How to solve Firebase API initialization failure (Android + Firebase)
I recently needed to use Google GCM in my project. From its website it is said: Firebase Cloud Messaging (FCM) is the new version of GCM. It inherits the reliable and scalable GCM infrastructure, plus new features! See the FAQ to learn more. If you are integrating messaging in a new app, start with FCM. GCM users are strongly recommended to upgrade to FCM, in order to benefit from new FCM features today and in the future. In order to setup a new Firebase application, I've followed the instructions provided at the official website and did the following: Created a new Firebase app in the web