Error:java.io.IOException: Duplicate zip entry

Question

I am trying to solve one problem for a few days.
When I run my app, I get this error:

Error:java.io.IOException: Duplicate zip entry 
[simple-xml-2.7.1.jar:org/simpleframework/xml/Attribute.class]

And In more detail (here It says : simple-xml-2.7.1.jar but I have simple-xml-2.3.4.jar like in the image)

Error:java.lang.RuntimeException: java.io.IOException: Can't write [C:\Users\Alfonso\Documents\AndroidStudioProjectsNew\Business\VOIPMonitoring\app\build\intermediates\multi-dex\debug\componentClasses.jar] 
(Can't read [C:\Users\Alfonso\.gradle\caches\modules-2\files-2.1\org.simpleframework\simple-
xml\2.7.1\dd91fb744c2ff921407475cb29a1e3fee397d411\simple-xml-2.7.1.jar(;;;;;;**.class)] 
(Duplicate zip entry [simple-xml-2.7.1.jar:org/simpleframework/xml/Attribute.class]))


Caused by: java.io.IOException: Duplicate zip entry [simple-xml-2.7.1.jar:org/simpleframework/xml/Attribute.class]
at proguard.io.JarWriter.getOutputStream(JarWriter.java:138)
at proguard.io.FilteredDataEntryWriter.getOutputStream(FilteredDataEntryWriter.java:106)
at proguard.io.FilteredDataEntryWriter.getOutputStream(FilteredDataEntryWriter.java:106)
at proguard.io.FilteredDataEntryWriter.getOutputStream(FilteredDataEntryWriter.java:92)
at proguard.io.ClassRewriter.read(ClassRewriter.java:68)
at proguard.io.FilteredDataEntryReader.read(FilteredDataEntryReader.java:87)
at proguard.io.FilteredDataEntryReader.read(FilteredDataEntryReader.java:87)
at proguard.io.FilteredDataEntryReader.read(FilteredDataEntryReader.java:87)
at proguard.io.JarReader.read(JarReader.java:65)
at proguard.io.DirectoryPump.readFiles(DirectoryPump.java:65)
at proguard.io.DirectoryPump.pumpDataEntries(DirectoryPump.java:53)
at proguard.InputReader.readInput(InputReader.java:184)

Associated Proguard files are empty.

After the comand: gradlew clean I get:

Here where is the library (I am using external library )

My Progect build.gradle:

buildscript {
    repositories {
    jcenter()
    google()
    maven {
        url 'https://maven.google.com/'
        name 'Google'
    }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
        classpath 'com.google.gms:google-services:3.1.0'
    }
 }

 allprojects {
    repositories {
    jcenter()
        maven {
                url 'https://maven.google.com/'
                name 'Google'
        }
        maven { url  "https://dl.bintray.com/httprequester/maven" }
        maven { url 'https://oss.sonatype.org/content/repositories/ksoap2-android-releases/'}
    }
  }

  task clean(type: Delete) {
        delete rootProject.buildDir
    }

My Module: android-ngn-stack build.gradle

 buildscript {
    repositories {
    jcenter()
    google()
    maven {
        url 'https://maven.google.com/'
        name 'Google'
    }
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.1'
    classpath 'com.google.gms:google-services:3.1.0'
}


allprojects {
 repositories {
     jcenter()
     maven {
            url 'https://maven.google.com/'
            name 'Google'
        }
        maven { url  "https://dl.bintray.com/httprequester/maven" }
        maven { url 'https://oss.sonatype.org/content/repositories/ksoap2-android-releases/'}
        }
}

task clean(type: Delete) {
        delete rootProject.buildDir
}

My module:app build.gradle where i think there is the problem

    apply plugin: 'com.android.application'

    repositories {
        maven { url 'https://maven.fabric.io/public' }
        maven {
        url 'https://maven.google.com/'
        name 'Google'
        }
    }

    android {
        compileSdkVersion 25
        buildToolsVersion "26.0.2"
        defaultConfig {
            applicationId "monitoring.voip.business.tim.voipmonitoring"
            minSdkVersion 19
            targetSdkVersion 24
            multiDexEnabled true
            versionCode 3
            versionName "1.3"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
 }

dependencies {
        compile project(':android-ngn-stack')
        implementation 'com.android.support:support-v4:25.4.0'
        implementation 'com.google.firebase:firebase-config:11.0.4'
        compile fileTree(dir: 'libs', include: ['*.jar'])
        androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
             exclude group: 'com.android.support', module: 'support-annotations'
        })
        compile project(path: ':librarynetwork')
        compile 'com.android.support:appcompat-v7:25.4.0'
        compile 'com.android.support:animated-vector-drawable:25.4.0'
        compile 'com.android.support.constraint:constraint-layout:1.0.2'
        compile 'com.android.support:design:25.4.0'
        compile 'com.android.support:recyclerview-v7:25.4.0'
        compile 'com.android.support:mediarouter-v7:25.4.0'
        testCompile 'junit:junit:4.12'
        compile('com.crashlytics.sdk.android:crashlytics:2.7.1@aar') {
            transitive = true;
        }
        compile 'com.getkeepsafe.taptargetview:taptargetview:1.10.0'
        compile 'com.pnikosis:materialish-progress:1.7'
        compile 'com.loopeer.library:cardstack:1.0.2'
        compile 'com.github.aakira:expandable-layout:1.4.2@aar'
        // Room
        implementation "android.arch.persistence.room:runtime:1.0.0"
        annotationProcessor "android.arch.persistence.room:compiler:1.0.0"
        compile 'ir.bpadashi.requester:requester:1.1.6'
        compile 'com.google.code.gson:gson:2.8.2'


}

configurations.all {
        resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
            if (requested.group == 'com.android.support') {
                    if (!requested.name.startsWith("multidex")) {
                        details.useVersion '25.0.0'
                    }
            }
        }
}

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

Answer 1

After days, I solved my problem starting with a new project and adding incrementally dependencies

The problem was caused from dependencies into my gradle file in conflict with my external library.

I discovered this thanks the command

    ./gradlew app:dependencies > dependencies.txt 

where app is your project module.

The conflict problem are localized where you see the arrow (-->) .

You can exclude that dependency using "exclude module" like below (but I have prefered starting from new empty project and I will exclude dependencies problems after )

As an example, lets say that com.android.support:support-v4 is the module with the duplicate classes that are causing these errors. Here's how to exclude that duplicate module from your dependency:

//Your dependency that includes the module with the duplicates.
 compile('com.my.project:my-module:0.1') {
    //exclude the offending module so there won’t be duplicates.
    exclude module: 'support-v4'
    //maybe you need to exclude a group also?...
    exclude group: 'com.google.android.gms'
}

references to same solution

Prograurd Duplicate zip entry

Prograurd Duplicate zip entry

Answer 2

simple-xml-2.7.1.jar but i dont't use it..

You may not, but one of those other libraries does

Simple XML JAR is not a JNI library, so I don't know why you'd put it in jniLibs, but...

Delete your JAR, use this dependency instead

 compile 'org.simpleframework:simple-xml:2.7.1'

Answer 3

This is probably your problem. You put simple-xml-2.3.4.jar in your dependencies and some of your other dependencies have dependency on simple-xml-2.7.1.jar.

Use ./gradlew <module-name>:dependencies | grep simple-xml to find out if this is the case and search for dependency that uses it.

It would be best for you to try compiling without simple-xml-2.3.4.jar and see if code runs with simple-xml-2.7.1.jar.