无法在Android Studio中生成已签名的APK，'java.io.IOException' [英] Can't generate signed APK in Android Studio, 'java.io.IOException'

问题描述

我在Android Studio中生成签名APK时遇到问题。前几天工作正常，我不知道哪里出了问题。警告：处理任务时出现异常java.io.IOException（错误）处理任务java.io.IOException ：无法写[/Users/bhaveshmisri/Downloads/littleone-dagger-mvp/app/build/intermediates/transforms/proguard/release/jars/3/1f/main.jar]（无法读取[/用户/ bhaveshmisri / Downloads / littleone-dagger-mvp / app / build / intermediates / transforms / RealmTransformer / release / folders / 1/1 / realm（;;;;;. **。class）]（Can not read [com] （无法读取[crashlytics]（无法读取[android]（无法读取[答案]（无法读取[shim]（无法读取[R.class]（重复的zip条目[com / crashlytics /android/answers/shim/R.class]））））））））

这是我的buildTypes任务： p>

  buildTypes {
 debug {
 shrinkResources false //这必须是第一个
 minifyEnabled false //这必须在shrinkResources 
 multiDexEnabled true 
 proguardFil之后es getDefaultProguardFile（proguard-android.txt），proguard-rules-debug.pro
} 
 release {
 shrinkResources true 
 minifyEnabled true 
 useProguard true 
 multiDexEnabled true 
 proguardFiles getDefaultProguardFile（'proguard-android.txt'），proguard-rules.pro
} 
} 
  
 
 
 
以下是我在proguard文件中编写的代码： 
 
 
  -optimizationpasses 5 
 -dontusemixedcaseclassnames 
 -dontskipnonpubliclibraryclasses 
 -dontskipnonpubliclibraryclassmembers 
 -dontpreverify 
 -verbose 
 -dump class_files.txt 
 -printseeds seeds.txt 
 -printusage unused.txt 
 -printmapping mapping.txt 
 -optimizations！code / simplification / arithmetic，！field / * ,! class / merging / * 
 
 -allowaccessmodification 
 -keepattributes *注释* 
 -renamesourcefileattribute SourceFile 
 -keepattributes SourceFile，LineNumberTable 
 -keepa ttributes签名
 -keepattributes异常
 -repackageclasses''
 
 -keep public class * extends android.app.Activity 
 -keep public class * extends android.app。应用程序
 -keep public class * extends android.app.Service 
 -keep public class * extends android.content.BroadcastReceiver 
 -keep public class * extends android.content.ContentProvider 
 -keep public class * extends android.app.backup.BackupAgentHelper 
 -keep public class * extends android.preference.Preference 
 -keep public class * extends android.app。 
 -keep public class com.android.vending.licensing.ILicensingService 
 
 -keep class com.google.common.collect.MapMakerInternalMap $ ReferenceEntry 
 -keep class com.google。 common.cache.LocalCache $ ReferenceEntry 
 
 -dontnote com.android.vending.licensing.ILicensingService 
 
 
 -keepclassmembers class * implements java.io.Serializable {
 static final long serialVersionUID; 
 private static final java.io.ObjectStreamField [] serialPersistentFields; 
 private void writeObject（java.io.ObjectOutputStream）; 
 private void readObject（java.io.ObjectInputStream）; 
 java.lang.Object writeReplace（）; 
 java.lang.Object readResolve（）; 
} 
 
 
 -keepclasseswithmembernames class * {
 native< methods> ;; 
 
 
 -keepclasseswithmembernames class * {
 public< init>（android.content.Context，android.util.AttributeSet）; 
 
 
 -keepclasseswithmembernames class * {
 public< init>（android.content.Context，android.util.AttributeSet，int）; 
} 
 
 -keepclassmembers class **。R $ * {
 public static< fields> ;; 
} 
 
 -keepclassmembers enum * {
 public static ** [] values（）; 
 public static ** valueOf（java.lang.String）; 
} 
 
 -keep public class * {
 public protected *; 
} 
 
 -keep class * implements android.os.Parcelable {
 public static final android.os.Parcelable $ Creator *; 
} 
 
 -dontwarn android.support.v7。** 
 -keep class android.support.v7。** {*; } 
 -keep interface android.support.v7。* {*; } 
 -keepattributes *注解，签名
 -dontwarn in.mylo.pregnancy.baby.app。** 
 -keep class in.mylo.pregnancy.baby.app.shapeimageview。** {*; } 
 
