Vfrdtyky

I use the following way for adding the multidex in my project but i come across with the following error

Error: Program type already present:
android.support.multidex.ZipUtil$CentralDirectory

build.gradle

apply plugin: 'com.android.application'



android {

    compileSdkVersion rootProject.ext.compileSdkVersion

    buildToolsVersion rootProject.ext.buildToolsVersion



    defaultConfig {

        applicationId "com.example.app"

        minSdkVersion rootProject.ext.minSdkVersion

        targetSdkVersion rootProject.ext.targetSdkVersion

        versionCode 3

        versionName "1.0.7"

        vectorDrawables.useSupportLibrary = true

        vectorDrawables {

            useSupportLibrary = true

        }

        multiDexEnabled true

    }



    dexOptions {

        preDexLibraries = false

        javaMaxHeapSize "12g"

    }



    buildTypes {

        release {

            minifyEnabled true

            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

        }

    }

}



dependencies {

    implementation fileTree(include: ['*.jar'], dir: 'libs')

    implementation 'com.android.support:appcompat-v7:' + rootProject.ext.supportLibraryVersion

    implementation 'com.android.support:support-v4:' + rootProject.ext.supportLibraryVersion

    implementation 'com.android.support:design:' + rootProject.ext.supportLibraryVersion

    implementation 'com.android.support:cardview-v7:' + rootProject.ext.supportLibraryVersion

    implementation 'com.android.support:recyclerview-v7:' + rootProject.ext.supportLibraryVersion

    implementation 'dev.dworks.libs:volleyplus:+'

    implementation 'com.squareup.picasso:picasso:2.71828'        

    implementation 'androidx.multidex:multidex:2.0.0'

    ......

}



afterEvaluate {

    tasks.matching {

        it.name.startsWith('dex')

    }.each { dx ->

        if (dx.additionalParameters == null) {

            dx.additionalParameters = 

        }

        dx.additionalParameters += '--multi-dex' // enable multidex



        // optional

        dx.additionalParameters += "--main-dex-list=$projectDir/multidex.keep".toString()

    }

}



ext {

    compileSdkVersion = 28

    buildToolsVersion = "28.0.2"

    minSdkVersion =19

    targetSdkVersion = 28

    supportLibraryVersion = '26.0.0-alpha1'

}

multidex.keep

android/support/multidex/BuildConfig/class

android/support/multidex/MultiDex$V14/class

android/support/multidex/MultiDex$V19/class

android/support/multidex/MultiDex$V4/class

android/support/multidex/MultiDex/class

android/support/multidex/MultiDexApplication/class

android/support/multidex/MultiDexExtractor$1/class

android/support/multidex/MultiDexExtractor/class

android/support/multidex/ZipUtil$CentralDirectory/class

android/support/multidex/ZipUtil/class

AppController.java

public class AppController extends Application {



    @Override

    public void onCreate() {

        super.onCreate();

        MultiDex.install(this);

   }

}

can anyone help me
thanks

If you are using Android studio to build project.

Please run from menu

Build-> Clean Project

And than rebuild the project

I was getting the such error with other libraries. It got solved by using the above mentioned steps.