Firebase 升级后 Unity Cloud Build 中出现 100 个重复类构建错误

【问题标题】：100s of Duplicate class Build errors in Unity Cloud Build after Firebase upgradeFirebase 升级后 Unity Cloud Build 中出现 100 个重复类构建错误
【发布时间】：2021-01-15 09:15:37
【问题描述】：

我们有一个 Unity 项目 (Unity 2019.2.15f1)，我们在其中使用多个 Firebase 插件： 云存储、消息传递和远程配置

我们最近将 Firebase Unity 插件从 v6.7.0 更新到 v6.15.2 本地构建已通过，甚至可以在 Android 手机上运行。

但是，它在 Unity Cloud Build 中引发了 100 多个重复的类构建错误。 我们对此问题一无所知，并且正在努力寻找解决方案。 请从 Unity Cloud Build 中找到附加的构建日志。 有没有人面临同样的问题？ 请帮我解决它。

97: [Unity] ERROR:   Duplicate class com.google.android.gms.internal.measurement.zzw found in modules classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.4:)
998: [Unity] ERROR:   Duplicate class com.google.android.gms.internal.measurement.zzx found in modules classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.4:)
999: [Unity] ERROR:   Duplicate class com.google.android.gms.internal.measurement.zzy found in modules classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.4:)
1000: [Unity] ERROR:   Duplicate class com.google.android.gms.internal.measurement.zzz found in modules classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.4:)
1001: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurement found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1002: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurement$ConditionalUserProperty found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1003: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurement$Event found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1004: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurement$EventInterceptor found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1005: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurement$OnEventListener found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1006: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurement$Param found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1007: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurement$UserProperty found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1008: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurementContentProvider found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1009: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurementInstallReferrerReceiver found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1010: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurementJobService found in modules classes.jar (:com.google.android.gms.play-services-measurement-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-17.4.4:)
1011: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurementReceiver found in modules classes.jar (:com.google.android.gms.play-services-measurement-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-17.4.4:)
1012: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.AppMeasurementService found in modules classes.jar (:com.google.android.gms.play-services-measurement-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-17.4.4:)
1013: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.api.AppMeasurementSdk found in modules classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.4:)
1014: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.api.AppMeasurementSdk$ConditionalUserProperty found in modules classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.4:)
1015: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.api.AppMeasurementSdk$EventInterceptor found in modules classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.4:)
1016: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.api.AppMeasurementSdk$OnEventListener found in modules classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-sdk-api-17.4.4:)
1017: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.internal.AppMeasurementDynamiteService found in modules classes.jar (:com.google.android.gms.play-services-measurement-sdk-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-sdk-17.4.4:)
1018: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.internal.AppMeasurementDynamiteService$zza found in modules classes.jar (:com.google.android.gms.play-services-measurement-sdk-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-sdk-17.4.4:)
1019: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.internal.AppMeasurementDynamiteService$zzb found in modules classes.jar (:com.google.android.gms.play-services-measurement-sdk-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-sdk-17.4.4:)
1020: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.internal.zza found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1021: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.internal.zzaa found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1022: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.internal.zzab found in modules classes.jar (:com.google.android.gms.play-services-measurement-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)

1323: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.internal.zzz found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1324: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.module.Analytics found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1325: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.module.Analytics$Event found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1326: [Unity] ERROR:   Duplicate class com.google.android.gms.measurement.module.Analytics$Param found in modules classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-impl-17.4.4:)
1327: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.FirebaseAnalytics found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1328: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.FirebaseAnalytics$Event found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1329: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.FirebaseAnalytics$Param found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1330: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.FirebaseAnalytics$UserProperty found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1331: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.connector.AnalyticsConnectorImpl found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1332: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.connector.AnalyticsConnectorImpl$1 found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1333: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.connector.internal.AnalyticsConnectorRegistrar found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)
1334: [Unity] ERROR:   Duplicate class com.google.firebase.analytics.connector.internal.zza found in modules classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.2:) and classes.jar (:com.google.android.gms.play-services-measurement-api-17.4.4:)

