MinifyEnabled true generates many warnings

Question

MinifyEnabled true generates many warnings

Hi everyone, after modifying build.gradle properties minifyEnabled true

I am getting the following error. I read that if we use minifyEnabled true

then

The ProGuard tool shrinks, optimizes, and obfuscates your code by removing unused code and renaming classes, fields, and methods with semantically obscure names. The result is a smaller sized .apk file that is more difficult to reverse engineer

I want to take advantage of the above benefits.

Warning:butterknife.internal.ButterKnifeProcessor: can't find superclass or     interface javax.annotation.processing.AbstractProcessor
Warning:retrofit.RxSupport$1: can't find superclass or interface rx.Observable$OnSubscribe
Warning:library class dagger.internal.codegen.GraphAnalysisErrorHandler extends or implements program class dagger.internal.Linker$ErrorHandler
Warning:library class dagger.internal.codegen.GraphAnalysisInjectBinding extends or implements program class dagger.internal.Binding
Warning:library class dagger.internal.codegen.GraphAnalysisLoader extends or implements program class dagger.internal.Loader
Warning:library class dagger.internal.codegen.GraphAnalysisProcessor$1 extends or implements program class dagger.internal.BindingsGroup
Warning:library class dagger.internal.codegen.GraphAnalysisProcessor$2 extends or implements program class dagger.internal.BindingsGroup
Warning:library class dagger.internal.codegen.GraphAnalysisProcessor$ProviderMethodBinding extends or implements program class dagger.internal.ProvidesBinding
Warning:library class dagger.internal.codegen.GraphAnalysisStaticInjection extends or implements program class dagger.internal.StaticInjection
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.AbstractProcessor
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced cla ss javax.annotation.processing.ProcessingEnvironment
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.Filer
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.tools.JavaFileObject
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Modifier
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.ElementKind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeVariable
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.util.Types
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeKind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.ArrayType
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.DeclaredType
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.ExecutableElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.ElementKind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.ExecutableElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.VariableElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.DeclaredType
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeKind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.SourceVersion
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced field 'javax.annotation.processing.ProcessingEnvironment processingEnv' in program class butterknife.internal.ButterKnifeProcessor
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.ProcessingEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.tools.Diagnostic$Kind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.Messager
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.util.Elements
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.PackageElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.AbstractProcessor
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.DeclaredType
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.ExecutableElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.VariableElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.ProcessingEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.Filer
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.tools.JavaFileObject
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Modifier
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.ElementKind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.util.Types
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeKind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.SourceVersion
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.tools.Diagnostic$Kind
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.Messager
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.util.Elements
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.PackageElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.tools.Diagnostic
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.util.Elements
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.util.Types
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.Filer
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.ProcessingEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.tools.JavaFileObject
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Modifier
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeVariable
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.ArrayType
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.DeclaredType
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeVariable
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.annotation.processing.RoundEnvironment
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeVariable
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.VariableElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.ExecutableElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.VariableElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.DeclaredType
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.type.TypeMirror
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.SourceVersion
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.Element
 Warning:butterknife.internal.ButterKnifeProcessor: can't find referenced class javax.lang.model.element.TypeElement
 Warning:com.fasterxml.jackson.databind.ext.DOMSerializer: can't find referenced class org.w3c.dom.bootstrap.DOMImplementationRegistry
 Warning:com.squareup.okhttp.internal.huc.HttpsURLConnectionImpl: can't find referenced method 'long getContentLengthLong()' in program class com.squareup.okhttp.internal.huc.HttpURLConnectionImpl
   Warning:com.squareup.okhttp.internal.huc.HttpsURLConnectionImpl: can't find referenced method 'long getHeaderFieldLong(java.lang.String,long)' in program class com.squareup.okhttp.internal.huc.HttpURLConnectionImpl    


(http://proguard.sourceforge.net/manual/troubleshooting.html#dependency)
   Warning:there were 5 unresolved references to program class members.
     Your input classes appear to be inconsistent.
     You may need to recompile the code.
               (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedprogramclassmember)
 :app:proguardRelease FAILED
  Error:Execution failed for task ':app:proguardRelease'.
 > java.io.IOException: Please correct the above warnings first.
 Information:BUILD FAILED
Information:Total time: 13.828 secs
 Information:1 error
Information:201 warnings
Information:See complete output in console

How to solve this problem. Any suggestion will be greatly appreciated. Thanks in advance.

+3

android android-studio

PPD Apr 21 At 4:47 am

source to share

1 answer

AndroidEx · Accepted Answer · 2015-04-21T05:00:24+0000

You will need to find the ( proguard-rules.pro

default) proguard rules file and add the following lines to it:

-keep class butterknife.** { *; }
-dontwarn butterknife.internal.**
-keep class **$$ViewInjector { *; }

-keepclasseswithmembernames class * {
    @butterknife.* <fields>;
}

-keepclasseswithmembernames class * {
    @butterknife.* <methods>;
}

-keepattributes *Annotation*,EnclosingMethod,Signature
-keepnames class com.fasterxml.jackson.** { *; }
 -dontwarn com.fasterxml.jackson.databind.**
 -keep class org.codehaus.** { *; }
 -keepclassmembers public final enum org.codehaus.jackson.annotate.JsonAutoDetect$Visibility {
 public static final org.codehaus.jackson.annotate.JsonAutoDetect$Visibility *; }
-keep public class your.class.** {
  public void set*(***);
  public *** get*();
}

-dontwarn com.squareup.okhttp.**

Run code Hide result

your.class

replace with the one you are serializing / deserializing.

This may not be enough to fix all proguard-related errors, but where to start.

As @Deividi Cavarzan pointed out, if you are using other libraries, I would suggest also looking for their recommended proguard settings to avoid further problems. If no such configuration exists, but you still have errors coming from library classes, you can try:

-keep class com.[library package].** {*;}

...

Also, not all proguard side effects are caught during build, you can easily roll your minified version with errors at runtime when the debug version runs smoothly, so testing is required after that.

MinifyEnabled true generates many warnings

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