Missing api_key/current key with Google Services 3.0.0

Question

Since I upgraded the project with the latest version of google services and libraries (9.0.0), I have this strange issue :

Grade console :

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Answer 1

Using Firebase

GoogleServices'. > Missing api_key/current_key object

I got this error after updating an existing project to the new Firebase Services. The generated google-service.json file downloaded from the firebase project settings page did not include the api_key needed.

From the other answers here it looks like Google/Firebase Cloud Messaging (GCM/FCM) needs to be added for this api_key to be included in the google-service.json file.

So I added a dependencies on the firebase FCM before downloading the file again, and this time the key was included.

Include FCM (GCM)

dependencies {
     compile 'com.google.firebase:firebase-messaging:9.0.0'
}