I have this in my top-level build.gradle:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath \'com.google.gms:google-s
Update com.google.firebase:firebase-messaging:9.0.2
and com.google.android.gms:play-services:9.0.2
to same version(latest version) and sync the project.
Check if plugin is added on bottom like this.
dependencies {
compile 'com.android.support:appcompat-v7:24.0.0'
..................
}
apply plugin: 'com.google.gms.google-services'