Vfrdtyky

I am trying to add Firebase to my app.
Although Gradle builds succesfully, the app crashes on start with this error:

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/util/zzq;

Here is my apps build.gradle:

apply plugin: 'com.android.application'



android {

compileSdkVersion 28

defaultConfig {

    applicationId "some_id"

    minSdkVersion 17

    targetSdkVersion 28

    versionCode 1

    versionName "1.0"

    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}

buildTypes {

    release {

        minifyEnabled false

        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

    }

}

}



repositories {

    mavenCentral()

jcenter()

    flatDir {

        dirs 'libs'

    }

}



dependencies {

    implementation fileTree(include: ['*.jar'], dir: 'libs')

    implementation 'com.android.support.constraint:constraint-layout:1.1.3'

    testImplementation 'junit:junit:4.12'

    androidTestImplementation 'com.android.support.test:runner:1.0.2'

    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

/**

 * Library file of the SDK, delivered as aar-library

 */

    implementation(name: 'dwdsdk-3.3.0', ext: 'aar')

/**

 *      additional library needed for DWD-SDK:

 *      play-service: needed to receive push notifications

 */

    implementation 'com.google.android.gms:play-services-gcm:11.8.0'

    implementation 'com.android.support:appcompat-v7:28.0.0'

    implementation 'com.google.firebase:firebase-core:16.0.1'

}

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

And this is the projects build.gradle:

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



buildscript {



    repositories {

        google()

        jcenter()

    }

dependencies {

    classpath 'com.android.tools.build:gradle:3.2.1'

    classpath 'com.google.gms:google-services:4.0.1'



    // NOTE: Do not place your application dependencies here; they belong

    // in the individual module build.gradle files

    }

}



allprojects {

    repositories {

        google()

        jcenter()

        flatDir {

            dirs 'libs'

        }

    }

}



task clean(type: Delete) {

    delete rootProject.buildDir

}

Thanks for all help

If you would like to use Cloud Messaging, add

com.google.firebase:firebase-messaging:17.3.4

And remove the GCM dependency you have

I have similar problem with you.

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/util/zzq;

I think it is version problem.

you should update firebase version up to date.
It worked for me.
Thank you.