FirebaseCloudMessaging : FirebaseInstanceId background sync failed - SERVICE_NOT_AVAILABLE

Question

I have use Firebase Cloud Messaging(FCM) API for the push notification in Android. When I implemented that time perfect work but now it's can not find the Service of google play.

the error is:

FirebaseInstanceId: background sync failed: SERVICE_NOT_AVAILABLE,

Please help me how to resolve. I Have use below dependency in gradle file.

dependencies {     compile files('libs/ksoap2-android-assembly-3.4.0-jar.jar')     compile 'com.android.support:appcompat-v7:23.0.0'     compile files('libs/gson-2.2.4.jar')     compile files('libs/activation.jar')     compile files('libs/mail.jar')     compile files('libs/additionnal.jar')     compile 'com.android.support:multidex:1.0.1'     compile 'com.facebook.android:facebook-android-sdk:4.14.0'     compile 'com.google.firebase:firebase-messaging:9.0.2'      compile('com.google.android.gms:play-services:9.0.2') {         exclude group: "play-services-wallet"         exclude module: "play-services-wallet"         exclude group: "play-services-ads"         exclude module: "play-services-ads"     }  } 

Thanks for taking the time to read this.

Answer 1

1. Verify internet connectivity
2. Verify if the Android SDK tools(Tools -> Android -> SDK manager -> SDK tools tab) has 'Google Play services' latest version and if not install the package. Then if you are using emulator, please stop the emulator and start it again.It works