I had read that not to add notification node in the body of the request, and I tried to send without notification node but it seems that the message not received but when I add the notification node it work well
So, what is the difference notification node and data node in Firebase cloud messaging?
{
"to": "/topics/some_topic",
"data": {
"key_1" : "some_value",
"key_2" : "some_value"
},
"notification":{
"body" : "some_message"
}
}
Is there any link to doc I can read ?
The data node is used for sending notification if the application is on the background/foreground and in some phones if it is also killed.
The notification node is used for sending notification if the application is on the foreground. If it is in the background you wont receive the notification.
The best option I found is to use data node alone.
Also it is explained very well in this link: The FCM messages types
Notification node (a.k.a Notification messages)
When sent, this will receive a notification on the device, regardless of whether the app is in foreground/background/terminated state, but the notification will be shown only when the app is not in foreground. You can bundle a data payload with this of upto 4 KB. The upside is that you do not have to worry about generating a notification every time, the libraries take care of that. The downside is that there is no way not to show the notifications, for eg when you want to do something silently.
Data node (a.k.a Data messages)
When sent, this will fire up all the same callbacks as a normal notification node would, the only difference being that a notification won't pop up on its own, you are the master of your own callback! This is useful for when you want to do something silently, like refresh the cache, update the database etc. As a data node will have the data payload and will fire up a callback at any state of the app, you can generate a notification on your own and fire it up. This gives you the freedom to design your notification however you want!
Related
Thanks to Firebase and FlutterFire, it's easy to send regular notifications from the servers to the users' devices. Those notifications include a title, a body, and an image url. But what about creating a no-that-simple notification, like Telegram's or WhatsApp's?
The simple question is to avoid sending a Notification from the server, and instead set the data field to the push message. But according to the FlutterFire documentation:
Data only messages are considered low priority by devices when your application is in the background or terminated, and will be ignored
So, it sounds like if we want to have a reliable delivery system, we should add a Notification to our push messages. But that notification is so simple. And, again, according to the documentation:
If your message is a notification one (includes a notification property), the Firebase SDKs will intercept this and display a visible notification to your users (assuming you have requested permission & the user has notifications enabled)
So: If I want a reliable system, I have to send Notifications, but I do it, I can't tell FlutterFire to use my custom notifications.
So the question is: how to show custom notifications with FlutterFire?
What I want to achieve is something like this:
I'm going to try setting the priority of the push notification.
You can however explicitly increase the priority by sending additional properties on the FCM payload:
On Android, set the priority field to high.
On Apple (iOS & macOS), set the content-available field to true.
On the server side code, it looks like:
message.setAndroidConfig(AndroidConfig.builder().setPriority(AndroidConfig.Priority.HIGH).build());
message.setApnsConfig(ApnsConfig.builder().setAps(Aps.builder().setContentAvailable(true).build()).build());
In Urban Airship, when I am composing a notification, I can target specific users by searching for a Urban Airship channel_id (device ID):
I sent from Urban Airship the push notification that I am showing above, and I received it successfully. Now I want to do the same thing, send a push notification to a specific device, but now using the Firebase console. The problem is that in Firebase, in the step where I need to specify the target, it only allows me to choose User segment or topic. I was expecting to see a third option: Target specific users (for sending notifications to one or many specific GCM/FCM device token IDs. So my alternative is to add a GCM/FCM device token ID to a topic and then send the push notification to that topic, which is something that I have successfully done before. Nonetheless, that would be a workaround and not the way I would prefer to do this. Is it possible to send push notifications to specific users (by defining the target GCM/FCM device token IDs) from the Firebase console? Thank you.
UPDATE 1: See how the Firebase console (https://console.firebase.google.com/) only shows User segment and Topic as the Target:
First Step:
Second Step:
Third Step:
By design, the notification feature in the console is for sending out broadcast-type events. Sending user-specific alerts would be more of a programmatic operation done through the API.
For sending test messages, there is a console tool for this, explained here.
Note that it is possible to send a notification to one device by subscribing a device to any topic and sending the notification to that topic in the console (keep in mind topics are public and you can't prevent users from signing up to them; fine for testing most likely).
Another alternative is to send a message via HTTP or curl. Perhaps the best resource for this is the quickstart/messaging example.
Im using inoic with cordova-plugin-fcm
There's any way to handle when user dismiss a notification, because I need to do store some data when a notification arrives.
tks for any help.
There are two types of messages that you can send with FCM:
notification messages, which are primarily meant to be displayed to the user.
data messages, which are handled by your application code.
If you send a notification messages, then your code can handle the message while the app is active. But if your app is not active, the message is handled by the system and displayed to the user. Your code is not invoked in this case.
If you send a data message, it is always handled by your code. For your use-case, these sound like the better match.
When my Ionic app is in foreground, notification arrives perfectly.
When my Ionic app is in background, the Firebase push notification displays the a system tray notification. Pressing the banner opens the app and the notification fires. I am completely fine with that.
But, if user decides to open the app without clicking the banner, the notification doesn't trigger. Anytime clicking the banner results into the arrival of the notification into the app.
How can I resolve this situation? How can I make the notification fire, regardless of whether the app is clicked from notification tray or normally?
Edit:
The firebase data message I'm sending looks like this :
{
"data":{
"fieldA":"A",
"fieldB" : "B",
"fieldC" : "C",
"total" : 1234,
"title" : "_my_title",
"message" : "_my_message",
"sound" : "default",
"cick_action": "FCM_PLUGIN_ACTIVITY"
},
"to":"/topics/MY_TOPIC",
"priority":"high"
}
Make sure the notification you send is of type data message, not display messages.
With FCM, you can send two types of messages to clients:
Notification messages, sometimes thought of as "display messages."
These are handled by the FCM SDK automatically.
Data messages, which
are handled by the client app.
https://firebase.google.com/docs/cloud-messaging/concept-options
Also
When in the background, apps receive the notification payload in the
notification tray, and only handle the data payload when the user taps
on the notification. When in the foreground, your app receives a
message object with both payloads available.
And
To receive messages, use a service that extends
FirebaseMessagingService. Your service should override the
onMessageReceived and onDeletedMessages callbacks.
https://firebase.google.com/docs/cloud-messaging/android/receive
I'm developing an app using Firebase, in the app there are groups and for groups there are multiple members. I want to send notifications to members in a particular group based on one of the users activity. As an example in a chat app, notification to others informing there is a new message.
I referred this blog post. As it seems best way to do this is Firebase Topic Messaging, all members can be subscribed to the group id as a topic.
My matter is how to avoid receiving notification to the member who's action causes to the notification.
I tried Firebase message sending to multiple topics but it only allows for two logical operations (&&, ||)
Firebase Cloud Messaging has two types of messages: notification messages and data messages.
The default behavior of Firebase is that notification messages will automatically be displayed if the app is in the background or not running. This behavior cannot be modified. If the app is in the foreground, the notification message will not be automatically shown, it will instead be delivered to your app's code.
Data messages on the other hand will always be delivered to your app's code.
Since the user sending the message will typically have the app open, the default behavior will automatically ensure the notification is not shown on the sending user's device.
But in the blog post you refer to there is a race condition for this. If the user closes the app between the time they send the notification to the server and the time the server sends out the notification, the notification may show on their device too.
If this is a concern for your app, you should not use a notification message. Use a data message instead and include enough information in the message to detect which user has sent it (e.g. the user's uid).