 -keep class android.support.v4.app。** {*; } 
 -keep interface android.support.v4.app。** {*; } 
 -keep interface com.actionbarsherlock。** {*; } 
 
 -keep class butterknife。* 
 -keepclasseswithmembernames class * {
 @ butterknife。*< methods>; } 
 -keepclasseswithmembernames class * {
 @ butterknife。*< fields>; } 
 
 
 -dontwarn javax.annotation。** 
 -dontwarn javax.inject。** 
 -dontwarn sun.misc.Unsafe 
 
 -dontwarn java.lang.ClassValue 
 -dontwarn com.google.j2objc.annotations.Weak 
 -dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement 
 
 
 -keep public class * implements com.bumptech.glide.module.GlideModule 
 -keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser $ ** {
 ** [] $价值; 
 public *; 
} 
 
 -twtwarn com.firebase。** 
 -dontnote com.firebase.client.core.GaePlatform 
 
 -keep class com.firebase 。** {*; } 
 
 -keepnames class com.fasterxml.jackson。** {*; } 
 -keepnames class javax.servlet。** {*; } 
 -keepnames class org.ietf.jgss。** {*; } 
 
 -dontwarn com.clevertap.android.sdk。** 
 
 
 --keep class okhttp3。** {*; } 
 -keep接口okhttp3。** {*; } 
 -dontwarn okhttp3。** 
 -dontnote okhttp3。** 
 
 -keep class sun.misc.Unsafe {*; } 
 -dontwarn java.nio.file。* 
 -dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement 
 
 -keepclassmembers class * extends android.app.Activity {
 public void *（android.view.View）; 
} 
 -keepclassmembers enum * {
 public static ** [] values（）; 
 public static ** valueOf（java.lang.String）; 
} 
 -keepclassmembers class * implements android.os.Parcelable {
 public static final android.os.Parcelable $ Creator CREATOR; 
} 
 -keepclassmembers class **。R $ * {
 public static< fields> ;; 
} 
 
 -dontwarn android.support。** 
 
 -dontwarn com.google.android.gms。** 
 
  - dontwarn com.fasterxml。** 
 -dontwarn okio。** 
 -twittwarn com.caverock。** 
 -twtwarn com.github.siyamed.shapeimageview。** 
 
 
 -twtwarn改造。** 
  - 保持改型。** {*; } 
 -dontwarn sun.misc.Unsafe 
 -dontwarn com.octo.android.robospice.retrofit.RetrofitJackson ** 
 -twittwarn retrofit.appengine.UrlFetchClient 
 -keepattributes签名
 -keepattributes异常
 -keepclasseswithmembers类* {
 @ retrofit.http。*< methods> ;; 
} 
 -keep class com.google.gson。** {*; } 
 -keep class com.google.inject。** {*; } 
 -keep class org.apache.http。** {*; } 
 -keep class org.apache.james.mime4j。** {*; } 
 -keep class javax.inject。** {*; } 
 -keep class retrofit。** {*; } 
 -keep class retrofit2。** {*; } 
 -dontwarn org.apache.http。** 
 -dontwarn android.net.http.AndroidHttpClient 
 -twtwarn改造。** 
 -twtwarn retrofit2。** 
 
 -dontwarn sun.misc。** 
 
 -keepclassmembers class rx.internal.util.unsafe。* ArrayQueue * Field * {
 long producerIndex; 
 long consumerIndex; 
} 
 
 -keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
 long producerNode; 
长的consumerNode; 
} 
 
 -keep class in.mylo.pregnancy.baby.app.retrofit。** {*; } 
 
 -keep interface org.parceler.Parcel 
 -keep @ org.parceler.Parcel class * {*; } 
 -keep class ** $$ Parcelable {*; } 
 
 -keepnames public class * extends io.realm.RealmObject 
 -keep @ io.realm.annotations.RealmModule class * 
 -keep class io.realm。** { *; } 
 -dontwarn javax。** 
 -dontwarn io.realm。** 
 
 -keepnames public class * extends io.realm.RealmObject 
 
 
 -dontwarn com.google.android.gms.location。** 
 -twtwarn com.google.android.gms.gcm。** 
 -twtwarn com.google.android.gms。 iid。** 
 
 -keep class com.google.android.gms.gcm。** {*; } 
 -keep class com.google.android.gms.iid。** {*; } 
 -keep class com.google.android.gms.location。** {*; } 
 
