为什么我向主题发送 Firebase 通知的请求不起作用（HTTP POST）？

Question

非常感谢您对此的任何帮助.. 我要做的就是使用我的 php 代码向订阅“全球”主题的所有用户发送通知。有谁知道为什么它可能不起作用？因为我希望每个使用该应用程序的人都能收到通知，所以我会订阅每个人（除非有更好的方法）。这是我的 php 尝试将通知发送到我的全局主题：

<?php
    define( 'API_ACCESS_KEY', 'hidden...hidden' );

    $msg = array
    (
        'message'   => 'here is a message. message',
        'title'     => 'This is a title. title',
        'vibrate'   => 1,
        'sound'     => 1
    );

    $fields = array
    (
        'to'            => "/topics/global",
        'data'          => $msg,
        'priority'      => 'high'
    );

    $headers = array
    (
        'Authorization: key=' . API_ACCESS_KEY,
        'Content-Type: application/json'
    );

    $ch = curl_init();
    curl_setopt( $ch,CURLOPT_URL, 'https://android.googleapis.com/gcm/send' );
    curl_setopt( $ch,CURLOPT_POST, true );
    curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers );
    curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
    curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );
    curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $fields ) );

    $result = curl_exec( $ch );
    curl_close( $ch );
    echo $result;
?>

我缺乏知识，但从 $result 回显来看，它看起来不像任何失败消息。这是我得到的：

{"message_id":7591682951632927615}

在我的 Firebase 控制台中，我什至看不到“全局”主题，因此我无法测试发送到该主题的功能在我的设备上是否有效。从我在线阅读的内容来看，订阅的主题可能需要一段时间才能出现在控制台中。 澄清一下，在控制台中使用设置为应用程序的用户段向所有设备发送通知！

我可以做些什么来验证我的应用实际上是在为用户订阅“全球”主题吗？也许这就是问题所在。以下是相关的 swift 代码：

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

    FIRApp.configure()

    if #available(iOS 10.0, *) {
        let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
        UNUserNotificationCenter.current().requestAuthorization(
            options: authOptions,
            completionHandler: {_, _ in })

        // For iOS 10 display notification (sent via APNS)
        UNUserNotificationCenter.current().delegate = self
        // 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()

    return true
}


func applicationReceivedRemoteMessage(_ remoteMessage: FIRMessagingRemoteMessage) {
    print("applicationReceivedRemoteMessage")
}


func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    if let refreshedToken = FIRInstanceID.instanceID().token() {
        print("InstanceID token: \(refreshedToken)")
        FIRMessaging.messaging().subscribe(toTopic: "/topics/global")
    }
}


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.

    /*
     // 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.

    if application.applicationState == UIApplicationState.active {

        print("GOT IN HERE")

        var pushNotificationMessage = ""
        if let aps = userInfo["aps"] as? NSDictionary {
            if let alert = aps["alert"] as? NSDictionary {
                if let message = alert["message"] as? NSString {
                    pushNotificationMessage = message as String
                }
            } else if let alert = aps["alert"] as? NSString {
                pushNotificationMessage = alert as String
            }
        }

        let notificationAlert = UIAlertController(title: nil, message: pushNotificationMessage, preferredStyle: .alert)

        let defaultAction = UIAlertAction(title: "OK", style: .default, handler: {
            (alert: UIAlertAction!) -> Void in
        })
        defaultAction.setValue(Constants.activePushNotificationOKColor, forKey: "titleTextColor")

        notificationAlert.addAction(defaultAction)
        self.window?.rootViewController?.present(notificationAlert, animated: true, completion: nil)
    }
}

Answer 1

要发送notification，请将参数存储在notification，而不是数据：

$fields = array
(
    'to'            => "/topics/global",
    'notification'  => $msg, // <= CHANGED
    'priority'      => 'high'
);

另请参阅Notification payload support 文档中的表 2a。不支持message，请改用body。

$msg = array
(
    'body'      => 'here is a message. message', // <= CHANGED
    'title'     => 'This is a title. title',
    'vibrate'   => 1,
    'sound'     => 1
);