Gradle build failed in Android Studio 1.5.1

Question

I'm unable to run my app. Every time I'm trying to run my app in emulator Android studio shows me following error.

Error:Execution failed for task ':app:transformClassesWithDexForDebug'.> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files (x86)\Java\jdk1.8.0_66\bin\java.exe'' finished with non-zero exit value 2

Here's my build.gradle files.

build.gradle(app)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    defaultConfig {
        applicationId "com.gripxtech.kasim.unipayretailer"
        minSdkVersion 10
        targetSdkVersion 23
        versionCode 1
        versionName '1.0'
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }
    productFlavors {
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'com.android.support:cardview-v7:23.1.1'
    compile 'com.android.support:recyclerview-v7:23.1.1'
    compile 'com.jakewharton:butterknife:7.0.1'
    compile 'com.malinskiy:superrecyclerview:1.1.1'
    compile 'org.apache.commons:commons-lang3:3.4'
    compile 'com.codinguser.android:contactpicker:3.0.0@aar'
    compile 'com.squareup.okhttp:okhttp:2.7.0'
    compile project(':materialdatetimepick')
}

build.gradle(Project)

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.5.0'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

I've already tried to apply solution from many question similar to mine but, still I can't solve my issue. Thanks in Advance.

Answer 1

Add this to build.gradle file:

android {
...
defaultConfig {
    ...
    multiDexEnabled true
    }
}

Here you would find an explanation why this error happened: UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define

If it wouldn't work, please delete all files and folders from:

YOUR_APP_NAME\app\build\intermediates

It sometimes happens when you have duplicated dependencies with different versions

Try this command and check if there something twice:

./gradlew dependencies

Hope it help