 -keep class com.moe.pushlibrary.activities。** {*; } 
 -keep class com.moengage.locationlibrary.GeofenceIntentService 
 -keep class com.moe.pushlibrary.InstallReceiver 
 -keep class com.moengage.push.MoEPushWorker 
 -keep class com.moe.pushlibrary.providers.MoEProvider 
 -keep class com.moengage.receiver.MoEInstanceIDListener 
 -keep class com.moengage.worker.MoEGCMListenerService 
 -keep class com.moe.pushlibrary。 ** {*;} 
 -keep class com.moengage.core.GeoTask 
 -keep class com.moengage.location.GeoManager 
 -keep class com.moengage.inapp.InAppManager 
 -keep class com.moengage.push.PushManager 
 -keep class com.moengage.inapp.InAppController 
 
 
 -dontwarn com.moengage.location.GeoManager 
 -dontwarn com.moengage.core.GeoTask 
 -dontwarn com.moengage.receiver。* 
 -dontwarn com.moengage.worker。* 
 -dontwarn com.moengage.inapp。 ViewEngine 
 
 -keep class com.delight。** {*; } 
 
 -dontwarn com.google.android.gms.location。** 
 -keep class com.moe。** {*; } 
 -keep class com.moengage。** {*; } 
 -keep class com.delight。** {*; } 
 
 -keep class com.google.android.gms.ads。** {*; } 
 
 
 
 -keep class com.facebook。** {
 *; 
} 
 
 
 
 -dontwarn android.databinding。** 
 -keep class android.databinding。** {*; } 
  
任何帮助表示感谢，提前致谢。 
 
解决方案
问题出现在答案库中。最新版本似乎有问题。当我将库降级到 
 
 
  compile（'io.branch.sdk.android:library:2.5.9'）{
排除模块：'answers-shim'
}  
 
 
 
工作正常。
 
I have a problem with generating signed APK in Android Studio. It was working fine few days ago, I dont know what went wrong. I'm getting this error for any project I try to fgenerate signed APK of:

  
Warning:Exception while processing task java.io.IOException: Can't write [/Users/bhaveshmisri/Downloads/littleone-dagger-mvp/app/build/intermediates/transforms/proguard/release/jars/3/1f/main.jar] (Can't read [/Users/bhaveshmisri/Downloads/littleone-dagger-mvp/app/build/intermediates/transforms/RealmTransformer/release/folders/1/1/realm(;;;;;;**.class)] (Can't read [com] (Can't read [crashlytics] (Can't read [android] (Can't read [answers] (Can't read [shim] (Can't read [R.class] (Duplicate zip entry [com/crashlytics/android/answers/shim/R.class]))))))))
Here is my buildTypes Task:
buildTypes {
    debug {
        shrinkResources false // This must be first
        minifyEnabled false   // This must be after shrinkResources
        multiDexEnabled true
        proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules-debug.pro"
    }
    release {
        shrinkResources true
        minifyEnabled true
        useProguard true
        multiDexEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), "proguard-rules.pro"
    }
}
Here is the code I've written in proguard file:
-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontskipnonpubliclibraryclassmembers
-dontpreverify
-verbose
-dump class_files.txt
-printseeds seeds.txt
-printusage unused.txt
-printmapping mapping.txt
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

-allowaccessmodification
-keepattributes *Annotation*
-renamesourcefileattribute SourceFile
-keepattributes SourceFile,LineNumberTable
-keepattributes Signature
-keepattributes Exceptions
-repackageclasses ''

-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 * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class * extends android.app.
-keep public class com.android.vending.licensing.ILicensingService

-keep class com.google.common.collect.MapMakerInternalMap$ReferenceEntry
-keep class com.google.common.cache.LocalCache$ReferenceEntry

-dontnote com.android.vending.licensing.ILicensingService


-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    private static final java.io.ObjectStreamField[] serialPersistentFields;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}


-keepclasseswithmembernames class * {
    native <methods>;
}

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

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

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

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

-keep public class * {
    public protected *;
}

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

-dontwarn android.support.v7.**
-keep class android.support.v7.** { *; }
-keep interface android.support.v7.* { *; }
-keepattributes *Annotation,Signature
-dontwarn in.mylo.pregnancy.baby.app.**
-keep class in.mylo.pregnancy.baby.app.shapeimageview.**{ *; }

-keep class android.support.v4.app.** { *; }
-keep interface android.support.v4.app.** { *; }
-keep interface com.actionbarsherlock.** { *; }

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


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

-dontwarn java.lang.ClassValue
-dontwarn com.google.j2objc.annotations.Weak
-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement


