Quickstart-android: Firebase API initialization failure. (java.lang.IncompatibleClassChangeError)

[ibrahimyilmaz7]

Hi,

    FirebaseMessaging.getInstance().subscribeToTopic("global");

this line causing en error:

05-26 15:52:42.551 11612-11612/com.lotram.uygulamacoapp A/FirebaseApp: Firebase API initialization failure. java.lang.reflect.InvocationTargetException at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.google.firebase.FirebaseApp.zza(Unknown Source) at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) at com.google.firebase.FirebaseApp.zzbu(Unknown Source) at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source) at android.content.ContentProvider.attachInfo(ContentProvider.java:1714) at android.content.ContentProvider.attachInfo(ContentProvider.java:1683) at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) at android.app.ActivityThread.installProvider(ActivityThread.java:5012) at android.app.ActivityThread.installContentProviders(ActivityThread.java:4607) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4547) at android.app.ActivityThread.access$1500(ActivityThread.java:148) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5272) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704) Caused by: java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar) at com.google.firebase.iid.zzg.zzeC(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzd.zzb(Unknown Source) at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source) at java.lang.reflect.Method.invoke(Native Method)  at java.lang.reflect.Method.invoke(Method.java:372)  at com.google.firebase.FirebaseApp.zza(Unknown Source)  at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)  at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)  at com.google.firebase.FirebaseApp.zzbu(Unknown Source)  at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)  at android.content.ContentProvider.attachInfo(ContentProvider.java:1714)  at android.content.ContentProvider.attachInfo(ContentProvider.java:1683)  at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)  at android.app.ActivityThread.installProvider(ActivityThread.java:5012)  at android.app.ActivityThread.installContentProviders(ActivityThread.java:4607)  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4547)  at android.app.ActivityThread.access$1500(ActivityThread.java:148)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:135)  at android.app.ActivityThread.main(ActivityThread.java:5272)  at java.lang.reflect.Method.invoke(Native Method)  at java.lang.reflect.Method.invoke(Method.java:372)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)  05-26 15:52:43.401 11612-11612/com.lotram.uygulamacoapp E/ApkAssets: Error while loading asset assets/icudtl.dat: java.io.FileNotFoundException: assets/icudtl.dat 05-26 15:52:44.017 11612-11612/com.lotram.uygulamacoapp E/AndroidRuntime: FATAL EXCEPTION: main Process: com.lotram.uygulamacoapp, PID: 11612 java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar) at com.google.firebase.iid.zzg.zzeC(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzd.zzb(Unknown Source) at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source) at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source) at com.google.firebase.messaging.FirebaseMessaging.getInstance(Unknown Source) at com.lotram.uygulamacoapp.MainActivity.onCreate(MainActivity.java:51) at android.app.Activity.performCreate(Activity.java:5977) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2258) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2365) at android.app.ActivityThread.access$800(ActivityThread.java:148) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1283) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5272) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704) 05-26 15:59:59.507 17613-17613/com.lotram.uygulamacoapp A/FirebaseApp: Firebase API initialization failure. java.lang.reflect.InvocationTargetException at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.google.firebase.FirebaseApp.zza(Unknown Source) at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) at com.google.firebase.FirebaseApp.zzbu(Unknown Source) at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source) at android.content.ContentProvider.attachInfo(ContentProvider.java:1714) at android.content.ContentProvider.attachInfo(ContentProvider.java:1683) at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) at android.app.ActivityThread.installProvider(ActivityThread.java:5012) at android.app.ActivityThread.installContentProviders(ActivityThread.java:4607) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4547) at android.app.ActivityThread.access$1500(ActivityThread.java:148) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5272) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704) Caused by: java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar) at com.google.firebase.iid.zzg.zzeC(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzd.zzb(Unknown Source) at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source) at java.lang.reflect.Method.invoke(Native Method)  at java.lang.reflect.Method.invoke(Method.java:372)  at com.google.firebase.FirebaseApp.zza(Unknown Source)  at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)  at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)  at com.google.firebase.FirebaseApp.zzbu(Unknown Source)  at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)  at android.content.ContentProvider.attachInfo(ContentProvider.java:1714)  at android.content.ContentProvider.attachInfo(ContentProvider.java:1683)  at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)  at android.app.ActivityThread.installProvider(ActivityThread.java:5012)  at android.app.ActivityThread.installContentProviders(ActivityThread.java:4607)  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4547)  at android.app.ActivityThread.access$1500(ActivityThread.java:148)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:135)  at android.app.ActivityThread.main(ActivityThread.java:5272)  at java.lang.reflect.Method.invoke(Native Method)  at java.lang.reflect.Method.invoke(Method.java:372)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)  05-26 16:00:00.275 17613-17613/com.lotram.uygulamacoapp E/ApkAssets: Error while loading asset assets/icudtl.dat: java.io.FileNotFoundException: assets/icudtl.dat 05-26 16:00:00.694 17613-17613/com.lotram.uygulamacoapp E/AndroidRuntime: FATAL EXCEPTION: main Process: com.lotram.uygulamacoapp, PID: 17613 java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar) at com.google.firebase.iid.zzg.zzeC(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzg.<init>(Unknown Source) at com.google.firebase.iid.zzd.zzb(Unknown Source) at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source) at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source) at com.google.firebase.messaging.FirebaseMessaging.getInstance(Unknown Source) at com.lotram.uygulamacoapp.MainActivity.onCreate(MainActivity.java:64) at android.app.Activity.performCreate(Activity.java:5977) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2258) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2365) at android.app.ActivityThread.access$800(ActivityThread.java:148) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1283) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5272) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)

