FCM iOS推送通知无法接收任何通知

我目前正在处理通知，但尚未成功从Firebase FCM获得任何通知。

podfile配置为：

target 'Project' do
# Comment the next line if you're not using Swift and don't want to use dynamic frameworks
use_frameworks!
# Pods for Project
pod 'Firebase/Core'
pod 'Firebase/Messaging'
end

我已经从Background fetches激活了Push Notifications和Remote Notifications，并且已经阅读了stackoverflow中当前类似的另一个主题，在这里是

我想和大家分享我的AppDelegate代码，但首先我必须说，谷歌推送通知的文档似乎有点令人困惑，因为这里有太多被高估的方法，每个教程都有不同的方式来接收通知。

我已经进口了这些

import Firebase
import FirebaseInstanceID
import UserNotifications
import FirebaseMessaging

然后是代表团

class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, MessagingDelegate{
...
}

然后是willFinishLaunchWithOptions方法

func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
FirebaseApp.configure()
Messaging.messaging().delegate = self

if #available(iOS 10.0, *) {
// For iOS 10 display notification (sent via APNS)
UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(
options: authOptions,
completionHandler: {_, _ in })
// For iOS 10 data message (sent via FCM
} else {
let settings: UIUserNotificationSettings =
UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
application.registerUserNotificationSettings(settings)
}
application.registerForRemoteNotifications()

return true
}

这是Messaging的委托函数。

func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
print("MEssage ->  (remoteMessage.appData)")
}
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
print("Firebase registration token: (fcmToken)")
}

该功能在Firebase文档中用于设置apns令牌。

func application(application: UIApplication,
didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
Messaging.messaging().apnsToken = deviceToken as Data
}

我已经从FCM发送了数百个通知，它在服务器端成功发送，但当我记录收到的消息时，没有任何收入数据。

如果你问我为什么在willFinish函数中实现配置，文档中有这样的注释。

For devices running iOS 10 and above, you must assign the
UNUserNotificationCenter's delegate property and FIRMessaging's 
delegate property. For example, in an iOS app, assign it in the 
applicationWillFinishLaunchingWithOptions: or 
applicationDidFinishLaunchingWithOptions: method of the app delegate.

我很感激你的任何帮助，因为现在很难看出它出了什么问题。

请检查您是否已在项目功能中激活推送通知
创建开发APN证书并将其添加到Firebase控制台项目设置

在您的应用程序代理

import FirebaseMessaging
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, 
UNUserNotificationCenterDelegate, MessagingDelegate {
var window: UIWindow?

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.

//REMOTE NOTIFICATION
if #available(iOS 10.0, *) {
// For iOS 10 display notification (sent via APNS)
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()
Messaging.messaging().delegate = self
let token = Messaging.messaging().fcmToken
print("FCM token: (token ?? "")")

//Added Code to display notification when app is in Foreground
if #available(iOS 10.0, *) {
UNUserNotificationCenter.current().delegate = self
} else {
// Fallback on earlier versions
}

return true
}

func application(_ application: UIApplication,
didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
Messaging.messaging().apnsToken = deviceToken as Data
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
// Print full message.
print(userInfo)
}
// This method will be called when app received push notifications in foreground
@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
{ completionHandler([UNNotificationPresentationOptions.alert,UNNotificationPresentationOptions.sound,UNNotificationPresentationOptions.badge])
}

// MARK:- Messaging Delegates
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
InstanceID.instanceID().instanceID { (result, error) in
if let error = error {
print("Error fetching remote instange ID: (error)")
} else if let result = result {
print("Remote instance ID token: (result.token)")
}
}
}

func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
print("received remote notification")
}

}

我使用的是FirebaseMessaging v4.4.4版，并已启用方法swizzling

application.registerForRemoteNotifications((-->第一个

Messaging.Messaging((.delete=self-->第二个

您必须在请求远程通知后设置消息代理。(我注意到你在请求许可之前打电话给它(

在我的情况下，因为我之前调用了它，所以我在iOS 13的didRegisterForRemoteNotificationsWithDeviceToken方法中没有收到APNS令牌，而firebase令牌是生成的。

也许是因为没有生成APNS，也没有使用APNS令牌映射firebase，所以您可能没有收到任何通知。

他们说注意：要以这种方式使用FCM直接通道，必须使用传统的HTTP API发送消息。HTTP v1 API对发送到iOS设备的所有消息使用APN。你需要把Messaging.Messaging((.huldEstablishedDirectChannek=真

我在ios 13设备上遇到了同样的问题。但它在低于ios 13的设备上运行良好。问题是没有在ios 13设备上调用didRegisterForRemoteNotificationsWithDeviceToken方法。经过一些研究，我发现这是由于网络连接问题。然后我从办公室的无线网络切换到蜂窝网络，然后它就工作了。didRegisterForRemoteNotificationsWithDeviceToken返回了设备令牌。

我在这里回答了一个类似的问题。

关键的一步是使"；推送通知"；在能力方面。

祝大家编码愉快！

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