在play-services上构建失败：11.8.x带有保护解析器错误 [英] build failing on play-services:11.8.x with pro guard parser error

问题描述

因此，看起来最新部署的播放服务中存在一个错误。
有人知道如何解决这个问题吗？

 失败：生成失败，出现异常。 
 
 *出错：
任务'：myappname：transformClassesWithAndroidGradleClassShrinkerForDevelopmentDebug'的执行失败。 
> ProGuard配置解析器错误：/Users/myusername/.gradle/caches/transforms-1/files-1.1/play-services-base-11.8.0.aar/d2ad9e16677fda9cf07a1280a66e91ca/proguard.txt行3:88没有可行的替代输入' < fields>'
  

所以更多信息。似乎问题出在核心模块中：

 错误：执行失败，执行任务'：myappname：transformClassesWithAndroidGradleClassShrinkerForDevelopmentDebug'。 
> ProGuard配置解析器错误：/Users/myusername/.gradle/caches/transforms-1/files-1.1/play-services-base-11.8.0.aar/d2ad9e16677fda9cf07a1280a66e91ca/proguard.txt行3:88没有可行的替代输入' < fields>'
  

编辑：
导致错误的文件内容是：

 ＃b / 35135904确保proguard不会去除mResultGuardian。 
 -keepclassmembers类com.google.android.gms.common.api.internal.BasePendingResult {
 com.google.android.gms.common.api.internal.BasePendingResult.ReleasableResultGuardian< fields> ;; 
 
  

解决方案

改变。

  buildTypes {
 release {
 debuggable false 
 minifyEnabled true 
 useProguard true 
 ... 
} 
 debug {
 debuggable true 
 minifyEnabled true 
 useProguard true 
 ... 
} 
} 
  

So it looks like there is a bug in the latest play-services to be deployed. Does anyone know how to work around this issue?

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':myappname:transformClassesWithAndroidGradleClassShrinkerForDevelopmentDebug'.
> ProGuard configuration parser error: /Users/myusername/.gradle/caches/transforms-1/files-1.1/play-services-base-11.8.0.aar/d2ad9e16677fda9cf07a1280a66e91ca/proguard.txt line 3:88 no viable alternative at input '<fields>'

So more information. seems the problem is in the core module:

Error:Execution failed for task ':myappname:transformClassesWithAndroidGradleClassShrinkerForDevelopmentDebug'.
> ProGuard configuration parser error: /Users/myusername/.gradle/caches/transforms-1/files-1.1/play-services-base-11.8.0.aar/d2ad9e16677fda9cf07a1280a66e91ca/proguard.txt line 3:88 no viable alternative at input '<fields>'

EDIT: The contents of the file that is causing that error is:

# b/35135904 Ensure that proguard will not strip the mResultGuardian.
-keepclassmembers class com.google.android.gms.common.api.internal.BasePendingResult {
  com.google.android.gms.common.api.internal.BasePendingResult.ReleasableResultGuardian <fields>;
}

解决方案

It seems the default shrinker has changed. Adding the configuration to turn on ProGuard seemed to work.

buildTypes {
        release {
            debuggable false
            minifyEnabled true
            useProguard true
            ...
        }
        debug {
            debuggable true
            minifyEnabled true
            useProguard true
            ...
        }
    }

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