iOS设备上未显示Firebase云消息通知（前台和后台）

Question

我正在使用FCM为我的iOS应用程序创建和发送推送通知。

开发环境：

>

Xcode 11.3

null

问题：

在遇到问题之前，我设置了我的应用程序，使其能够在应用程序处于后台和前台时接收通知。我对自己非常高兴，我promise了代码。在此之后，我无法在前台或后台接收通知。无论使用的通知是从云消息仪表板还是邮递员发送的，我都收到一个成功的响应但通知从未出现。

起初，我认为我可能已经达到通知配额，但现在是2天后的事实。

null

AppDelegate.Swift

import UIKit
import Firebase
import FBSDKCoreKit
import GoogleMaps
import SwiftLocation
import GooglePlaces
import Crashlytics
import GoogleSignIn
import Armchair
import UserNotifications
import FirebaseMessaging

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

    var window: UIWindow?
    var swipeNavigationViewController: SwipeNavigationViewController!

    override init() {
        super.init()

        FirebaseApp.configure()

        Database.database().isPersistenceEnabled = true
        swipeNavigationViewController = SwipeNavigationViewController()
    }

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool  {
        FirebaseConfiguration.shared.setLoggerLevel(.error)
        ApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions)

        // Google Maps
        GMSServices.provideAPIKey(FireBaseConstants.GoogleAPIKey)
        GMSPlacesClient.provideAPIKey(FireBaseConstants.GoogleAPIKey)
        GeocoderRequest.GoogleOptions(APIKey: FireBaseConstants.GoogleAPIKey)

        let navigationViewController = UINavigationController(rootViewController: swipeNavigationViewController)
        navigationViewController.setNavigationBarHidden(true, animated: false)

        self.window?.rootViewController = navigationViewController
        self.window?.makeKeyAndVisible()

        showAlertIfPointedTowardProductionDatabase()
        setupReviewRequest()

        UIApplication.shared.registerForRemoteNotifications()

        let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in
            // If granted comes true you can enabled features based on authorization.
            guard granted else { return }
            DispatchQueue.main.async {
                print("UserID: \(UserManager.sharedManager.currentUser?.userID)")
                let pushManager = PushNotificationManager(userID: "currently_logged_in_user_id")
                pushManager.registerForPushNotifications()
            }
        }

        UNUserNotificationCenter.current().delegate = self

        return true
    }

    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
        let handledByFB = ApplicationDelegate.shared.application(app, open: url, options: options)

        var handledByGoogle = false
        if !handledByFB {
            handledByGoogle = GIDSignIn.sharedInstance().handle(url)
        }

        let handled = handledByFB || handledByGoogle

        return handled
    }

    private func setupReviewRequest() {
        //Code...
    }

    // This method will be called when app received push notifications in foreground
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        completionHandler([.alert, .badge, .sound])
    }
}

PushNotificationManager.Swift

import Foundation
import Firebase
import FirebaseFirestore
import FirebaseMessaging
import UIKit
import UserNotifications

class PushNotificationManager: NSObject, MessagingDelegate, UNUserNotificationCenterDelegate {

    let userID: String
    let gcmMessageIDKey = "gcm.message_id"

    init(userID: String) {
        self.userID = userID
        super.init()
    }

    func registerForPushNotifications() {
        let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]

        UNUserNotificationCenter.current().requestAuthorization(options: authOptions) { (_, error) in
            guard error == nil else{
                print(error!.localizedDescription)
                return
            }
        }

        //get application instance ID
        InstanceID.instanceID().instanceID { (result, error) in
            if let error = error {
                print("Error fetching remote instance ID: \(error)")
            } else if let result = result {
                print("Remote instance ID token: \(result.token)")
            }
        }

        UIApplication.shared.registerForRemoteNotifications()
        updateFirestorePushTokenIfNeeded()
    }

    func updateFirestorePushTokenIfNeeded() {
        if let token = Messaging.messaging().fcmToken {
            //            let usersRef = Firestore.firestore().collection("users_table").document(userID)
            //            usersRef.setData(["fcmToken": token], merge: true)
            print("Remote instance ID token: \(token)")
        }
    }

    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
        print("Firebase registration token: \(fcmToken)")

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

    func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
        print("Received data message: \(remoteMessage.appData)")
    }

    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        print(response)
    }

    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
        if let messageID = userInfo[gcmMessageIDKey] {
            print("Message ID: \(messageID)")
        }

        print(userInfo)
    }

    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print("Unable to register for remote notifications: \(error.localizedDescription)")
    }

    func application(_ application: UIApplication,didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        let tokenParts = deviceToken.map { //data -> String in
            return String(format: "%02.2hhx", $0)
        }

        Messaging.messaging().apnsToken = deviceToken
        Messaging.messaging().setAPNSToken(deviceToken, type: .unknown)
        UserDefaults.standard.synchronize()
    }
}

这是使用以下所有链接设置的（我肯定还有一些其他链接我也忘了）：

null

{
    "multicast_id": 2586780331808083728,
    "success": 1,
    "failure": 0,
    "canonical_ids": 0,
    "results": [
        {
            "message_id": "0:1578532253832479%2b1845e62b1845e6"
        }
    ]
}

云消息传递：

Answer 1

我通过搬家来解决这个问题

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)

从PushNotificationManager到AppDelegate。希望这能帮助别人！