Proguard 错误：“找不到...的通用超类”答案

【问题标题】：Proguard error: "Can't find common super class of ..."Proguard 错误：“找不到...的通用超类”
【发布时间】：2019-05-04 01:40:05
【问题描述】：

我在 Android Studio 中构建应用时遇到此错误：

Unexpected error while performing partial evaluation:
  Class       = [com/google/android/gms/internal/zznc]
  Method      = [zza(Lcom/google/android/gms/internal/zzmk;Landroid/content/Context;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Lcom/google/android/gms/internal/zznh;Lcom/google/android/gms/internal/zzgl;Lcom/google/android/gms/internal/zznb;)Lcom/google/android/gms/internal/zzmn;]
  Exception   = [java.lang.IllegalArgumentException] (Can't find common super class of [com/google/android/gms/internal/zzmn] (with 1 known super classes) and [java/lang/String] (with 2 known super classes))
Warning: Exception while processing task java.io.IOException: java.lang.IllegalArgumentException: Can't find common super class of [com/google/android/gms/internal/zzmn] (with 1 known super classes) and [java/lang/String] (with 2 known super classes)
:analytics_test_app:transformClassesAndResourcesWithProguardForDebug FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':analytics_test_app:transformClassesAndResourcesWithProguardForDebug'.
> Job failed, see logs for details

我该如何解决？

【问题讨论】：

标签： java android google-play-services proguard

【解决方案1】：

您有不同版本的 Play Service 库吗？确保对所有库使用相同的版本：

implementation 'com.google.android.gms:play-services-analytics:16.0.1'
implementation 'com.google.android.gms:play-services-auth:11.8.0' // should be the same version

某些版本具有不同的实现和 API，这会导致内部冲突，也会影响 Proguard。

【讨论】：