ProGuard configuration for Guava with obfuscation and optimization

As of Guava 17.0, this is what I needed in ProGuard config:

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

Otherwise build fails with warnings like:

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

(That's because Guava uses annotations that are not part of Android runtime (android.jar). In this case it's fine to just mute the warnings.)

If you are using Gradle as the build tool, the above proguard-project.txt and the following in build.gradle produces an optimised and obfuscated APK while using Guava.

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

Alternatively you can include dependecy to jsr305.jar in build.gradle dependencies:

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

...with only -dontwarn sun.misc.Unsafe in ProGuard config, but I preferred using -dontwarn also for the javax stuff.

I had to add the following lines to my proguard rules file when upgrading from 23.4-android to 23.5-android:

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

The proguard warnings that I saw from the update (before adding new rules) are listed below for reference:

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

For those interested, the full ruleset I have for guava currently is:

# 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://stackoverflow.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.**

One of the engineers who built R8 (Stephan Herhut) listed the following rules for the latest Guava (25.0-android) in this session from Google I/O 2018:

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

The video also includes a short explanation of the rules (first 3 are static analysis annotation frameworks, last 2 are unavailable classes on Android which are protected by runtime checks in Guava).

I spoke with Stephan after the session and he said these will hopefully be included in the Guava documentation in the future or better yet in the consumerProguardFiles of future Guava releases. Here's hoping!