GoogleAnalyticsV2和Proguard

Question

我在项目中使用Google Analytics V2库.

当我从Eclipse导出已签名的应用程序包时,我在控制台中得到以下输出:

Proguard returned with error code 1. See console
  Warning: com.google.analytics.tracking.android.FutureApis: can't find referenced method 'boolean setReadable(boolean,boolean)' in class java.io.File
  Warning: com.google.analytics.tracking.android.FutureApis: can't find referenced method 'boolean setWritable(boolean,boolean)' in class java.io.File
        You should check if you need to specify additional program jars.
  Warning: there were 2 unresolved references to program class members.
           Your input classes appear to be inconsistent.
           You may need to recompile them and try again.
           Alternatively, you may have to specify the option 
           '-dontskipnonpubliclibraryclassmembers'.
  java.io.IOException: Please correct the above warnings first.
    at proguard.Initializer.execute(Initializer.java:321)
    at proguard.ProGuard.initialize(ProGuard.java:211)
    at proguard.ProGuard.execute(ProGuard.java:86)
    at proguard.ProGuard.main(ProGuard.java:492)

这是我的proguard.cfg

-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-dontwarn android.support.**
-verbose
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

-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 com.android.vending.licensing.ILicensingService
-keep public class * extends android.support.v4.app.Fragment
-keep public class * extends android.app.Fragment

-keepclasseswithmembernames class * {
    native <methods>;
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

-keepclassmembers class **.R$* {
  public static <fields>;
}

-keep class com.flurry.** { *; }
-dontwarn com.flurry.**

如果我添加-dontwarn com.google.analytics.tracking.android.FutureApis配置然后我得到

    at proguard.ProGuard.main(ProGuard.java:492)
   Proguard returned with error code 1. See console
         You should check if you need to specify additional program jars.
   Unexpected error while evaluating instruction:
     Class       = [android/support/v4/view/AccessibilityDelegateCompat$AccessibilityDelegateJellyBeanImpl]
     Method      = [newAccessiblityDelegateBridge(Landroid/support/v4/view/AccessibilityDelegateCompat;)Ljava/lang/Object;]
     Instruction = [18] areturn
     Exception   = [java.lang.IllegalArgumentException] (Can't find any super classes of [android/support/v4/view/AccessibilityDelegateCompatIcs$1] (not even immediate super class [android/view/View$AccessibilityDelegate]))
   Unexpected error while performing partial evaluation:
     Class       = [android/support/v4/view/AccessibilityDelegateCompat$AccessibilityDelegateJellyBeanImpl]
     Method      = [newAccessiblityDelegateBridge(Landroid/support/v4/view/AccessibilityDelegateCompat;)Ljava/lang/Object;]
     Exception   = [java.lang.IllegalArgumentException] (Can't find any super classes of [android/support/v4/view/AccessibilityDelegateCompatIcs$1] (not even immediate super class [android/view/View$AccessibilityDelegate]))
   java.lang.IllegalArgumentException: Can't find any super classes of [android/support/v4/view/AccessibilityDelegateCompatIcs$1] (not even immediate super class [android/view/View$AccessibilityDelegate])
    at proguard.evaluation.value.ReferenceValue.generalize(ReferenceValue.java:287)
    at proguard.evaluation.value.IdentifiedReferenceValue.generalize(IdentifiedReferenceValue.java:65)
    at proguard.evaluation.value.ReferenceValue.generalize(ReferenceValue.java:481)
    at proguard.optimize.info.MethodOptimizationInfo.generalizeReturnValue(MethodOptimizationInfo.java:247)
    at proguard.optimize.evaluation.StoringInvocationUnit.generalizeMethodReturnValue(StoringInvocationUnit.java:195)
    at proguard.optimize.evaluation.StoringInvocationUnit.setMethodReturnValue(StoringInvocationUnit.java:126)
    at proguard.evaluation.BasicInvocationUnit.exitMethod(BasicInvocationUnit.java:134)
    at proguard.evaluation.Processor.visitSimpleInstruction(Processor.java:514)
    at proguard.classfile.instruction.SimpleInstruction.accept(SimpleInstruction.java:218)
    at proguard.optimize.evaluation.PartialEvaluator.evaluateSingleInstructionBlock(PartialEvaluator.java:753)
    at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlock(PartialEvaluator.java:587)
    at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlockAndExceptionHandlers(PartialEvaluator.java:560)
    at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute0(PartialEvaluator.java:264)
    at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute(PartialEvaluator.java:181)
    at proguard.classfile.attribute.CodeAttribute.accept(CodeAttribute.java:101)
    at proguard.classfile.ProgramMethod.attributesAccept(ProgramMethod.java:79)
    at proguard.classfile.attribute.visitor.AllAttributeVisitor.visitProgramMember(AllAttributeVisitor.java:95)
    at proguard.classfile.util.SimplifiedVisitor.visitProgramMethod(SimplifiedVisitor.java:91)
    at proguard.classfile.ProgramMethod.accept(ProgramMethod.java:71)
    at proguard.classfile.ProgramClass.methodsAccept(ProgramClass.java:504)
    at proguard.classfile.visitor.AllMethodVisitor.visitProgramClass(AllMethodVisitor.java:47)
    at proguard.classfile.ProgramClass.accept(ProgramClass.java:346)
    at proguard.classfile.ClassPool.classesAccept(ClassPool.java:116)
    at proguard.optimize.Optimizer.execute(Optimizer.java:372)
    at proguard.ProGuard.optimize(ProGuard.java:306)
    at proguard.ProGuard.execute(ProGuard.java:115)
    at proguard.ProGuard.main(ProGuard.java:492)

任何提示？

Answer 1

我也遇到过这个问题.由于GA文档中还没有官方解决方案,我制定了这套规则:

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

这也会跳过混淆,但这不应该成为外部库的问题.

Answer 2

初始警告表明FutureApis调用File#setReadable(boolean,boolean),它在您为构建指定的目标平台上不存在(显然是android-8或更早版本).ProGuard可以忽略它,但如果在那些较旧的平台上执行该代码,那将是一个问题.Google Analytics的文档指出android-7就足够了,所以大概忽略它就好了.

意外错误表明V4支持类AccessibilityDelegateCompatIcs $ 1扩展了Android类View $ AccessibilityDelegate,它在您为构建指定的目标平台(android-13或更早版本)上不存在.在这种情况下,ProGuard确实需要该类来正确处理代码.对于不完整的类层次结构,输出将是一团糟.

您可以在编译发布版本时通过在project.properties中指定更新的构建目标来解决这两个问题.缺少的类和方法将出现在相应的android.jar中,因此ProGuard将拥有它所需的所有信息.由于这些类只是用于编译/优化/混淆的运行时库类,因此它们不会影响输出.