I couldn't deploy Firebase cloud function because it is now available to only Blaze plan user which is paid now.
I want to send an automated notification whenever a new document is added in Firebase's collection.
Is there any alternative approach?
Related
I have a Flutter app integrated with a Firebase Realtime Database.
I want a notification (actually an alarm kind of thing if possible), when an item (lets call it alarm) in the database is set to "true". I always see firebase_messaging plugin for notifications, but I am not sure if I'm supposed to use this plugin despite that my app doesn't have anything to do with messaging.
I am totally new to both Flutter and Firebase, can you tell me how to listen to the database even if the app is not running?
By the way, I am currently building the app for only Android, but I want to build it for IOS too in the future.
Thanks.
You can use/write firebase cloud fucntion. Using firebase cloud function you can watch any document/field and try to write trigger logic like if a field is set to true then this cloud function will throw an notification via firebase messaging.
https://firebase.flutter.dev/docs/functions/overview/
When the user is not actively using the app there is no reliable way to continue to listen to changes in the Firebase Realtime Database. To notify the user of changes to the database in that situation, you'll need to listen for those change on an environment that is always on, and then send a message to the user through Firebase Cloud Messaging.
One environment that is always in is Cloud Functions, which is also part of Firebase, and allows you to run small snippets of JavaScript code on Google's servers in response to things that happen in your Firebase project. The documentation of Cloud Functions for Firebase as example of how to notify the user when something interesting happens in the database:
Developers can use Cloud Functions to keep users engaged and up to date with relevant information about an app. Consider, for example, an app that allows users to follow one another's activities in the app. Each time a user adds themselves as a follower of another user, a write occurs in the Realtime Database. Then this write event could trigger a function to create Firebase Cloud Messaging (FCM) notifications to let the appropriate users know that they have gained new followers.
The function triggers on writes to the Realtime Database path where followers are stored.
The function composes a message to send via FCM.
FCM sends the notification message to the user's device.
To review working code, see Send FCM notifications.
I want to receive notifications in my flutter mobile App when a new Product or item is added. Currently I am receiving data through JSON API response in my APP. How did i receive the Firebase Notifications or updates? And which parameters does firebase require to generate the notifications.
You can set up Firebase Cloud Functions for listening to changes in your database (if you're using something like Firestore or Realtime Database), and in that listener use Firebase Cloud Messaging to send notifications to devices.
I have already built a chat app to practice flutter and I would really like to integrate push notifications that notify the users when a new message is sent but I don't seem to find any relevant information on the internet about this topic, I am currently using firebase. what can I do in order to achieve this functionality?
Since you are already using firebase, look into Firebase Cloud Messaging. You'll need to
Save each user's device tokens in Cloud Firestore and Realtime Database
When a message is sent/written to the database, trigger a cloud function to send a notification through Cloud Messaging.
you have to use firebase cloud messaging by you have to safe each user token id
that will be notify users for a particular event
check my repository in developer branch where I implement push notification by
using firebase cloud messaging
my repository for push notification
I want to create an event management app in which the admin can create new events and the client can book seats for the event.
What I want to achieve is that when the admin creates a new event, a push notification (Even if the app is not open in the background) should be received on the client app.
I have been trying to send notifications through FCM (Firebase Cloud Messaging). But that is working only when I click the Publish button on the Firebase Console. How can I code it so that a push notification is fired automatically when the admin creates a new event?
If you use the Firestore or Firebase real-time DB to store events, you can use a Firebase cloud function to send push notifications. Read more about cloud functions here https://firebase.google.com/docs/functions/use-cases
I'm using firebase as database. Flutter responds when any changes are made in cloud while using app, but will is respond the changes even when the app is in background or killed?
Second: is it possible to create notifications within the flutter app without using Firebase notification feature? Like a new document is added in database and app is suppose to create notification using some specific lib from pubdev.
When the user is not actively using the app, the OS (Android or iOS) allows a very limited amount of network activity from that app. For this reason you'll typically stop receiving updates from Firebase once the app is backgrounded, and you won't receive any updates as soon as it's killed.
If you want to show updates to the user when they're not using the app, that typically takes using Firebase Cloud Messaging. With this scenario you:
Set up custom server-side code that listens to the database. This code can run on your own server, but also for example on Cloud Functions.
When this code detects a change to the data, it sends a message to the relevant user(s) through Firebase Cloud Messaging.
This requires that the app registers itself either in your database (with its FCM token) or for a certain FCM topic to receive updates about.
For more on this, see the Firebase documentation on Cloud Messaging, Cloud Functions, my answer here and the FlutterFire docs.