iOS FCM推送通知不能在后台快速工作？

Posted 2023-02-24

【中文标题】iOS FCM推送通知不能在后台快速工作？

【英文标题】：iOS FCM Push notifications not working in background state in swift?

【发布时间】：2018-03-22 07:53:16

【问题描述】：

在我的应用程序中，我实现了 FCM 推送通知。当使用 FCM 控制台和 pushtry.com 网站检查通知时，它工作正常，然后我尝试使用实际的服务器 API，前台通知运行良好，但后台通知没有收到，有时它很少收到，而且也没有横幅和声音。请帮助找出问题。

在这里我附上了我正在尝试的代码..

import UIKit
import UserNotifications
import Firebase

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate 

var window: UIWindow?

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

Messaging.messaging().delegate = self
if #available(ios 10.0, *) 
    UNUserNotificationCenter.current().delegate = self

    let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
    UNUserNotificationCenter.current().requestAuthorization(
        options: authOptions,
        completionHandler: _, _ in )
 else 
    let settings: UIUserNotificationSettings =
        UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
    application.registerUserNotificationSettings(settings)


application.registerForRemoteNotifications()
return true

func application(_ application: UIApplication, 
didReceiveRemoteNotification userInfo: [AnyHashable: Any]) 

print(userInfo)

func applicationDidBecomeActive(_ application: UIApplication)

    Messaging.messaging().shouldEstablishDirectChannel = true

    application.applicationIconBadgeNumber = 0;


func applicationDidEnterBackground(_ application: UIApplication)

    Messaging.messaging().shouldEstablishDirectChannel = false
    print("Disconnected from FCM.")

func application(_ application: UIApplication, 
didReceiveRemoteNotification userInfo: [AnyHashable: Any],
             fetchCompletionHandler completionHandler: @escaping 
(UIBackgroundFetchResult) -> Void) 

print(userInfo)

completionHandler(UIBackgroundFetchResult.newData)

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

func application(_ application: UIApplication, 
didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) 
print("APNs token retrieved: \(deviceToken)")




@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate 

func userNotificationCenter(_ center: UNUserNotificationCenter,
                        willPresent notification: UNNotification,
                        withCompletionHandler completionHandler: 
@escaping (UNNotificationPresentationOptions) -> Void) 
let userInfo = notification.request.content.userInfo
  print(userInfo)

completionHandler([])


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

completionHandler()



extension AppDelegate : MessagingDelegate 
func messaging(_ messaging: Messaging, didRefreshRegistrationToken 
fcmToken: String) 
  print("Firebase registration token: \(fcmToken)")

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

这里分享一下服务器推送通知的请求格式：

"to":"cerGBjsmtzE:APA91bFk- 
 6ZI4ehaWbg0bGSGzAh10NeUh3AcyEFq7dASU7W4YY4WL8vWCA5wav- 
 LTYc0xTGWHev8Z99",
 "priority":"high",
"data":
  
    "title":"New Inspection scheduled",
    "body":"You have a new Inspection Request scheduled,
    "sound":"default"
  

【问题讨论】：

FCM Push notification not working in iOS 11的可能重复

如果您知道答案的意思，请不要做出负面评价或重复

但这不是我的问题兄弟，***.com/questions/47234355/…

确保您已在后台模式下启用远程通知 --- 在 XCODE 的功能部分。

B.Saravana Kumar，我已经告诉过重复评论有你需要的所有信息

【参考方案1】：

确保您在后台模式下选择了远程设置 --- 在 XCODE 的功能部分下

【参考方案2】：

要在后台模式下接收推送通知，您的有效负载格式中必须存在具有值 "1" 或 true 的 "mutable-content" 键。

请告诉您，后端开发人员，添加该密钥。 请检查以下有效载荷格式

   "to": "dWB537Nz1GA:APA91bHIjJ5....",
   "content_available": true,
   "mutable_content": true,

   "data":
   
      "message": "Offer!",
      "mediaUrl": "https://upload.wikimedia.org/wikipedia/commons/thumb/2/2a/FloorGoban.JPG/1024px-FloorGoban.JPG"
   ,

   "notification":
   
      "body": "Enter your message",
      "sound": "default"
   

您可以参考以下链接 https://firebase.google.com/docs/cloud-messaging/concept-options

【讨论】：

我想在哪里添加那个键兄弟。

您的有效负载格式中也缺少通知键

请查看我的回答

在后端他们使用关键的“数据”而不是“通知”，这是否是正确的请求？

不，安卓人需要数据密钥，ios人需要通知