ios - 当用户在前台且应用程序全新安装时，不会调用 willPresent 和 didReceive 通知委托(delegate)

Question

我已经实现了 FirebaseCloudMessaging，当应用程序处于后台时收到通知，但当我安装新的应用程序时willPresent code> 和 didReceive 通知 delegate 在 30 到 35 分钟后不会被调用，它将开始调用。

只有当我通过删除旧应用程序来安装应用程序时才会发生这种情况。

这是我的代码，你可以检查我哪里出错了

import UIKit
import Firebase
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        // Register for push notification
        self.registerForNotification()
        FirebaseApp.configure()
        Messaging.messaging().delegate = self
        return true
    }
}

extension AppDelegate: UNUserNotificationCenterDelegate {

    //MARK: - Register For RemoteNotification
    func registerForNotification() {
        UNUserNotificationCenter.current().delegate = self
        UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .alert, .sound]) { granted, error in }
        UIApplication.shared.registerForRemoteNotifications()
    }

    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        #if DEVELOPMENT
            Messaging.messaging().setAPNSToken(deviceToken, type: .sandbox)
        #else
            Messaging.messaging().setAPNSToken(deviceToken, type: .prod)
        #endif
    }

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

    //MARK: - UNUserNotificationCenterDelegate
    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
        debugPrint(userInfo)
    }

    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

        let userInfo = notification.request.content.userInfo
        debugPrint(userInfo)
        completionHandler([.badge, .alert, .sound])
    }


    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        let userInfo = response.notification.request.content.userInfo
        print(userInfo)
        completionHandler()
    }
}

extension AppDelegate: MessagingDelegate {

    //MARK: - MessagingDelegate
    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
        print(fcmToken)
    }

    func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
        print(remoteMessage.appData)
    }
}

感谢帮助

Answer 1

用此代码替换 registerForNotification 函数代码。也许会有帮助

UNUserNotificationCenter.current().delegate = self
        let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
        UNUserNotificationCenter.current().requestAuthorization(options: authOptions) { (isAllow, error) in

            if isAllow {

                Messaging.messaging().delegate = self

            }

        }

        UIApplication.shared.registerForRemoteNotifications()

当用户允许通知时，将调用此委托(delegate)方法

 func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {

        print(fcmToken)



    }

点击通知时

  func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        //when notification is tapped

    }

当应用程序处于前台时将调用此方法

  func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

        //this method is called when notification is about to appear in foreground

        completionHandler([.alert, .badge, .sound]) // Display notification as

    }