【问题标题】:Duplicate class in classes.jar on build project after update of Android Studio更新Android Studio后构建项目的classes.jar中的重复类
【发布时间】:2019-06-13 06:56:09
【问题描述】:

我最近将 Android Studio 更新到了最新版本,因为我遇到了连接到它的库的问题。

最近面临的问题如下:

Cause 1: java.util.concurrent.ExecutionException: java.lang.RuntimeException: Duplicate class     com.google.android.gms.internal.measurement.zzsr found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzss found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzst found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzsu found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzsv found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcu found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcv found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcw found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcx found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcy found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzdw found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)

Go to the documentation to learn how to Fix dependency resolution errors.
at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1006)
at com.android.ide.common.workers.ExecutorServiceAdapter.await(ExecutorServiceAdapter.kt:56)
at com.android.build.gradle.internal.tasks.CheckDuplicateClassesDelegate.run(CheckDuplicateClassesDelegate.kt:71)
at com.android.build.gradle.internal.tasks.CheckDuplicateClassesTask.taskAction(CheckDuplicateClassesTask.kt:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:103)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:48)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:41)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:28)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:702)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:669)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$5.run(ExecuteActionsTaskExecuter.java:404)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:92)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:393)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:376)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$200(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:213)
at org.gradle.internal.execution.steps.ExecuteStep.lambda$execute$1(ExecuteStep.java:33)
at java.util.Optional.orElseGet(Optional.java:267)
at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:33)
at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:26)
at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:58)
at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:35)
at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:48)
at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:33)
at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:39)
at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:73)
at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:54)
at org.gradle.internal.execution.steps.CatchExceptionStep.execute(CatchExceptionStep.java:35)
at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:51)
at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:45)
at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:31)
at org.gradle.internal.execution.steps.CacheStep.executeWithoutCache(CacheStep.java:201)
at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:70)
at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:45)
at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:49)
at org.gradle.internal.execution.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:43)
at org.gradle.internal.execution.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:32)
at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:38)
at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:24)
at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:96)
at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:89)
at java.util.Optional.map(Optional.java:215)
at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:54)
at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:38)
at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:77)
at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:37)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:36)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:26)
at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:90)
at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:48)
at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:33)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:120)
at org.gradle.api.internal.tasks.execution.ResolveBeforeExecutionStateTaskExecuter.execute(ResolveBeforeExecutionStateTaskExecuter.java:75)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:62)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:108)
at org.gradle.api.internal.tasks.execution.ResolveBeforeExecutionOutputsTaskExecuter.execute(ResolveBeforeExecutionOutputsTaskExecuter.java:67)
at org.gradle.api.internal.tasks.execution.ResolveAfterPreviousExecutionStateTaskExecuter.execute(ResolveAfterPreviousExecutionStateTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:94)
at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:95)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:73)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:49)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:49)
at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:43)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:129)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Duplicate class com.google.android.gms.internal.measurement.zzsr found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzss found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzst found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzsu found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.internal.measurement.zzsv found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcu found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcv found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcw found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcx found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzcy found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)
Duplicate class com.google.android.gms.measurement.internal.zzdw found in modules classes.jar (com.google.android.gms:play-services-measurement-base:16.3.0) and classes.jar (com.google.firebase:firebase-analytics-impl:16.2.1)

Go to the documentation to learn how to Fix dependency resolution errors.
at com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable.run(CheckDuplicateClassesDelegate.kt:132)
at com.android.ide.common.workers.ExecutorServiceAdapter$submit$submission$1.run(ExecutorServiceAdapter.kt:40)
at java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinTask.externalInterruptibleAwaitDone(ForkJoinTask.java:361)
at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1001)
... 99 more

应用Gradle下方找到:

apply plugin: 'com.android.application'
apply plugin: 'io.fabric'


android {
    compileSdkVersion 28
    buildToolsVersion '28.0.3'
    useLibrary  'org.apache.http.legacy'

    defaultConfig {
        applicationId "com.packageName"
        minSdkVersion 24
        targetSdkVersion 28
        multiDexEnabled true
    }

    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
        }
    }

    lintOptions {
        disable "ResourceType"
    }
}

ext {
    googlePlayServicesVersion = "4.2.0"
}


dependencies {
    implementation files('libs/icu4j-4_4_2_2.jar')
    implementation files('libs/jsoup-1.6.3.jar')
    implementation files('libs/ksoap2-android-assembly-2.6.0-jar-with-dependencies.jar')
    implementation files('libs/zip4j_1.2.6.jar')

    implementation('com.crashlytics.sdk.android:crashlytics:2.9.9@aar')     {
        transitive = true;
    }

    implementation 'com.facebook.android:facebook-android-sdk:4.38.1'
    implementation 'com.google.android.gms:play-services-auth:16.0.1'
    implementation'com.google.firebase:firebase-auth:16.1.0'

