android - Cannot find symbol "messaging" in com.google.firebase.messaging.FirebaseMessagingService -

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i trying access firebasemessagingservice using firebase 9.2.1 library. have created project download json file. have integrated json file project. firebaseinstanceidservice running fine showing error firebasemessagingservice. checked project folder inside android studio. find firebase-messaging 9.2.1 library missing. how can resolve issue. have upgraded of sdk libraries. please me fix issue.

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you need add firebase messaging dependencies:

compile 'com.google.firebase:firebase-messaging:9.2.1'

setup firebase cloud messaging explained in documentation.


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