What is authorizedEntity? Can't find gcm_defaultSenderId in own app

Question

I am trying to get my app running with Google Cloud Messaging. I am following the Google Cloud Messaging Quickstart App which can be found here on github.

In their quick

Answer 1

The R.string.gcm_defaultSenderId value is generated by the Gradle google-services plugin which uses a google-services.json file with defined constants.

The plugin is applied in Gradle:

apply plugin: 'com.google.gms.google-services'

For more info check Implementing GCM Client on Android and see how to get the google-services.json file and set-up Gradle & app in developer console.