    // Firebase
    implementation 'com.google.firebase:firebase-messaging:17.3.4'
    implementation 'com.google.firebase:firebase-core:16.0.3'

    implementation 'com.google.android.gms:play-services-ads:17.2.1'

    implementation project(':pdflibrary')
    implementation 'com.android.support:support-compat:28.0.0'
    implementation 'com.android.support:cardview-v7:28.0.0'
    implementation 'com.android.support:customtabs:28.0.0'
    implementation'junit:junit:4.12'

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

    implementation 'com.google.android.gms:play-services-flags:16.0.1'   
}

pdf 库 Gradle 下方查找:

apply plugin: 'com.android.library'

android {
    compileSdkVersion 28
    buildToolsVersion '28.0.3'

    defaultConfig {
        minSdkVersion 24
        targetSdkVersion 28
        versionCode 1
        versionName '1'
    }

    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }
}

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

Project Gradle 下方查找:

buildscript {
    repositories {
        mavenCentral()
        maven { url 'https://maven.fabric.io/public' }
        google()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.1'
        classpath 'io.fabric.tools:gradle:1.29.0'
        classpath 'com.google.gms:google-services:4.1.0'
    }

}

allprojects {
    repositories {
        mavenCentral()
        google()
        maven { url 'https://maven.fabric.io/public' }
        jcenter()
    }
}

我检查了以下问题,但没有任何建议可行: Android Studio: Resolving Duplicate Classes

这可能是以下问题的重复问题: 61 Duplicate classes in classes.jar, WHERE is classes.jar located?。但不幸的是,它没有得到答复。我希望它能引起人们对这个问题的关注。

【问题讨论】:

  • 看起来重复的 com.google.android.gms.internal.measurement 类从您的播放服务和 firebase 包被包含在生成的 classes.jar 中。试试./gradlew app:dependencies,看看它是从哪些特定库中获得的。
  • 尝试从 pdf 库 Gradle 中删除 sourceSets { main { jniLibs.srcDirs = ['libs'] }
  • @MohammadSommakia 感谢您的贡献,我只想提一下,删除源集是错误的做法,因为它会禁用从系统加载库和访问 jni 文件夹中的库的能力
  • 我遇到了同样的问题,我知道这不是解决潜在问题的真正方法,但是我设法通过将所有com.google.android.gms 库的包含升级到版本17.0.0 进行编译。例如:com.google.android.gms:play-services-analytics:17.0.0

标签: java android libraries


【解决方案1】:

我也遇到过同样的问题。添加firebase libray后,我的问题就解决了。所以希望对你有帮助。

 api 'com.google.firebase:firebase-core:17.2.0'

【讨论】:

  • 你的意思是implementation
  • 将此行添加到 build.gradle 中的依赖项解决了我的问题!谢谢!
【解决方案2】:

在 build.grandle 中,在 buildTypes 中输入 multiDexEnabled true:

buildTypes {
    release {
        minifyEnabled false
        multiDexEnabled true
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}

【讨论】:

    【解决方案3】:

    **我在旧版本的库中使用我只是将其转换为以下**

      implementation 'com.google.firebase:firebase-core:19.0.1'
      implementation 'com.google.firebase:firebase-analytics:19.0.1'
    

    还要确保在 gradle.bulid 中添加以下内容

    multiDexEnabled true
    

    如果没有,请检查,然后不要忘记添加此代码

        compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    

    【讨论】:

      【解决方案4】:

      在我的情况下,错误非常相似,但类别不同

      Duplicate class com.google.android.gms.common.api.zzb found in modules classes.jar (com.google.android.gms:play-services-base:12.0.1) and classes.jar (com.google.android.gms:play-services-basement:17.0.0)
      

      我偶然发现了this react-native 问题线程,我在其中找到了修复方法。我只是包括了

      implementation ("com.google.android.gms:play-services-base:+") {
          force = true
      }
      

      加号允许 com.google.android.gms:play-services-base:+ 升级并使用最新版本,我认为其他一些依赖项完全依赖它,因为我以前没有任何 google SDK 或我项目中的 firebase 库。

      【讨论】:

      • 首先我想提一下,这很好用,但不推荐使用 force = true 属性。其次,根据谷歌开发者的网站。 . . . “不要使用组合的 play-services 目标。它会引入数十个库,使您的应用程序膨胀。相反,只指定您的应用程序使用的特定 Google Play 服务 API。”因此,解决方案是专门使用最新版本。实施 'com.google.android.gms:play-services-base:17.4.0' 。 . . . developers.google.com/android/guides/setup
      【解决方案5】:

      如果 play-services-places、play-services-maps 和 play-services-location 的版本不匹配,则往往会发生类冲突。例如,您的 app/build.gradle 文件应如下所示:

      dependencies{
         implementation 'com.google.android.gms:play-services-places:16.0.0'    
         implementation 'com.google.android.gms:play-services-maps:16.0.0'
         implementation 'com.google.android.gms:play-services-location:16.0.0'   
      } 
      

      【讨论】:

        【解决方案6】:

        因为我的情况不同,但也许可以帮助

        implementation fileTree(dir: 'libs', include: ['*.jar','*.aar'])
        implementation(name:'HERE-sdk', ext:'aar')
        

        问题是我正在实现同一个类 of.aar,所以我收到了重复的类警告

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

        【讨论】:

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