Como resolver a falha de inicialização da API do Firebase (Android + Firebase)

Recentemente, precisei usar o Google GCM no meu projeto. Da sualocal na rede Internet é dito:

O FCB (Firebase Cloud Messaging) é a nova versão do GCM. Ele herda a infraestrutura GCM confiável e escalável, além de novos recursos! Consulte as Perguntas frequentes para saber mais. Se você estiver integrando mensagens em um novo aplicativo, comece com o FCM. É altamente recomendável que os usuários do GCM atualizem para o FCM, a fim de se beneficiar dos novos recursos do FCM hoje e no futuro.

Para configurar um novo aplicativo Firebase, segui as instruções fornecidas nowebsite oficial e fez o seguinte:

Criei um novo aplicativo Firebase no console da web e obtive meu json a partir daí - depois de fornecer o pacote correto do meu aplicativo;No arquivo gradle do projeto de nível superior, adicioneiclasspath 'com.google.gms:google-services:3.0.0' na seção de dependência;No arquivo gradle do meu módulo, adicionei:compile 'com.google.firebase:firebase-core:9.0.0' compile 'com.google.firebase:firebase-messaging:9.0.0' e na última linha, adicionei:apply plugin: 'com.google.gms.google-services';

Os arquivos completos do Gradle são fornecidos abaixo:

Arquivo gradle de nível superior:

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.7'
        classpath 'com.google.gms:google-services:3.0.0'
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
    }
}

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

Arquivo gradle do módulo:

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    dexOptions {
        javaMaxHeapSize "4g"
    }

    defaultConfig {
        applicationId "br.com.gogame"
        minSdkVersion 21
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        multiDexEnabled true
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    useLibrary  'org.apache.http.legacy'
}

dependencies {
    ...
    compile 'com.google.firebase:firebase-core:9.0.0'
    compile 'com.google.firebase:firebase-messaging:9.0.0'
    ...
}

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

Quando inicio meu aplicativo, recebo este stacktrace:

05-23 14:04:55.109 13368-13368/br.com.gogame I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.internal.zzqq$zzd>
05-23 14:04:55.109 13368-13368/br.com.gogame I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.internal.zzqq$zzd>
05-23 14:04:55.110 13368-13368/br.com.gogame I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.internal.zzqq$zzc>
05-23 14:04:55.110 13368-13368/br.com.gogame I/art: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.gms.internal.zzqq$zzc>
05-23 14:04:55.126 13368-13368/br.com.gogame E/FirebaseApp: Firebase API initialization failure.
                                                            java.lang.reflect.InvocationTargetException
                                                                at java.lang.reflect.Method.invoke(Native Method)
                                                                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:1748)
                                                                at android.content.ContentProvider.attachInfo(ContentProvider.java:1723)
                                                                at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
                                                                at android.app.ActivityThread.installProvider(ActivityThread.java:5174)
                                                                at android.app.ActivityThread.installContentProviders(ActivityThread.java:4769)
                                                                at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4709)
                                                                at android.app.ActivityThread.-wrap1(ActivityThread.java)
                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1415)
                                                                at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                at android.os.Looper.loop(Looper.java:148)
                                                                at android.app.ActivityThread.main(ActivityThread.java:5443)
                                                                at java.lang.reflect.Method.invoke(Native Method)
                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
                                                             Caused by: java.lang.NoSuchMethodError: No static method zzy(Ljava/lang/Object;)Ljava/lang/Object; in class Lcom/google/android/gms/common/internal/zzx; or its super classes (declaration of 'com.google.android.gms.common.internal.zzx' appears in /data/app/br.com.gogame-2/base.apk:classes26.dex)
                                                                at com.google.android.gms.measurement.internal.zzt.zzaU(Unknown Source)
                                                                at com.google.android.gms.measurement.AppMeasurement.getInstance(Unknown Source)
                                                                at java.lang.reflect.Method.invoke(Native Method) 
                                                                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:1748) 
                                                                at android.content.ContentProvider.attachInfo(ContentProvider.java:1723) 
                                                                at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) 
                                                                at android.app.ActivityThread.installProvider(ActivityThread.java:5174) 
                                                                at android.app.ActivityThread.installContentProviders(ActivityThread.java:4769) 
                                                                at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4709) 
                                                                at android.app.ActivityThread.-wrap1(ActivityThread.java) 
                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1415) 
                                                                at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                at android.os.Looper.loop(Looper.java:148) 
                                                                at android.app.ActivityThread.main(ActivityThread.java:5443) 
                                                                at java.lang.reflect.Method.invoke(Native Method) 
                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) 
                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
05-23 14:04:55.131 13368-13368/br.com.gogame I/FirebaseInitProvider: FirebaseApp initialization successful
05-23 14:04:55.133 13368-13368/br.com.gogame E/AndroidRuntime: FATAL EXCEPTION: main
                                                               Process: br.com.gogame, PID: 13368
                                                               java.lang.NoSuchMethodError: No static method zzy(Ljava/lang/Object;)Ljava/lang/Object; in class Lcom/google/android/gms/common/internal/zzx; or its super classes (declaration of 'com.google.android.gms.common.internal.zzx' appears in /data/app/br.com.gogame-2/base.apk:classes26.dex)
                                                                   at com.google.android.gms.measurement.internal.zzt.zzaU(Unknown Source)
                                                                   at com.google.android.gms.measurement.AppMeasurementContentProvider.onCreate(Unknown Source)
                                                                   at android.content.ContentProvider.attachInfo(ContentProvider.java:1748)
                                                                   at android.content.ContentProvider.attachInfo(ContentProvider.java:1723)
                                                                   at android.app.ActivityThread.installProvider(ActivityThread.java:5174)
                                                                   at android.app.ActivityThread.installContentProviders(ActivityThread.java:4769)
                                                                   at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4709)
                                                                   at android.app.ActivityThread.-wrap1(ActivityThread.java)
                                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1415)
                                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                   at android.os.Looper.loop(Looper.java:148)
                                                                   at android.app.ActivityThread.main(ActivityThread.java:5443)
                                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

Qualquer ajuda para resolver este problema será muito apreciada! Saudações

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