Can not resolve symbol "FirebaseMessagingService"

Question

I'm tring to integrate Firebase Cloud Messaging in android app but facing problem to extend FirebaseMessagingService in our class.

It displaying Can not resolve symbol "FirebaseMessagingService"

app.gradle

compile 'com.google.firebase:firebase-core:10.0.1'
compile 'com.google.firebase:firebase-database:9.8.0'

and also add google-service.json file

Answer 1

you also need to add

compile "com.google.firebase:firebase-messaging:$PLAY_SERVICES_VERSION"

Answer 2

You have to add another dependency:

dependencies {
     compile 'com.google.firebase:firebase-messaging:10.0.1'
}

Check the official doc.

Answer 3

Add these dependencies it will solve your problem

dependencies {
 compile 'com.google.firebase:firebase-core:9.0.0'
 compile 'com.google.firebase:firebase-messaging:9.4.0'
 }

Answer 4

dependencies {    
      implementation 'com.google.firebase:firebase-messaging:21.0.0'
}