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带有混淆和优化的 Guava 的 ProGuard 配置

     2023-04-15     262

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【中文标题】带有混淆和优化的 Guava 的 ProGuard 配置【英文标题】：ProGuard configuration for Guava with obfuscation and optimization 【发布时间】：2012-02-25 13:55:32 【问题描述】：

为 Guava 寻找可以混淆和优化的 ProGuard 配置，因为网站上提供的默认配置没有。

我不仅不能让它导出我的 apk，我还不断得到：

Warning: com.google.common.collect.MinMaxPriorityQueue: 
    can't find referenced field 'int UNSET_EXPECTED_SIZE' in class  
    com.google.common.collect.MinMaxPriorityQueue$Builder
You should check if you need to specify additional program jars.

【问题讨论】：

我认为这更像是一个 Proguard 问题？ 实际上更多的是番石榴问题。 Guava 中的某些东西导致该类发出警告。列出的答案应该可以解决问题。 啊。我更关注问题的第一部分：“一个会混淆和优化的配置。” 是的，两部分的问题很烦人，但在这种情况下，两部分都是关于proguard的。 【参考方案1】：

从 Guava 17.0 开始，这是我在 ProGuard 配置中所需要的：

-dontwarn javax.annotation.**
-dontwarn javax.inject.**
-dontwarn sun.misc.Unsafe

否则构建会失败并出现如下警告：

Warning: com.google.common.base.Absent: 
   can't find referenced class javax.annotation.Nullable

（那是因为 Guava 使用注解 that are not part of Android runtime (android.jar)。在这种情况下，只需将警告静音即可。）

如果您使用的是Gradle as the build tool，则上述proguard-project.txt 和build.gradle 中的以下内容在使用Guava 时会生成一个经过优化和混淆的APK。

buildTypes 
    release 
        minifyEnabled true
        proguardFile file('proguard-project.txt')
        proguardFile getDefaultProguardFile('proguard-android-optimize.txt')

或者你可以在build.gradle依赖中include dependecy to jsr305.jar：

compile 'com.google.code.findbugs:jsr305:2.0.2'

...ProGuard 配置中只有-dontwarn sun.misc.Unsafe，但我更喜欢使用-dontwarn 也用于javax 的东西。

【讨论】：

顺便说一句，如果有人担心 Guava 依赖对 APK 大小 的影响，请不要担心。 Simple testing showed 在没有 ProGuard Guava 的情况下，APK 大小增加了大约 700KB，但在使用 ProGuard 的情况下，增加的幅度可以忽略不计。 我正在使用 Guava com.google.guava:guava:22.0-android，您的建议不适用于我的 proguard 配置。有什么想法吗？【参考方案2】：

