Firebase通知未显示IOS,但消息显示在控制台上

Question

我在IOS设备上使用Firebase推送通知时遇到问题.我从firebase控制台发送消息,我在日志中得到它,但它没有在我尝试过的设备上显示任何通知.

我一直在寻找有类似问题的帖子,我已经尝试了我找到的所有内容,但它仍然无效.

我在firebase上创建了项目,下载了google服务信息文件并将其放在项目的根目录上,在xcode上打开通知,将消息的优先级设置为高,并进行了一些更改.

我还在podfile中添加了"Firebase/Core"和"Firebase/Messaging".

现在我正在使用Firebase为您提供的示例.这是我的代码.

import UIKit
import UserNotifications

import Firebase
import FirebaseInstanceID
import FirebaseMessaging

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  var window: UIWindow?
  let gcmMessageIDKey = "gcm.message_id"

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

// Register for remote notifications. This shows a permission dialog on first run, to
// show the dialog at a more appropriate time move this registration accordingly.
// [START register_for_notifications]
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)
  FIRMessaging.messaging().remoteMessageDelegate = self

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

application.registerForRemoteNotifications()

// [END register_for_notifications]

FIRApp.configure()

// [START add_token_refresh_observer]
// Add observer for InstanceID token refresh callback.
NotificationCenter.default.addObserver(self,
    selector: #selector(self.tokenRefreshNotification),
    name: .firInstanceIDTokenRefresh,
    object: nil)
// [END add_token_refresh_observer]

return true
  }

  // [START receive_message]
  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.
// TODO: Handle data of notification

// Print message ID.
if let messageID = userInfo[gcmMessageIDKey] {
  print("Message ID: \(messageID)")
}

// Print full message.
print(userInfo)
  }

  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.
// TODO: Handle data of notification

// Print message ID.
if let messageID = userInfo[gcmMessageIDKey] {
  print("Message ID: \(messageID)")
}

// Print full message.
print(userInfo)

completionHandler(UIBackgroundFetchResult.newData)
  }
  // [END receive_message]

  // [START refresh_token]
  func tokenRefreshNotification(_ notification: Notification) {
if let refreshedToken = FIRInstanceID.instanceID().token() {
  print("InstanceID token: \(refreshedToken)")
}

// Connect to FCM since connection may have failed when attempted before having a token.
connectToFcm()
  }
  // [END refresh_token]

  // [START connect_to_fcm]
  func connectToFcm() {
// Won't connect since there is no token
guard FIRInstanceID.instanceID().token() != nil else {
  return;
}

// Disconnect previous FCM connection if it exists.
FIRMessaging.messaging().disconnect()

FIRMessaging.messaging().connect { (error) in
  if error != nil {
    print("Unable to connect with FCM. \(error)")
  } else {
    print("Connected to FCM.")
  }
}
  }
  // [END connect_to_fcm]

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

  // This function is added here only for debugging purposes, and can be removed if swizzling is enabled.
  // If swizzling is disabled then this function must be implemented so that the APNs token can be paired to
  // the InstanceID token.
  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
print("APNs token retrieved: \(deviceToken)")

// With swizzling disabled you must set the APNs token here.
 FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.sandbox)
  }

  // [START connect_on_active]
  func applicationDidBecomeActive(_ application: UIApplication) {
connectToFcm()
  }
  // [END connect_on_active]

  // [START disconnect_from_fcm]
  func applicationDidEnterBackground(_ application: UIApplication) {
// FIRMessaging.messaging().disconnect()
// print("Disconnected from FCM.")
  }
  // [END disconnect_from_fcm]
}

// [START ios_10_message_handling]
@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {

  // Receive displayed notifications for iOS 10 devices.
  func userNotificationCenter(_ center: UNUserNotificationCenter,
                          willPresent notification: UNNotification,
withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
let userInfo = notification.request.content.userInfo
// Print message ID.
if let messageID = userInfo[gcmMessageIDKey] {
  print("Message ID: \(messageID)")
}

// Print full message.
print(userInfo)
// Change this to your preferred presentation option
completionHandler([.alert,.badge,.sound])

  }

func userNotificationCenter(_ center: UNUserNotificationCenter,
                          didReceive response: UNNotificationResponse,
                          withCompletionHandler completionHandler: @escaping () -> Void) {
let userInfo = response.notification.request.content.userInfo
// Print message ID.
if let messageID = userInfo[gcmMessageIDKey] {
  print("Message ID: \(messageID)")
}

// Print full message.
print(userInfo)

completionHandler()
  }
}
// [END ios_10_message_handling]

// [START ios_10_data_message_handling]
extension AppDelegate : FIRMessagingDelegate {
  // Receive data message on iOS 10 devices while app is in the foreground.
  func applicationReceivedRemoteMessage(_ remoteMessage: FIRMessagingRemoteMessage) {
print(remoteMessage.appData)
}
}
// [END ios_10_data_message_handling]

Answer 1

该应用程序需要位于后台才能显示。