当前台用户和应用程序全新安装时，不会调用 willPresent 和 didReceive 通知委托

Question

我已经实现了FirebaseCloudMessaging，当应用程序位于Background 时得到notifications，但是当我安装新应用程序willPresent 和didReceive 通知delegate 30 到35 分钟后不会被调用开始打电话。

只有当我通过删除旧的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，你可以检查我做错的地方

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)
    }
}

感谢您的帮助

Answer 1

用这个替换 registerForNotification 功能代码。也许会有所帮助

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

    }

应用在前台时会调用该方法

  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

    }