我正在尝试使用混淆器编译我的 Android 应用程序，但我收到以下错误并且不知道如何修复它们。有人知道吗？在 Debug模式下，一切都可以正常编译...

Note: duplicate definition of library class [org.apache.http.conn.scheme.HostNameResolver]
Note: duplicate definition of library class [org.apache.http.conn.scheme.SocketFactory]
Note: duplicate definition of library class [org.apache.http.conn.ConnectTimeoutException]
Note: duplicate definition of library class [org.apache.http.params.HttpParams]
Note: duplicate definition of library class [android.net.http.SslCertificate$DName]
Note: duplicate definition of library class [android.net.http.SslError]
Note: duplicate definition of library class [android.net.http.SslCertificate]
    Note: android.support.v4.app.NotificationCompatJellybean accesses a declared field 'title' dynamically
          Maybe this is program field 'android.support.v4.app.NotificationCompat$Action { java.lang.CharSequence title; }'
          Maybe this is program field 'android.support.v7.appcompat.R$attr { int title; }'
          Maybe this is program field 'android.support.v7.appcompat.R$id { int title; }'
          Maybe this is program field 'android.support.v7.mediarouter.R$attr { int title; }'
          Maybe this is program field 'android.support.v7.mediarouter.R$id { int title; }'
          Maybe this is program field 'com.facebook.share.internal.VideoUploader$UploadContext { java.lang.String title; }'
          Maybe this is program field 'com.facebook.share.model.GameRequestContent { java.lang.String title; }'
          Maybe this is program field 'com.facebook.share.model.GameRequestContent$Builder { java.lang.String title; }'
          Maybe this is program field 'com.google.android.gms.games.internal.player.PlayerColumnNames { java.lang.String title; }'
          Maybe this is program field 'com.google.android.gms.vision.barcode.Barcode$ContactInfo { java.lang.String title; }'
          Maybe this is program field 'com.google.android.gms.vision.barcode.Barcode$UrlBookmark { java.lang.String title; }'
          Maybe this is program field 'com.google.api.client.util.PemReader$Section { java.lang.String title; }'
          Maybe this is program field 'com.android.app.R$attr { int title; }'
          Maybe this is program field 'com.android.app.R$id { int title; }'
          Maybe this is program field 'com.android.app.adapter.InAppListItem { java.lang.String title; }'
          Maybe this is library field 'android.R$attr { int title; }'
          Maybe this is library field 'android.R$id { int title; }'
          Maybe this is library field 'android.app.Notification$Action { java.lang.CharSequence title; }'
          Maybe this is library field 'android.preference.PreferenceActivity$Header { java.lang.CharSequence title; }'
        Warning:library class com.google.api.client.auth.oauth2.TokenRequest depends on program class com.google.api.client.http.HttpRequestInitializer
        Warning:library class com.google.api.client.auth.oauth2.TokenRequest depends on program class com.google.api.client.http.HttpExecuteInterceptor
        Warning:library class com.google.api.client.auth.oauth2.TokenRequest depends on program class com.google.api.client.http.GenericUrl
        Warning:library class com.google.api.client.auth.oauth2.TokenRequest depends on program class com.google.api.client.http.HttpResponse
        Warning:library class com.google.api.client.auth.oauth2.TokenRequest depends on program class com.google.api.client.util.GenericData
        Warning:library class com.google.api.client.auth.oauth2.TokenResponse depends on program class com.google.api.client.json.GenericJson
        Warning:library class com.google.api.client.auth.oauth2.TokenResponse depends on program class com.google.api.client.util.GenericData
        Warning:library class com.google.api.client.auth.openidconnect.IdToken depends on program class com.google.api.client.json.webtoken.JsonWebSignature$Header
        Warning:library class com.google.api.client.auth.openidconnect.IdToken depends on program class com.google.api.client.json.JsonFactory
        Warning:library class com.google.api.client.auth.openidconnect.IdToken depends on program class com.google.api.client.json.webtoken.JsonWebToken$Payload
        Warning:library class com.google.api.client.auth.openidconnect.IdToken$Payload depends on program class com.google.api.client.json.webtoken.JsonWebToken$Payload
        Warning:library class com.google.api.client.auth.openidconnect.IdToken$Payload depends on program class com.google.api.client.json.GenericJson
        Warning:library class com.google.api.client.auth.openidconnect.IdToken$Payload depends on program class com.google.api.client.util.GenericData
        Warning:library class com.google.api.client.auth.openidconnect.IdTokenVerifier depends on program class com.google.api.client.util.Clock
        Warning:library class com.google.api.client.auth.openidconnect.IdTokenVerifier$Builder depends on program class com.google.api.client.util.Clock
            Note: the configuration explicitly specifies 'org.apache.http.**' to keep library class 'org.apache.http.protocol.HttpRequestExecutor'
            Note: the configuration explicitly specifies 'org.apache.http.**' to keep library class 'org.apache.http.protocol.HttpRequestInterceptorList'
            Note: the configuration explicitly specifies 'org.apache.http.**' to keep library class 'org.apache.http.protocol.HttpResponseInterceptorList'
            Note: the configuration explicitly specifies 'org.apache.http.**' to keep library class 'org.apache.http.protocol.SyncBasicHttpContext'
            Note: the configuration explicitly specifies 'org.apache.http.**' to keep library class 'org.apache.http.util.EntityUtils'
            Note: there were 2 references to unknown classes.
                  You should check your configuration for typos.
                  (http://proguard.sourceforge.net/manual/troubleshooting.html#unknownclass)
            Note: there were 112 library classes explicitly being kept.
                  You don't need to keep library classes; they are already left unchanged.
                  (http://proguard.sourceforge.net/manual/troubleshooting.html#libraryclass)
            Note: there were 16 unresolved dynamic references to classes or interfaces.
                  You should check if you need to specify additional program jars.
                  (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclass)
            Note: there were 4 accesses to class members by means of introspection.
                  You should consider explicitly keeping the mentioned class members
                  (using '-keep' or '-keepclassmembers').
                  (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclassmember)
            Warning:there were 146 instances of library classes depending on program classes.
                     You must avoid such dependencies, since the program classes will
                     be processed, while the library classes will remain unchanged.
                     (http://proguard.sourceforge.net/manual/troubleshooting.html#dependency)
            Warning:Exception while processing task java.io.IOException: Please correct the above warnings first.
            :app:transformClassesAndResourcesWithProguardForRelease FAILED
            Error:Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'.
            > java.io.IOException: Please correct the above warnings first.