从 23.4-android 升级到 23.5-android 时，我必须在我的 proguard 规则文件中添加以下行：

-dontwarn afu.org.checkerframework.**
-dontwarn org.checkerframework.**

下面列出了我从更新中看到的proguard警告（添加新规则之前）以供参考：

Warning: afu.org.checkerframework.checker.experimental.tainting_qual.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.experimental.tainting_qual.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.experimental.tainting_qual.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.experimental.tainting_qual.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.fenum.qual.FenumBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.fenum.qual.FenumBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.fenum.qual.FenumBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.formatter.qual.FormatBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.formatter.qual.FormatBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.formatter.qual.FormatBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.guieffect.qual.AlwaysSafe: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.guieffect.qual.AlwaysSafe: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.guieffect.qual.AlwaysSafe: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18n.qual.Localized: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18nformatter.qual.I18nFormatBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.i18nformatter.qual.I18nFormatBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.i18nformatter.qual.I18nFormatBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.initialization.qual.FBCBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.initialization.qual.FBCBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.initialization.qual.FBCBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.interning.qual.Interned: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedPrimitiveType
Warning: afu.org.checkerframework.checker.interning.qual.Interned: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror
Warning: afu.org.checkerframework.checker.interning.qual.Interned: can't find referenced class afu.com.sun.source.tree.LiteralTree
Warning: afu.org.checkerframework.checker.interning.qual.Interned: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedPrimitiveType
Warning: afu.org.checkerframework.checker.nullness.qual.KeyForBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.KeyForBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.nullness.qual.KeyForBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedPrimitiveType
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedNoType
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedPrimitiveType
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedNoType
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.Nullable: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.nullness.qual.Nullable: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.nullness.qual.Nullable: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.Mutable: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.Mutable: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.oigj.qual.Mutable: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.Mutable: can't find referenced class javax.lang.model.type.TypeKind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedPrimitiveType
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.oigj.qual.OIGJMutabilityBottom: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror$AnnotatedPrimitiveType
Warning: afu.org.checkerframework.checker.regex.classic.qual.RegexBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.regex.classic.qual.RegexBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.regex.classic.qual.RegexBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.signature.qual.SignatureBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.signature.qual.SignatureBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.signature.qual.SignatureBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.tainting.classic.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.tainting.classic.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.checker.tainting.classic.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.tainting.classic.qual.Untainted: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.checker.units.qual.UnitsRelations: can't find referenced class afu.org.checkerframework.checker.units.UnitsRelations
Warning: afu.org.checkerframework.common.aliasing.qual.MaybeAliased: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.common.aliasing.qual.MaybeAliased: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.common.aliasing.qual.MaybeAliased: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.common.reflection.qual.ClassValBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.common.reflection.qual.ClassValBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.common.reflection.qual.ClassValBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.common.reflection.qual.MethodValBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.common.reflection.qual.MethodValBottom: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.common.reflection.qual.MethodValBottom: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.common.value.qual.BottomVal: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.common.value.qual.BottomVal: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.common.value.qual.BottomVal: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.framework.qual.ImplicitFor: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.framework.qual.ImplicitFor: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.framework.qual.ImplicitFor: can't find referenced class afu.com.sun.source.tree.Tree$Kind
Warning: afu.org.checkerframework.framework.qual.ImplicitFor: can't find referenced class afu.com.sun.source.tree.Tree
Warning: afu.org.checkerframework.framework.qual.ImplicitFor: can't find referenced class javax.lang.model.type.TypeKind
Warning: afu.org.checkerframework.framework.qual.ImplicitFor: can't find referenced class afu.org.checkerframework.framework.type.AnnotatedTypeMirror
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.interning.qual.Interned: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.lock.qual.GuardedBy: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.nullness.qual.NonNull: can't find referenced class javax.lang.model.type.TypeKind
Warning: org.checkerframework.checker.units.qual.UnitsRelations: can't find referenced class org.checkerframework.checker.units.UnitsRelations
Warning: org.checkerframework.framework.qual.ImplicitFor: can't find referenced class javax.lang.model.type.TypeKind

对于那些感兴趣的人，我目前对番石榴的完整规则集是：

# Guava (official)
## Not yet defined: follow https://github.com/google/guava/issues/2117
# Guava (unofficial)
## https://github.com/google/guava/issues/2926#issuecomment-325455128
## https://***.com/questions/9120338/proguard-configuration-for-guava-with-obfuscation-and-optimization
-dontwarn com.google.common.base.**
-dontwarn com.google.errorprone.annotations.**
-dontwarn com.google.j2objc.annotations.**
-dontwarn java.lang.ClassValue
-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
# Added for guava 23.5-android
-dontwarn afu.org.checkerframework.**
-dontwarn org.checkerframework.**

【讨论】：

你是否也在 build.gradle 的依赖部分中包含了 jsr 库？ 非常感谢你，你拯救了我的一天！它也适用于“guava:24.0-android”【参考方案3】：

其中一位构建 R8 的工程师 (Stephan Herhut) 在 this session from Google I/O 2018 中列出了最新 Guava (25.0-android) 的以下规则：

-dontwarn afu.org.checkerframework.**
-dontwarn org.checkerframework.**
-dontwarn com.google.errorprone.**
-dontwarn sun.misc.Unsafe
-dontwarn java.lang.ClassValue

视频还包含规则的简短说明（前 3 个是静态分析注释框架，后 2 个是 Android 上不可用的类，受 Guava 运行时检查保护）。

我在会议结束后与 Stephan 进行了交谈，他说这些内容有望在未来包含在 Guava 文档中，或者更好地包含在未来 Guava 版本的consumerProguardFiles 中。这是希望！