-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
  **[] $VALUES;
  public *;
}

-dontwarn com.firebase.**
-dontnote com.firebase.client.core.GaePlatform

-keep class com.firebase.** { *; }

-keepnames class com.fasterxml.jackson.** { *; }
-keepnames class javax.servlet.** { *; }
-keepnames class org.ietf.jgss.** { *; }

-dontwarn com.clevertap.android.sdk.**


-keep class okhttp3.** { *; }
-keep interface okhttp3.** { *; }
-dontwarn okhttp3.**
-dontnote okhttp3.**

-keep class sun.misc.Unsafe { *; }
-dontwarn java.nio.file.*
-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}
-keepclassmembers class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator CREATOR;
}
-keepclassmembers class **.R$* {
    public static <fields>;
}

-dontwarn android.support.**

-dontwarn com.google.android.gms.**

-dontwarn com.fasterxml.**
-dontwarn okio.**
-dontwarn com.caverock.**
-dontwarn com.github.siyamed.shapeimageview.**


-dontwarn retrofit.**
-keep class retrofit.** { *; }
-dontwarn sun.misc.Unsafe
-dontwarn com.octo.android.robospice.retrofit.RetrofitJackson**
-dontwarn retrofit.appengine.UrlFetchClient
-keepattributes Signature
-keepattributes Exceptions
-keepclasseswithmembers class * {
    @retrofit.http.* <methods>;
}
-keep class com.google.gson.** { *; }
-keep class com.google.inject.** { *; }
-keep class org.apache.http.** { *; }
-keep class org.apache.james.mime4j.** { *; }
-keep class javax.inject.** { *; }
-keep class retrofit.** { *; }
-keep class retrofit2.** { *; }
-dontwarn org.apache.http.**
-dontwarn android.net.http.AndroidHttpClient
-dontwarn retrofit.**
-dontwarn retrofit2.**

-dontwarn sun.misc.**

-keepclassmembers class rx.internal.util.unsafe.*ArrayQueue*Field* {
   long producerIndex;
   long consumerIndex;
}

-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
   long producerNode;
   long consumerNode;
}

-keep class in.mylo.pregnancy.baby.app.retrofit.** { *; }

-keep interface org.parceler.Parcel
-keep @org.parceler.Parcel class * { *; }
-keep class **$$Parcelable { *; }

-keepnames public class * extends io.realm.RealmObject
-keep @io.realm.annotations.RealmModule class *
-keep class io.realm.** { *; }
-dontwarn javax.**
-dontwarn io.realm.**

-keepnames public class * extends io.realm.RealmObject


-dontwarn com.google.android.gms.location.**
-dontwarn com.google.android.gms.gcm.**
-dontwarn com.google.android.gms.iid.**

-keep class com.google.android.gms.gcm.** { *; }
-keep class com.google.android.gms.iid.** { *; }
-keep class com.google.android.gms.location.** { *; }

-keep class com.moe.pushlibrary.activities.** { *; }
-keep class com.moengage.locationlibrary.GeofenceIntentService
-keep class com.moe.pushlibrary.InstallReceiver
-keep class com.moengage.push.MoEPushWorker
-keep class com.moe.pushlibrary.providers.MoEProvider
-keep class com.moengage.receiver.MoEInstanceIDListener
-keep class com.moengage.worker.MoEGCMListenerService
-keep class com.moe.pushlibrary.models.** { *;}
-keep class com.moengage.core.GeoTask
-keep class com.moengage.location.GeoManager
-keep class com.moengage.inapp.InAppManager
-keep class com.moengage.push.PushManager
-keep class com.moengage.inapp.InAppController


-dontwarn com.moengage.location.GeoManager
-dontwarn com.moengage.core.GeoTask
-dontwarn com.moengage.receiver.*
-dontwarn com.moengage.worker.*
-dontwarn com.moengage.inapp.ViewEngine

-keep class com.delight.**  { *; }

-dontwarn com.google.android.gms.location.**
-keep class com.moe.** { *; }
-keep class com.moengage.** { *; }
-keep class com.delight.** { *; }

-keep class com.google.android.gms.ads.** { *; }



-keep class com.facebook.** {
   *;
}



-dontwarn android.databinding.**
-keep class android.databinding.** { *; }
Any help appreciated, thanks in advance.
解决方案
The problem was in answers library. There seems to be a problem in the latest version. When i downgrade the library to 

compile('io.branch.sdk.android:library:2.5.9') {
        exclude module: 'answers-shim'
    }

it works fine.

                        
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