1345: [Unity] ERROR:   Duplicate class com.google.protobuf.AbstractMessageLite found in modules com.google.protobuf.protobuf-javalite-3.11.0.jar (com.google.protobuf.protobuf-javalite-3.11.0.jar) and com.google.protobuf.protobuf-lite-3.0.1.jar (com.google.protobuf.protobuf-lite-3.0.1.jar)
1346: [Unity] ERROR:   Duplicate class com.google.protobuf.AbstractMessageLite$Builder found in modules com.google.protobuf.protobuf-javalite-3.11.0.jar (com.google.protobuf.protobuf-javalite-3.11.0.jar) and com.google.protobuf.protobuf-lite-3.0.1.jar (com.google.protobuf.protobuf-lite-3.0.1.jar)
1347: [Unity] ERROR:   Duplicate class com.google.protobuf.AbstractMessageLite$Builder$LimitedInputStream found in modules com.google.protobuf.protobuf-javalite-3.11.0.jar (com.google.protobuf.protobuf-javalite-3.11.0.jar) and com.google.protobuf.protobuf-lite-3.0.1.jar (com.google.protobuf.protobuf-lite-3.0.1.jar)
1348: [Unity] ERROR:   Duplicate class com.google.protobuf.AbstractParser found in modules com.google.protobuf.protobuf-javalite-3.11.0.jar (com.google.protobuf.protobuf-javalite-3.11.0.jar) and com.google.protobuf.protobuf-lite-3.0.1.jar (com.google.protobuf.protobuf-lite-3.0.1.jar)
1349: [Unity] ERROR:   Duplicate class com.google.protobuf.AbstractProtobufList found in modules com.google.protobuf.protobuf-javalite-3.11.0.jar (com.google.protobuf.protobuf-javalite-3.11.0.jar) and com.google.protobuf.protobuf-lite-3.0.1.jar (com.google.protobuf.protobuf-lite-3.0.1.jar)
1350: [Unity] ERROR:   Duplicate class com.google.protobuf.BooleanArrayList found in modules com.google.protobuf.protobuf-javalite-3.11.0.jar (com.google.protobuf.protobuf-javalite-3.11.0.jar) and com.google.protobuf.protobuf-lite-3.0.1.jar (com.google.protobuf.protobuf-lite-3.0.1.jar)
1351: [Unity] ERROR:   Duplicate class com.google.protobuf.ByteBufferWriter found in modules com.google.protobuf.protobuf-javalite-3.11.0.jar (com.google.protobuf.protobuf-javalite-3.11.0.jar) and com.google.protobuf.protobuf-lite-3.0.1.jar (com.google.protobuf.protobuf-lite-3.0.1.jar)

【问题讨论】：

    标签： firebase unity3d firebase-cloud-messaging firebase-storage unity3d-cloud-build


    【解决方案1】：

    首先，也许旧文件仍然存在。你能尝试做一个干净的构建吗？

    来自"Why is my build failing in Unity Cloud Build but building fine locally?"：

    尝试从仪表板进行干净的构建（见下文）。

    如果这不能解决问题，则问题似乎与解决依赖关系有关（Firebase 使用名为 "Extended Dependency Manager for Unity" or "EDM4U" 的工具来帮助解决此问题）。

    如果您使用的是普通包解析（即：您在Assets/Plugins/Android/ 下看到很多jars），您可以尝试生成mainTemplate.gradle。 EDM4U 将删除它在Assets/Plugins/android/ 下管理的所有库文件，并将它们作为依赖项添加到您的 gradle 文件中。然后应该通过正常的 gradle 过程来完成构建。

    对于这种情况，即传统的依赖管理，您可能还需要检查这些文件是否包含在源代码管理中。如果不是，您可以尝试添加它们。如果是，您可以尝试排除它们。此外，如果您已提交旧库，更新它们可能会有所帮助。

    反之亦然：如果您已经在使用mainTemplate.gradle 文件，请尝试将其删除并退回到旧的依赖管理方式。这可能会解决问题。

    您可以尝试做的最后一件事：删除Assets/ 下的ExternalDependencyManager 文件夹或转到

    如果您愿意，这将是一个很好的转移到Unity issues 的问题。目前使用 Unity Cloud Build 完成的工作并不多，它可以更轻松地建立来回调试。

    【讨论】：

      【解决方案2】：

      将 Firebase Analytics 和 AdMob 添加到我的 Unity 应用时，我遇到了同样的问题。

      我做了这些步骤来解决这个问题：

      1. 将 android SDK、NDK 和工具更新到必要的版本
      2. 添加外部依赖管理器（android jar 解析器）
      3. 选择资产 -> 外部依赖管理器 -> Android 解析器 -> 解析
      4. 尝试构建应用并查看错误（如您的错误）
      5. 转到文件资源管理器并找到项目文件夹
      6. 搜索冲突文件（在项目文件夹中）

      例如：

      Duplicate class
> com.google.android.gms.internal.measurement.zzw found in modules
> classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.2:) and
> classes.jar (:com.google.android.gms.play-services-measurement-base-17.4.4:)

      搜索 * com.google.android.gms.play-services-measurement-base- *（* 在开头和结尾向 Explorer 的搜索表明可以有任何符号）并从结果中删除所有版本较低的文件(17.4.2)

      1. 再次尝试构建应用程序
      2. 如果在您的示例中出现一些添加错误，请转到第 5 步
      3. 完成

      这对我有用，但我不确定它是否对你有用，但你可以试试。

      祝你好运

      【讨论】：

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