firebase - FCM - onTokenRefresh is never called on multi-flavored android app -

i have multi-flavored android app. package name same both flavors (com.mycompany.base). in app level gradle file, 2 flavors have own appplication ids (com.mycompany.firstflavor, , com.mycompany.secondflavor).

in past, google play services maps, used both application ids , google-services.json file includes information both flavors. need copy json file app , worked fine.

lately created fcm project in order implement push notification, , added each flavor app using application ids before. @ first, included 1 coppy of json file in suggested location in app. when ran app on 1 flavor, said firebase initialized successfully. however, ontokenrefresh method never called. searched on internet, , there related topics, none of solutions worked in case. when ran app on flavor, app kept crashing error message: java.lang.nosuchmethoderror: no static method zzb(ljava/lang/object;ljava/lang/object;)ljava/lang/object; in class lcom/google/android/gms/common/internal/zzab; or super classes (declaration of 'com.google.android.gms.common.internal.zzab' appears in /data/app/com.suran.dwmobile-2/base.apk:classes2.dex). issue happened on both real devices , simulators. copied json file 2 locations suggested read online. same json file appears in 2 places, under each flavo, e.g., app/src/firstflavor, , app/src/secondflavor. didn't @ all, , still had same issue. , debug mode.

when ran app build variant set release, both flavors got error message: com.android.build.api.transform.transformexception: java.util.zip.zipexception: duplicate entry: com/google/android/gms/common/internal/zzv$zza$zza.class. found answers similar issues, none of them can solve problem.

here part of manifest file may useful debugging:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:amazon="http://schemas.amazon.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     package="com.mycompany.base"     android:versioncode="1"     android:versionname="1.0">      <uses-sdk         android:minsdkversion="10"         android:targetsdkversion="21"     />      <uses-permission android:name="android.permission.internet" />     <uses-permission   android:name="android.permission.write_external_storage" />     <uses-permission android:name="android.permission.read_external_storage" />     <uses-permission android:name="android.permission.get_tasks" />     <uses-permission android:name="archos.permission.fullscreen.full" />     <uses-permission android:name="android.permission.expand_status_bar"/>     <uses-permission android:name="android.permission.send_sms" android:required="false" />     <uses-permission android:name="android.permission.camera" android:required="false"/>      <uses-feature android:name="android.permission.access_network_state" android:required="false"/>     <uses-feature android:name="android.permission.access_coarse_location" android:required="false" />     <uses-feature android:name="android.permission.access_fine_location" android:required="false" />      <uses-feature android:name="android.hardware.camera" android:required="false" />     <uses-feature android:name="android.hardware.camera.front" android:required="false" />     <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />     <uses-feature android:name="android.hardware.telephony" android:required="false" />     <uses-feature android:glesversion="0x00020000" android:required="false"/>      <application     android:name=".application.baseapplication"     android:allowbackup="true"     android:icon="@drawable/ic_launcher"     android:label="@string/app_name"     android:largeheap="true"     android:theme="@style/companytheme"     >         <service android:name=".fbinstanceservice">             <intent-filter>                 <action android:name="come.google.firebase.instance_id_event" />             </intent-filter>         </service>          <service android:name=".fbmessagingservice">             <intent-filter>                 <action android:name="com.google.firebase.messaging_event" />             </intent-filter>         </service>     </application> </manifest> 

here app level gradle file:

apply plugin: 'com.android.application'  android {     compilesdkversion 23     buildtoolsversion '25.0.0'     uselibrary 'org.apache.http.legacy'      defaultconfig {         minsdkversion 10         targetsdkversion 23         multidexenabled true         testinstrumentationrunner "android.support.test.runner.androidjunitrunner"      }      signingconfigs {         firstflavorrelease {             storefile file("xxxxxx.jks");             storepassword("xxxxxxx");             keyalias "xxxxxxx";             keypassword "xxxxxxx";         }          secondflavorrelease {             storefile file("xxxxxxx.jks");             storepassword("xxxxxxxx");             keyalias "xxxxxxxxx";             keypassword "xxxxxxxx";         }     }      buildtypes {         release {         minifyenabled false         proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.txt'         }      }      productflavors {         firstflavor {             applicationid = "com.mycompany.firstflavor"             signingconfig signingconfigs.firstflavorrelease             versioncode 1000             versionname "1.9.2"         }          secondflavor {             applicationid = "com.mycompany.secondflavor"             signingconfig signingconfigs.secondflavorrelease             versioncode 1000             versionname "1.2.2"         }     }      testoptions {         unittests.returndefaultvalues = true     } }  dependencies {     compile project(':myappcore')     compile files('libs/amazonmaps-1.0.2.jar')     compile files('libs/zbar.jar')     testcompile 'junit:junit:4.12'     testcompile 'org.mockito:mockito-core:1.9.5'     androidtestcompile 'com.linkedin.dexmaker:dexmaker-mockito:2.2.0'      androidtestcompile 'com.android.support:support-annotations:23.4.0'     androidtestcompile 'com.android.support.test:runner:0.5'     androidtestcompile 'com.android.support.test:rules:0.5'     androidtestcompile 'com.android.support.test.espresso:espresso-core:2.2.2'     androidtestcompile "com.android.support.test.espresso:espresso-intents:2.2.1"     testcompile 'org.powermock:powermock-api-mockito:1.6.1'     testcompile 'org.powermock:powermock-module-junit4-rule-agent:1.6.1'     testcompile 'org.powermock:powermock-module-junit4-rule:1.6.1'     testcompile 'org.powermock:powermock-module-junit4:1.6.1'     testcompile "org.robolectric:robolectric:3.2.2"       compile 'com.android.support:appcompat-v7:23.4.0'     compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'     compile 'com.google.code.gson:gson:2.2.4'     compile 'com.google.android.gms:play-services-maps:9.0.0'     compile 'com.google.android.gms:play-services-gcm:9.0.0'     compile 'com.google.android.gms:play-services-auth:9.0.0'     compile 'com.android.support:support-v4:23.4.0'     compile 'com.android.support:mediarouter-v7:23.4.0'     compile 'com.google.firebase:firebase-core:9.2.1'     compile 'com.google.firebase:firebase-messaging:9.2.1'     compile 'org.jsoup:jsoup:1.10.2' }  apply plugin: 'com.google.gms.google-services' 

and here project level gradle file:

buildscript {     repositories {         jcenter()     }     dependencies {         classpath 'com.android.tools.build:gradle:2.3.1'        classpath 'com.google.gms:google-services:3.0.0'     } }  allprojects {     repositories {         jcenter()     } } 

any appreciated!

after few days struggling issue, found problem was. in manifest file, incorrectly set android name service action be: come.google.firebase.instance_id_event rather com.google.firebase.instance_id_event.