我的 Gradle 文件如下所示:

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

android {
    compileSdkVersion 'Google Inc.:Google APIs:23'
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.test.app"
        minSdkVersion 17
        targetSdkVersion 21
        versionCode 240
        versionName "2.4.0"
        // Enabling multidex support.
        multiDexEnabled true
    }

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

repositories {
    mavenCentral()
}

dependencies {
    compile 'com.google.http-client:google-http-client-gson:1.20.0'
    compile 'com.google.code.gson:gson:2.4'
    compile "com.android.support:appcompat-v7:23.1.1"
    compile 'com.google.android.gms:play-services:8.3.0'

    compile 'com.facebook.android:facebook-android-sdk:4.7.0'
    compile 'com.android.support:support-v13:23.1.0'
    compile files('libs/google-api-client-1.18.0-rc.jar')
    compile files('libs/google-api-client-android-1.18.0-rc.jar')
    compile files('libs/google-http-client-android-1.18.0-rc.jar')
    compile files('libs/AudienceNetwork.jar')
}

这是我的 proguard 文件 proguard-app.txt:

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html
-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.view.View {
    public <init>(android.content.Context);
    public <init>(android.content.Context, android.util.AttributeSet);
    public <init>(android.content.Context, android.util.AttributeSet, int);
    public void set*(...);
}

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

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

-keepclassmembers class * extends android.content.Context {
   public void *(android.view.View);
   public void *(android.view.MenuItem);
}

-keepclassmembers class * implements android.os.Parcelable {
    static ** CREATOR;
}

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

-keepclassmembers class * {
    @android.webkit.JavascriptInterface <methods>;
}

-keepattributes Exceptions,InnerClasses,Signature

-keep class com.google.api.client.**
-keepclassmembers class com.google.api.client.** {
    *;
 }


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


-keep class com.google.ads.**
-keepclassmembers class com.google.ads.** {
    *;
 }

-keep class bolts.**
-keepclassmembers class bolts.** {
    *;
 }

-keep class com.google.api.client.** { *; }
-dontwarn com.google.api.client.*
-keep class org.apache.http.** { *; }
-dontwarn org.apache.http.*

-libraryjars libs
#-injars libs/AudienceNetwork.jar
#-injars libs/google-api-client-1.18.0-rc.jar
#-injars libs/google-api-client-android-1.18.0-rc.jar
#-injars libs/google-http-client-android-1.18.0-rc.jar


 # The official support library.
-keep class android.support.v4.** { *; }
-keepclassmembers class android.support.v4.** {
    *;
 }
-keep interface android.support.v4.** { *; }
-keep class android.support.v7.** { *; }
-keepclassmembers class android.support.v7.** {
    *;
 }
-keep interface android.support.v7.** { *; }

# Library JARs.
-keep class com.facebook.** {
   *;
}
-keepclassmembers class com.facebook.** {
    *;
 }

最佳答案

将以下行添加到您的 proguard-rules.pro 文件

-keep class android.support.v4.** { *; }
-dontnote android.support.v4.**

关于android - 在启用混淆器的情况下以 Release模式编译 Android 应用程序时出现问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33857887/