如何在應用程序啓動後爲用戶訂閱通知的主題？

我正在使用HTTP POST將通知發送給應用上的所有用戶。要做到這一點，我有一個主題訂閱稱爲「全球」。我希望每個用戶都能自動訂閱此主題以確保他們獲得通知（假設他們已啓用通知）。如何在應用程序啓動後爲用戶訂閱通知的主題？

在我的代碼中，我應該將訂閱放在哪裏以確保它們始終會訂閱？我的恐懼是，我把它放在一個錯誤的地方，他們永遠不會被訂閱。我嘗試在didFinishLaunchingWithOptions結尾處訂閱，但它看起來在這裏執行它爲時過早（我想因爲用戶可能沒有接受通知提示呢？）。

目前預訂是在didRegisterForRemoteNotificationsWithDeviceToken但是這不會被調用的第一個應用程序運行，從而爲它工作，我需要運行的應用程序進行第二次......這是我在AppDelegate的相關代碼：

import UIKit 
import Firebase 
import FirebaseMessaging 
import UserNotifications 

@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, FIRMessagingDelegate { 

var window: UIWindow? 


func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { 

    FIRApp.configure() 

    if #available(iOS 10.0, *) { 
     let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound] 
     UNUserNotificationCenter.current().requestAuthorization(
      options: authOptions, 
      completionHandler: {_, _ in }) 

     // For iOS 10 display notification (sent via APNS) 
     UNUserNotificationCenter.current().delegate = self 
     // For iOS 10 data message (sent via FCM) 
     FIRMessaging.messaging().remoteMessageDelegate = self 

    } else { 
     let settings: UIUserNotificationSettings = 
      UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil) 
     application.registerUserNotificationSettings(settings) 
    } 

    application.registerForRemoteNotifications() 

    return true 
} 



func applicationReceivedRemoteMessage(_ remoteMessage: FIRMessagingRemoteMessage) { 
    print("applicationReceivedRemoteMessage") 
} 



func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) { 
    if let refreshedToken = FIRInstanceID.instanceID().token() { 
     print("InstanceID token: \(refreshedToken)") 
     FIRMessaging.messaging().subscribe(toTopic: "/topics/global") 
    } 
} 



@available(iOS 10.0, *) 
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) { 
    completionHandler(UNNotificationPresentationOptions.alert) 
} 



func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) { 
    // If you are receiving a notification message while your app is in the background, 
    // this callback will not be fired till the user taps on the notification launching the application. 
} 



func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) { 
    // If you are receiving a notification message while your app is in the background, 
    // this callback will not be fired till the user taps on the notification launching the application. 
}

來源

2017-05-23 Jason Fel

您需要在兩個地方訂閱主題。

緊跟在FIRApp.configure（）之後。同時更新Firebase iOS SDK版本。似乎你有一箇舊版本。

根據新版本（FirebaseMessaging 2.0.1）。

if Messaging.messaging().fcmToken != nil { 
    Messaging.messaging().subscribe(toTopic: 「foo」) 
}

然後第二個當標記刷新。

func messaging(_ messaging: Messaging, didRefreshRegistrationToken fcmToken: String) { 
    Messaging.messaging().subscribe(toTopic: 「foo」) 
}

以下是原始答案的鏈接。檢查提供者提供的答案。

https://github.com/firebase/quickstart-ios/issues/307

來源

2017-08-17 23:10:50

井火力地堡消息4.0.4將它添加到didRegisterForRemoteNotificationsWithDeviceToken方法，這將完成剩下的

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) { 
     Messaging.messaging().apnsToken = deviceToken 
     Messaging.messaging().subscribe(toTopic: hubId) 
    }

來源

2017-11-07 07:28:17

如何在應用程序啓動後爲用戶訂閱通知的主題？

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