Python Firebase Admin SDK appears successful but I never receive the notification

问题

I'm attempting to use the Python Firebase Admin SDK to send push notifications for my mobile app. I've tested it with the notification composer in the Firebase Console, so I know my device can receive push notifications, but when I try to use the SDK I never receive anything. Nor do I see the notification listed on the Firebase console notification page.

Here's the exact code(minus my personal info) that I'm using to send the notification:

import firebase_admin
from firebase_admin import credentials, messaging

token = "registration token"
creds = credentials.Certificate('path/to/cert.json')
app = firebase_admin.initialize_app(creds)
msg = messaging.Message(data={'title': 'Test'}, token=token)
print(messaging.send(msg, app=app))

This returns a URL that follows the format /project/<project name>/messages/<message ID> but that URL doesn't work for me. It will just redirect me to the Firebase console base domain and a blank screen. Also, the notifications should be listed under /notifications shouldn't they?

回答1:

I had had this problem for a week. But it was resolved. Follow these:

Make sure your APNs Certificates or APNs Authentication Key were uploaded in Cloud Messaging settings in Firebase Console
Sure that you use the correct FCM token when sending a firebase.messaging.Message which included apns (messaging.APNSConfig).
Check your AppDelegate.m file was setup following Firebase Docs. In my case, I forgot add [FIRMessaging messaging].APNSToken = deviceToken; in function application:didRegisterForRemoteNotificationsWithDeviceToken:. Keep in mind that the response when you send a message in your server did not say anything about the push notification to your iOS devices even you received a message (it did not contain a notification). And I also don't know how to check whether notification delivered or not.

My python server code:

def push_notification():
    title = "Your title"
    message = "Your message"
    ntf_data = {"key": "value"}
    fcm_token = "your_fcm_token"
    topic = "your_topic"

    # apns
    alert = ApsAlert(title = title, body = message)
    aps = messaging.Aps(alert = alert, sound = "default")
    payload = messaging.APNSPayload(aps)

    # message
    msg = messaging.Message(
        notification = messaging.Notification(
            title = title,
            body = message
        ),
        data = ntf_data,
        token = fcm_token,
        topic = topic,
        apns = messaging.APNSConfig(payload = payload)
    )

    # send
    res = messaging.send(msg)

And frontend react-native notification listener code:

    onNotificationListener = firebase.notifications().onNotification((notification) => {
         console.log("received notification:", notification)
    }

Feel free to ask if there is any problem in my answer or if you need more information. Happy coding.

回答2:

The return value is a message ID string, and currently it doesn't point to anything (i.e. not a valid URL). It's just the unique ID that FCM has assigned to your notification, and it indicates the notification has been successfully handed off to FCM for delivery. Also, I believe that notifications sent from the SDK do not appear in the Firebase console. You need an actual client (Android, IOS or web) to test this flow end-to-end.

来源：https://stackoverflow.com/questions/53771076/python-firebase-admin-sdk-appears-successful-but-i-never-receive-the-notificatio

标签

python

ios

firebase

firebase-cloud-messaging

firebase-admin