my app/build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "com.lotram.uygulamacoapp"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

repositories {
    maven {
        url 'https://download.01.org/crosswalk/releases/crosswalk/android/maven2'
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.1'
    compile 'com.android.support:design:23.2.1'
    compile 'org.xwalk:xwalk_core_library:17.46.448.10'
    compile 'com.loopj.android:android-async-http:1.4.9'
    compile 'org.apache.commons:commons-io:1.3.2'

    compile 'com.google.firebase:firebase-messaging:9.0.0'
}

apply plugin: 'com.google.gms.google-services'

and my project/build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
        classpath 'com.google.gms:google-services:3.0.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

[samtstern]

@iboylmz try updating your dependency to compile 'com.google.firebase:firebase-messaging:9.0.2', I believe this bug was fixed in the patches between 9.0.0 and 9.0.2.

[samtstern]

@iboylmz closing this issue, please comment if the fix above does not work for you.

[Purvik]

Failed to resolve: 'com.google.firebase:firebase-messaging:9.0.2' while integrating that will project. And my app is not starting anyway. It is saying "firebase api initialization failure".

Help me out something.

[dsdebastiani]

Hello @samtstern , the error still occurring with 9.0.2
Log:

07-06 15:26:57.485 3897-3897/ A/FirebaseApp: Firebase API initialization failure.
java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.google.firebase.FirebaseApp.zza(Unknown Source)
    at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)
    at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)
    at com.google.firebase.FirebaseApp.zzbu(Unknown Source)
    at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1696)
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1671)
    at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
    at android.app.ActivityThread.installProvider(ActivityThread.java:5084)
    at android.app.ActivityThread.installContentProviders(ActivityThread.java:4679)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4619)
    at android.app.ActivityThread.access$1500(ActivityThread.java:155)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1378)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5343)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
Caused by: java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar)
    at com.google.firebase.iid.zzg.zzeC(Unknown Source)
    at com.google.firebase.iid.zzg.<init>(Unknown Source)
    at com.google.firebase.iid.zzg.<init>(Unknown Source)
    at com.google.firebase.iid.zzd.zzb(Unknown Source)
    at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source)
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.google.firebase.FirebaseApp.zza(Unknown Source) 
    at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) 
    at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) 
    at com.google.firebase.FirebaseApp.zzbu(Unknown Source) 
    at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source) 
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1696) 
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1671) 
    at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) 
    at android.app.ActivityThread.installProvider(ActivityThread.java:5084) 
    at android.app.ActivityThread.installContentProviders(ActivityThread.java:4679) 
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4619) 
    at android.app.ActivityThread.access$1500(ActivityThread.java:155) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1378) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:135) 
    at android.app.ActivityThread.main(ActivityThread.java:5343) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)

[mykfrost]

i have the same problem. am trying son hard to use firebase but problems keep arising one after another. am getting tired of this. Please help us out with this. i know Google always has a solution

[mykfrost]

Caused by: java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'com.google.firebase.iid.zzg' appears in /data/data/com.example.michaelokello.erp/files/instant-run/dex/slice-com.google.firebase-firebase-iid-9.0.0_e7a33b7a0993c47f35320c5f853852bbb21b5f39-classes.dex)

[samtstern]

@mykfrost please don't double-post issues here.

