我目前正在处理通知，但未成功从Firebase FCM收到任何通知。
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Push Notifications激活了Remote Notifications和Background fetches，并且已经在here中阅读了stackoverflow中当前类似的另一个主题
我想与您分享我的AppDelegate代码，但首先，我不得不说Google的推送通知文档似乎有点令人困惑，因为这里有很多替代方法，每个教程都有不同的方法来接收通知。
我已经导入了这些
import Firebase
import FirebaseInstanceID
import UserNotifications
import FirebaseMessaging
然后有代表团
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, MessagingDelegate{
...
}
然后这是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，并且它已成功在服务器端发送，但是当我记录接收到的消息时，收入数据没有任何内容。
如果您问为什么我要在willFinish函数中实现配置，则在文档中会有类似的注释。
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.
对于您的任何帮助，我们将不胜感激，因为目前尚很难确定问题所在。
答案 0 :(得分：2)
我正在使用FirebaseMessaging v4.1.4，并且已启用方法切换
application.registerForRemoteNotifications（）->首先
Messaging.messaging（）。delegate = self->第二
您必须在请求远程通知之后设置消息传递委托。 （我注意到您是在请求许可之前调用它的）
在我的情况下，因为我在iOS 13的didRegisterForRemoteNotificationsWithDeviceToken方法中未收到APNS令牌之前就调用了它，而生成了火力令牌。
也许是因为未生成APNS，并且Firebase没有与APNS令牌映射，所以您可能未收到任何通知。
答案 1 :(得分：1)
请检查您是否在项目功能中激活了推送通知
创建开发APNs证书并将其添加到Firebase控制台项目设置
在您的应用程序委托中
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")
}
}
答案 2 :(得分：1)
他们说 警告：要以这种方式使用FCM直接通道，必须使用旧版HTTP API发送消息。 HTTP v1 API对所有发送到iOS设备的消息使用APN。 你需要把 Messaging.messaging（）。should EstablishmentDirectChannek = true
答案 3 :(得分：1)
我在ios 13设备上有相同的问题。但是在低于ios 13的设备上运行正常。 问题是在iOS 13设备上没有调用didRegisterForRemoteNotificationsWithDeviceToken方法。 经过一番研究，我发现这是由于网络连接问题。然后，我从办公室的wifi切换到了蜂窝网络，此后它开始工作了。 didRegisterForRemoteNotificationsWithDeviceToken返回了设备令牌。
答案 4 :(得分：0)