android - java.util.zip.ZipException: duplicate entry -


i have been battling error day in android studio. project imported eclipse solution. have been trying implement fixes listed similar posts, nothing working. android beginner.

i happy provide further information.

error:execution failed task ':app:packagealldebugclassesformultidex'.

java.util.zip.zipexception: duplicate entry: com/google/zxing/barcodeformat.class

please help!! should try run in eclipse?

// top-level build file can add configuration options common sub-projects/modules. buildscript {     repositories {         jcenter()     }     dependencies {         classpath 'com.android.tools.build:gradle:1.1.2'     } }  allprojects {     repositories {         jcenter()     } }  apply plugin: 'com.android.application'  android {     compilesdkversion 21     buildtoolsversion "21.1.2"      defaultconfig {         applicationid "com.appname.android"         minsdkversion 8         targetsdkversion 18         multidexenabled true     }      buildtypes {         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.txt'         }     } }  dependencies {     compile 'com.android.support:support-v4:22.1.1'     compile files('libs/ksoap2-android-assembly-3.1.0-jar-with-dependencies.jar')     provided files('libs/zxing-core.jar') }

make sure have latest build toolds , sdk sdk manager. have converted jars gradle dependencies.

build.gradle:

// top-level build file can add configuration options common sub-projects/modules. buildscript {     repositories {         jcenter()         maven { url 'https://oss.sonatype.org/content/repositories/ksoap2-android-releases/' } // <-- added ksoap     }      dependencies {         classpath 'com.android.tools.build:gradle:1.1.3' // <-- updated     } }  allprojects {     repositories {         jcenter()         maven { url 'https://oss.sonatype.org/content/repositories/ksoap2-android-releases/' } // <-- added ksoap     } }

app/build.gradle:

apply plugin: 'com.android.application'  android {     compilesdkversion 22     buildtoolsversion "22.0.1" // <-- updated      defaultconfig {         applicationid "com.appname.android"         minsdkversion 8         targetsdkversion 22  // <-- updated         // multidexenabled true  // <-- not need     }      buildtypes {         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.txt'         }     } }  dependencies {     compile 'com.android.support:support-v4:22.1.1'     compile 'com.google.code.ksoap2-android:ksoap2-android:3.4.0'     // compile files('libs/ksoap2-android-assembly-3.1.0-jar-with-dependencies.jar') // <-- avoid using jars     compile 'com.google.zxing:core:3.2.0'     // provided files('libs/zxing-core.jar') // <-- avoid using jars }

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