评估指令时出现 Proguard 错误

Question

我将我的 android 项目升级到 24 SDK 版本。

但我在构建的 Proguard 路径中遇到错误：

Unexpected error while evaluating instruction:
  Class       = [com/google/android/gms/iid/zzd]
  Method      = [zzeC(Ljava/lang/String;)V]
  Instruction = [11] invokevirtual #50
  Exception   = [java.lang.ArrayIndexOutOfBoundsException] (1)
Unexpected error while performing partial evaluation:
  Class       = [com/google/android/gms/iid/zzd]
  Method      = [zzeC(Ljava/lang/String;)V]
  Exception   = [java.lang.ArrayIndexOutOfBoundsException] (1)
Warning: Exception while processing task java.io.IOException: java.lang.ArrayIndexOutOfBoundsException: 1
:PC:transformClassesAndResourcesWithProguardForDebug FAILED

FAILURE: Build failed with an exception.

我的 proguard.cfg 文件：

-printmapping /build/proguard-mapping.txt
-printusage /build/proguard-usage.txt
-printseeds /build/proguard-seeds.txt
-printconfiguration /build/proguard-configuration.txt

-optimizationpasses 5
-dontskipnonpubliclibraryclasses
-dontskipnonpubliclibraryclassmembers
#-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
-optimizations !class/unboxing/enum
-allowaccessmodification
-repackageclasses ''
-keepattributes Signature
-keepattributes SetJavaScriptEnabled
-keepattributes JavascriptInterface
-keepattributes InlinedApi
-keepattributes SourceFile, LineNumberTable
-keepattributes *Annotation*

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.preference.Preference

-libraryjars /libs

-dontwarn android.**
-dontwarn com.android.**
-dontwarn com.google.**
-dontwarn okio.**

-keep class com.google.** {*;}
-keepclassmembers class com.google.** { *; }

-keep class com.android.** {*;}
-keepclassmembers class com.android.** { *; }

-keep class okio.** {*;}
-keepclassmembers class okio.** { *; }

项目中的Build.gradle：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.2'
        classpath 'com.google.gms:google-services:3.0.0'
    }
}

应用中的Build.gradle：

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.2'
    }
}

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.0"

    defaultConfig {
        minSdkVersion 11
        targetSdkVersion 24
        signingConfig signingConfigs.release
    }

    buildTypes {
        debug {
            debuggable true
            minifyEnabled true
            signingConfig signingConfigs.release
            proguardFile 'proguard.cfg'
        }
        release {
            debuggable true
            minifyEnabled true
            signingConfig signingConfigs.release
            proguardFile 'proguard.cfg'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.google.android.gms:play-services-gcm:9.0.0'
    compile 'com.android.support:support-v4:24.0.0'
    compile 'com.android.support:appcompat-v7:24.0.0'
}

此配置在 22 android SDK 上运行良好，但更新到 24 后出现错误。

我尝试添加下一个但不成功：

-keep class com.google.android.gms.analytics.**
-keep class com.google.analytics.tracking.**
-dontwarn com.google.android.gms.analytics.**
-dontwarn com.google.analytics.tracking.**

我的错误是什么？解决方法是什么？

Answer 1

我最终得到了以下 proguard 选项：

# WORKAROUND for building project with GMS (google play services) 
-keep class com.google.android.gms.iid.zzd { *; }
-keep class android.support.v4.content.ContextCompat { *; }

Answer 2

这是由于 buildtools 使用 8.4 版本的 google play 服务造成的。我尝试使用 -keep 将特定类排除在优化之外，但它不起作用。我最终迁移到 google play services 9.0.2：

classpath 'com.android.tools.build:gradle:2.0.0'
classpath 'com.google.gms:google-services:3.0.0'

...

buildToolsVersion "24.0.0"

...

// google play services
compile ('com.google.android.gms:play-services-gcm:9.0.2')
compile ('com.google.android.gms:play-services-analytics:9.0.2')

...

Answer 3

尝试使用 9.2.1 版本；看来他们已经解决了一个proguard问题。基于发行说明。

参考链接：https://developers.google.com/android/guides/releases

Answer 4

如果你还不想影响播放服务只是，你也可以在 ProGuard 中关闭以下优化，例如

-optimizations !method/marking/private,!method/marking/static,!method/removal/parameter,!method/propagation/parameter

显然，这可能意味着性能下降，因此请谨慎使用。

Answer 5

尝试使用 9.2.1 版本；看来他们已经解决了一个proguard问题。基于发行说明。

参考链接：https://developers.google.com/android/guides/releases