplication.shared.applicationIconBadgeNumber = 0
                   }
               }             
    }
}

我尝试自己做

Answer 1

我发现问题了。该错误与 Xcode 相关。我重新启动了我的笔记本电脑，didReceive 仍然没有被模拟器调用，但它开始在真实设备上工作。