Cannot resolve symbol 'FirebaseAuth'

Question

Why am I getting this error? My repository and Google play services are up to date and I've used all the requires steps for using Firebase like copying firebase code in both build.gradle(Project and app). The intellisence doesn't even show FirebaseAuth but displays other members of Firebase.

Answer 1

Solved the error by adding this to the build.gradle file(for app) -

implementation 'com.google.firebase:firebase-auth:18.0.0'
implementation 'com.google.android.gms:play-services-gcm:17.0.0'

The 2nd dependency is to solve the version conflict error.

Answer 2

Add this dependency to Gradle.Build(Module:App)

compile "com.google.firebase:firebase-auth:9.0.2"

then sync with gradle :)

Answer 3

Add these two dependencies into your build.gradle as 'compile' is replaced by 'implementation'

dependencies {
implementation 'com.google.firebase:firebase-auth:16.0.4'  
implementation "com.google.android.gms:play-services-gcm:16.0.0"
}

***For the latest android studio version 3.0 and new ones ***