【讨论】：

从技术上讲，Stephan 的演讲使用了 Guava 24.1-android，但我使用 25.0-android 测试了这些规则并且它们奏效了。 感谢基础解释。几个月过去了，这仍然不在 guava 的文档中......【参考方案4】：

现在Guava 19.0 is released，我发现我必须添加这些规则。

-keep class com.google.j2objc.annotations.**  *; 
-dontwarn   com.google.j2objc.annotations.**
-keep class java.lang.ClassValue  *; 
-dontwarn   java.lang.ClassValue
-keep class org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement  *; 
-dontwarn   org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

【讨论】：

我正在使用 Guava com.google.guava:guava:22.0-android，您的建议不适用于我的 proguard 配置。有什么想法吗？【参考方案5】：

对于 Guava 20.0，您还需要添加 ：

# Guava 20.0
-dontwarn com.google.errorprone.annotations.CanIgnoreReturnValue
-dontwarn com.google.errorprone.annotations.concurrent.LazyInit
-dontwarn com.google.errorprone.annotations.ForOverride

【讨论】：

我正在使用 Guava com.google.guava:guava:22.0-android，您的建议不适用于我的 proguard 配置。有什么想法吗？ @Eftekhari 确保您添加了所有规则，即不仅适用于 22.0，还适用于 20.0、19 等。如果这没有帮助：您可以打开一个新问题并粘贴您的错误构建【参考方案6】：

This message 建议以下解决方法：

-dontwarn com.google.common.collect.MinMaxPriorityQueue

我认为可以更改 Proguard 以使其不再需要，但我们尚未与其所有者核实。

【讨论】：

【参考方案7】：

guava 20.0 的总保护规则。目前最新的guava 21不支持android。

-dontwarn com.google.common.base.**
-keep class com.google.common.base.** *;
-dontwarn com.google.errorprone.annotations.**
-keep class com.google.errorprone.annotations.** *;
-dontwarn   com.google.j2objc.annotations.**
-keep class com.google.j2objc.annotations.**  *; 
-dontwarn   java.lang.ClassValue
-keep class java.lang.ClassValue  *; 
-dontwarn   org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
-keep class org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement  *;

【讨论】：

-keep are not needed. 缺少 -dontwarn javax.annotation.** -dontwarn javax.inject.** -dontwarn sun.misc.Unsafe【参考方案8】：

我只想与 build.gradle 中的以下内容分享我的应用现在实际工作的内容：

编译'com.google.guava:guava:23.5-android'

以下是在proguard-project.txt中处理Guava的。它本质上是TimTron的答案和develper_7的提示的结合：

-dontwarn sun.misc.Unsafe
-dontwarn com.google.common.collect.MinMaxPriorityQueue
-dontwarn com.google.common.util.concurrent.FuturesGetChecked**
-dontwarn javax.lang.model.element.Modifier
-dontwarn afu.org.checkerframework.**
-dontwarn org.checkerframework.**

【讨论】：

【参考方案9】：

guava 的 jar 文件由 java 编译器生成（与 javac 不同）在同一源文件的引用类的常量池中保留对私有内联常量的额外引用，这仅在 proguard 4.7 中失败，这似乎优化了私有常量定义，而不优化引用。未来的 guava jar 文件将不会有这样的常量池引用，但 proguard 4.7 中可能存在一个错误，它不会在标准 javac 生成的 jar 文件中体现出来。

【讨论】：

如果你告诉 ProGuard 忽略可疑的引用，它将优化掉常量定义和引用。在编译后的代码中，一个类引用了另一个类中的私有字段。据我了解，不允许这样的引用（没有访问器方法）（JVM 规范 2.17.3）。由于延迟解析，其他程序（如 JVM）可能恰好更宽容。我仍然很好奇是哪个编译器生成了这段代码。【参考方案10】：

这些 proguard 规则对我有用：guava 23.3-android

-dontwarn sun.misc.Unsafe
-dontwarn com.google.common.collect.MinMaxPriorityQueue
-dontwarn com.google.common.util.concurrent.FuturesGetChecked**
-dontwarn javax.lang.model.element.Modifier

【讨论】：

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