java.lang.NoClassDefFoundError:解析失败：Lcom/google/android/gms/common/util/zzq；

我正在尝试将Firebase添加到我的应用程序中。 尽管Gradle构建成功，但应用程序在启动时崩溃，出现以下错误：

java.lang.NoClassDefFoundError:解析失败：Lcom/google/android/gms/common/util/zzq

这是我的应用程序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'

// 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
}

这是projects 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'

// 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
}

---

谢谢你的帮助

我和你有类似的问题

java.lang.NoClassDefFoundError:解析失败：Lcom/google/android/gms/common/util/zzq

我认为这是版本问题

您应该将firebase版本更新为最新版本。 这对我有用。 谢谢。

如果您愿意，请添加

---

并删除您对GCM的依赖关系

您使用的是什么版本？我在firebase中使用了gms服务，这是我的gradle。实现'com.google.firebase:firebase核心：16.0.5'GCM已被firebase云取代Messaging@mrd对你有用吗？我也陷入了同样的问题。