Class 'MyFirebaseMessagingService' is not abstract and does not implement abstract base class member public abstract fun zzd(p0: Intent!)

Question

Here I have used FirebaseMessagingService in Kotlin but when I run the project it will give me the following error:

Class 'MyFirebaseMessagingService' is not abstract and does not implement abstract base class member public abstract fun zzd(p0: Intent!): Unit defined in com.google.firebase.messaging.FirebaseMessagingService

Any help?

Answer 1

Update all your Firebase dependencies to use the latest version: 15.0.2
https://firebase.google.com/support/release-notes/android

Answer 2

If you aren't using any other play services then upgrade your firebase version to 15.0.2.

if you are, downgrading to 12.0.1 will work.

Make sure to stick to play service 3.2.1 since 3.3.0 will still crash firebase-config.

Answer 3

On 2nd of May there is a new release that allow the below

Firebase Android SDKs now have independent version numbers, allowing for more frequent, flexible updates.

So I think now we need to used different versions according to each module, check release notes pages to latest released details https://firebase.google.com/support/release-notes/android

Answer 4

Just update google-services to 3.2.1 with 3.3.0 might be some problems

classpath 'com.google.gms:google-services:3.2.1'

and firebase-messaging to 15.0.2

implementation 'com.google.firebase:firebase-messaging:15.0.2'