minifyEnabled true生成很多警告

Question

大家都在更改build.gradle屬性後minifyEnabled true我收到以下錯誤。我看書上說如果我們使用minifyEnabled true然後

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 

我想使用上述典型應用該類超支。

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 

如何解決此問題。任何建議將不勝感激。提前致謝。

Answer 1

你需要找到與proguard的規則（proguard-rules.pro默認）的文件，並添加以下行到它：

-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.**

your.class替代與序列化/反序列化的一個。

這可能不足以消除所有與proguard相關的錯誤，但是可以從頭開始。

正如@Deividi Cavarzan指出的那樣，如果您使用其他庫，我會建議搜索他們推薦的proguard設置以避免更多問題。如果不存在這樣的配置，但您仍然有錯誤來自圖書館的課程，您可以嘗試：

-keep class com.[library package].** {*;}。另外，並非所有的proguard副作用都會在構建時被捕獲，您可以很容易地得到您的縮小版本與運行時錯誤崩潰，其中調試版本可以順利運行，因此之後需要進行測試。