Firebase functions how to send a notification in Android

Question

I want that every time that chat is modified from the firebase database this function is activated \"sendNotification\" but this error appears:

sendNotification
         


        

Answer 1

Apparently you are using an old version of the Firebase SDK for Cloud Functions, which is < to version 1.0, but your syntax (onWrite((change, context))) corresponds to version >= 1.0.

The image shows an error on onWrite.event which corresponds to the old syntax (.onWrite((event))) .

You should update the SDK in your project, as follows:

npm install firebase-functions@latest --save
npm install firebase-admin@latest --save-exact

You should also update Firebase CLI to the latest version:

npm install -g firebase-tools

See this documentation item for all the details.