[ibrahimyilmaz7]

Updating gradle to

compile 'com.google.firebase:firebase-messaging:9.0.0

fix this issue for me.

[gentjana]

Please help me. I see this error:

FATAL EXCEPTION: main
Process: com.example.aneg2_000.firebasenotificationapp, PID: 2303
java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar)
at com.google.firebase.iid.zzg.zzeC(Unknown Source)
at com.google.firebase.iid.zzg.(Unknown Source)
at com.google.firebase.iid.zzg.(Unknown Source)
at com.google.firebase.iid.zzd.zzb(Unknown Source)
at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source)
at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source)
at com.google.firebase.messaging.FirebaseMessaging.getInstance(Unknown Source)
at com.example.aneg2_000.firebasenotificationapp.MainActivity.onCreate(MainActivity.java:16)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Project gradle as below:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.1.2'
classpath 'com.google.gms:google-services:3.0.0'

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}

}

allprojects {
repositories {
jcenter()
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}

App gradle as below:

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

android {
compileSdkVersion 24
buildToolsVersion "24.0.1"

defaultConfig {
    applicationId "com.example.aneg2_000.firebasenotificationapp"
    minSdkVersion 9
    targetSdkVersion 24
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.1.1'
compile 'com.google.firebase:firebase-messaging:9.0.2'
compile 'com.squareup.okhttp3:okhttp:3.2.0'
}

[thomaskanzig]

Hi guys, I did the same problem and after for very searches I find the solution:

Update the dependencies of firebase in the build.gradle with 9.0.2 version
compile 'com.google.firebase:firebase-core:9.0.2'
compile 'com.google.firebase:firebase-messaging:9.0.2'

This Resolved for me.

[elsennov]

I got this error on 9.4.0 , same error. Could anybody help? Thanks

[GiorgioNatili]

@elsennov I solved it by adding the following dependencies to the app gradle file

    compile 'com.google.firebase:firebase-database:9.4.0'
    compile 'com.google.firebase:firebase-core:9.4.0'
    compile 'com.google.firebase:firebase-auth:9.4.0'
    compile 'com.google.firebase:firebase-config:9.4.0'

[elsennov]

Hi @GiorgioNatili , thanks! Last day i just added firebase-core , then the error was gone.

[JemarJones]

I have all of my dependencies set at version 9.4.0, but am still experiencing this exact same issue. Any help?

[doppie]

@JemarJones In my case I forgot to add an empty constructor to the custom object I wanted to store in the FirebaseDatabase.

[JemarJones]

It turns out that i have a separate unrelated issue that i resulting in gradle to fallback to 9.0.0, which results in this issue. So in any case i'm sure 9.4.0 is actually working fine.

[alashow]

@samtstern Hello. I was trying to config my app for Proguard, which uses Firebase products.

First I had following warnings:

Warning: com.google.firebase.crash.FirebaseCrash: can't find referenced class com.google.android.apps.common.proguard.UsedByReflection
Warning: com.google.firebase.crash.internal.config.flag.Flags: can't find referenced class com.google.android.gms.internal.zzud
Warning: com.google.android.gms.crash.internal.service.CrashReceiverService: can't find referenced method 'com.google.android.gms.dynamic.zzd zzae(java.lang.Object)' in program class com.google.android.gms.dynamic.zze

(all of them)

The I added these rules to dismiss them:

-dontwarn com.google.firebase.**
-dontwarn com.google.android.gms.crash.internal.service.**

My release build succeed, but when I launched my app I got similar exceptions like in this issue:

