If some of my app get warning from google “Warning of Google Play Developer policy violation: Action Required“,
Category Icon will display at android as icon at category or topics, good icon will help user to catch the information and easy understand about category. So make sure you pick the best icon for category.
Continue reading Guide icon for Admin Panel
From your firebase admin please click Add Firebase to your Android app like this picture :
Obtain Server API_KEY for notification:
Then go to Project Settings -> Cloud Messaging, and get the new updated API Key.
OK Finish All you need for implement GCM is here :
GOOGLE_API (server) or Server key : AIzaSyB34PW……..
Use same firebase project if you want to generate file google-services.json for android