在 Apple 應用程式中接收訊息

一旦您的客戶端應用程式安裝在裝置上，它就可以透過 FCM APNs 介面接收訊息。您可以立即開始使用通知編輯器向用戶群組發送通知，或在應用程式伺服器上建立訊息。

處理警報通知

FCM 透過 APN 傳送針對 Apple 應用程式的所有訊息。要了解有關透過 UNUserNotificationCenter 接收 APNs 通知的更多信息，請參閱 Apple 關於處理通知和通知相關操作的文檔。

您必須設定UNUserNotificationCenter 委託並實作適當的委託方法才能從 FCM 接收顯示通知。

迅速


extension AppDelegate: UNUserNotificationCenterDelegate {
  // Receive displayed notifications for iOS 10 devices.
  func userNotificationCenter(_ center: UNUserNotificationCenter,
                              willPresent notification: UNNotification) async
    -> UNNotificationPresentationOptions {
    let userInfo = notification.request.content.userInfo

    // With swizzling disabled you must let Messaging know about the message, for Analytics
    // Messaging.messaging().appDidReceiveMessage(userInfo)

    // ...

    // Print full message.
    print(userInfo)

    // Change this to your preferred presentation option
    return [[.alert, .sound]]
  }

  func userNotificationCenter(_ center: UNUserNotificationCenter,
                              didReceive response: UNNotificationResponse) async {
    let userInfo = response.notification.request.content.userInfo

    // ...

    // With swizzling disabled you must let Messaging know about the message, for Analytics
    // Messaging.messaging().appDidReceiveMessage(userInfo)

    // Print full message.
    print(userInfo)
  }
}

AppDelegate.swift

Objective-C

// Receive displayed notifications for iOS 10 devices.
// Handle incoming notification messages while app is in the foreground.
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
       willPresentNotification:(UNNotification *)notification
         withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {
  NSDictionary *userInfo = notification.request.content.userInfo;

  // With swizzling disabled you must let Messaging know about the message, for Analytics
  // [[FIRMessaging messaging] appDidReceiveMessage:userInfo];

  // ...

  // Print full message.
  NSLog(@"%@", userInfo);

  // Change this to your preferred presentation option
  completionHandler(UNNotificationPresentationOptionBadge | UNNotificationPresentationOptionAlert);
}

// Handle notification messages after display notification is tapped by the user.
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
didReceiveNotificationResponse:(UNNotificationResponse *)response
         withCompletionHandler:(void(^)(void))completionHandler {
  NSDictionary *userInfo = response.notification.request.content.userInfo;
  if (userInfo[kGCMMessageIDKey]) {
    NSLog(@"Message ID: %@", userInfo[kGCMMessageIDKey]);
  }

  // With swizzling disabled you must let Messaging know about the message, for Analytics
  // [[FIRMessaging messaging] appDidReceiveMessage:userInfo];

  // Print full message.
  NSLog(@"%@", userInfo);

  completionHandler();
}

AppDelegate.m

如果您想要為通知新增自訂操作，請在通知負載中設定click_action參數。使用您將用於 APNs 負載中的category鍵的值。自訂操作必須先註冊才能使用。有關詳細信息，請參閱 Apple 的本地和遠端通知程式設計指南。

若要深入了解向您的應用程式發送的訊息，請參閱FCM 報告儀表板，該儀表板記錄Apple 和Android 裝置上發送和開啟的訊息數，以及Android 應用程式的「印象數」（使用者看到的通知）數據。

處理靜默推播通知

當使用content_available鍵（相當於 APNs 的content-available發送訊息時，訊息將以靜默通知的形式傳遞，在後台喚醒您的應用程式以執行後台資料刷新等任務。與前台通知不同，這些通知必須透過application(_:didReceiveRemoteNotification:fetchCompletionHandler:)方法。

實作application(_:didReceiveRemoteNotification:fetchCompletionHandler:)如下所示：

迅速

func application(_ application: UIApplication,
                 didReceiveRemoteNotification userInfo: [AnyHashable: Any]) async
  -> UIBackgroundFetchResult {
  // 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

  // With swizzling disabled you must let Messaging know about the message, for Analytics
  // Messaging.messaging().appDidReceiveMessage(userInfo)

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

  // Print full message.
  print(userInfo)

  return UIBackgroundFetchResult.newData
}

AppDelegate.swift

Objective-C

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
    fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
  // 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

  // With swizzling disabled you must let Messaging know about the message, for Analytics
  // [[FIRMessaging messaging] appDidReceiveMessage:userInfo];

  // ...

  // Print full message.
  NSLog(@"%@", userInfo);

  completionHandler(UIBackgroundFetchResultNewData);
}
AppDelegate.m

Apple 平台不保證後台通知的傳送。若要了解可能導致後台通知失敗的情況，請參閱 Apple 的文檔：將後台更新推播到您的應用程式。

解釋通知訊息負載

通知訊息的有效負載是鍵和值的字典。透過 APNs 發送的通知訊息遵循 APNs 負載格式，如下所示：

  {
    "aps" : {
      "alert" : {
        "body" : "great match!",
        "title" : "Portugal vs. Denmark",
      },
      "badge" : 1,
    },
    "customKey" : "customValue"
  }

在停用方法調配的情況下處理訊息

預設情況下，如果您將應用程式的應用程式委託類別指派給UNUserNotificationCenter和Messaging委託屬性，FCM 將混合您的應用程式委託類，以自動將您的FCM 令牌與裝置的APNs 令牌關聯，並將收到通知的事件傳遞到Analytics。如果您明確停用方法調配，如果您正在建立 SwiftUI 應用程序，或者如果您為任一委託使用單獨的類，則您將需要手動執行這兩項任務。

若要將 FCM 令牌與裝置 APNs 令牌相關聯，請透過apnsToken屬性將 APNs 令牌傳遞到應用程式委託的令牌刷新處理程序中的Messaging類別。

迅速

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

Objective-C

- (void)application:(UIApplication *)application
    didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
  [FIRMessaging messaging].APNSToken = deviceToken;
}

若要將通知接收資訊傳遞給 Analytics，請使用appDidReceiveMessage(_:)方法。

迅速

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

  Messaging.messaging().appDidReceiveMessage(userInfo)

  // Change this to your preferred presentation option
  completionHandler([[.alert, .sound]])
}

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

  Messaging.messaging().appDidReceiveMessage(userInfo)

  completionHandler()
}

func application(_ application: UIApplication,
didReceiveRemoteNotification userInfo: [AnyHashable : Any],
   fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
  Messaging.messaging().appDidReceiveMessage(userInfo)
  completionHandler(.noData)
}

Objective-C

- (void)userNotificationCenter:(UNUserNotificationCenter *)center
       willPresentNotification:(UNNotification *)notification
         withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler {
  NSDictionary *userInfo = notification.request.content.userInfo;

  [[FIRMessaging messaging] appDidReceiveMessage:userInfo];

  // Change this to your preferred presentation option
  completionHandler(UNNotificationPresentationOptionBadge | UNNotificationPresentationOptionAlert);
}

- (void)userNotificationCenter:(UNUserNotificationCenter *)center
didReceiveNotificationResponse:(UNNotificationResponse *)response
         withCompletionHandler:(void(^)(void))completionHandler {
  NSDictionary *userInfo = response.notification.request.content.userInfo;

  [[FIRMessaging messaging] appDidReceiveMessage:userInfo];

  completionHandler();
}

- (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler {
  [[FIRMessaging messaging] appDidReceiveMessage:userInfo];
  completionHandler(UIBackgroundFetchResultNoData);
}