E/FirebaseApp( 2969): Firebase API initialization failure.
E/FirebaseApp( 2969): java.lang.reflect.InvocationTargetException
E/FirebaseApp( 2969):   at java.lang.reflect.Method.invoke(Native Method)
E/FirebaseApp( 2969):   at com.google.firebase.FirebaseApp.a(Unknown Source)
E/FirebaseApp( 2969):   at com.google.firebase.FirebaseApp.a(Unknown Source)
E/FirebaseApp( 2969):   at com.google.firebase.FirebaseApp.a(Unknown Source)
E/FirebaseApp( 2969):   at com.google.firebase.FirebaseApp.a(Unknown Source)
E/FirebaseApp( 2969):   at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)
E/FirebaseApp( 2969):   at android.content.ContentProvider.attachInfo(ContentProvider.java:1751)
E/FirebaseApp( 2969):   at android.content.ContentProvider.attachInfo(ContentProvider.java:1726)
E/FirebaseApp( 2969):   at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
E/FirebaseApp( 2969):   at android.app.ActivityThread.installProvider(ActivityThread.java:5811)
E/FirebaseApp( 2969):   at android.app.ActivityThread.installContentProviders(ActivityThread.java:5403)
E/FirebaseApp( 2969):   at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5342)
E/FirebaseApp( 2969):   at android.app.ActivityThread.-wrap2(ActivityThread.java)
E/FirebaseApp( 2969):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1528)
E/FirebaseApp( 2969):   at android.os.Handler.dispatchMessage(Handler.java:102)
E/FirebaseApp( 2969):   at android.os.Looper.loop(Looper.java:154)
E/FirebaseApp( 2969):   at android.app.ActivityThread.main(ActivityThread.java:6077)
E/FirebaseApp( 2969):   at java.lang.reflect.Method.invoke(Native Method)
E/FirebaseApp( 2969):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
E/FirebaseApp( 2969):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
E/FirebaseApp( 2969): Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/internal/zzud;
E/FirebaseApp( 2969):   at com.google.firebase.crash.internal.config.flag.Flags.<clinit>(Unknown Source)
E/FirebaseApp( 2969):   at com.google.firebase.crash.internal.config.flag.Flags.initialize(Unknown Source)
E/FirebaseApp( 2969):   at com.google.firebase.crash.FirebaseCrash.getInstance(Unknown Source)
E/FirebaseApp( 2969):   ... 20 more
E/FirebaseApp( 2969): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.internal.zzud" on path: DexPathList[[zip file "/data/app/tm.asmanoky.aziada-1/base.apk"],nativeLibraryDirectories=[/data/app/tm.asmanoky.aziada-1/lib/x86, /data/app/tm.asmanoky.aziada-1/base.apk!/lib/x86, /system/lib, /vendor/lib]]
E/FirebaseApp( 2969):   at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
E/FirebaseApp( 2969):   at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
E/FirebaseApp( 2969):   at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
E/FirebaseApp( 2969):   ... 23 more

Could you please suggest me proper the proguard rules when using firebase crash?

Thank you.

[samtstern]

@alashow what version of the client library are you using? As far as I am aware there are no specific proguard rules needed to use Firebase Crash but I could be missing something.

[paulonova]

Hi everyone!
I need a help with my Firebase Remote Config that shows this error:

java.lang.IncompatibleClassChangeError: com.google.android.gms.internal.zzade$zzc$1

att this code: mFBConfig.fetch(3600)

mFBConfig.fetch(3600).addOnCompleteListener(this, new OnCompleteListener() {
@Override
public void onComplete(@NonNull Task task) {
if (task.isSuccessful()) {
Log.i(TAG, "Promo check successful");

                // If the fetch was successful, then "activate" the
                // values that were retrieved from the server
                mFBConfig.activateFetched();
            }
            else {
                Log.e(TAG, "Promo check failed");
            }

            showPromoButton();
        }
    });

Did someone know how to solv this problem???

Tanks
Paulo

[paulonova]

All mt libraries are updated...

[mrzasoltani]

I updated gradle to

compile 'com.google.firebase:firebase-messaging:9.0.2

it solved for me :)

[SwayChen]

I must set firebase-core version the same

[zsigmondszilveszter]

https://groups.google.com/forum/#!topic/firebase-talk/sIogPuUsC50