Android Studio 3.0 Execution failed for task: unable to merge dex

Question

android studio was getting build error while build execution with following:

Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'. java.lang.RuntimeException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex"

My app:build.gradle file:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion '26.0.2'
    defaultConfig {
        applicationId "com.pdroid.foodieschoice"
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    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 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.firebaseui:firebase-ui-auth:2.3.0'

    testCompile 'junit:junit:4.12'
}
configurations.all {
    resolutionStrategy {
        force 'com.android.support:appcompat-v7:26.0.1'
        force 'com.android.support:support-compat:26.0.1'
        force 'com.android.support:support-core-ui:26.0.1'
        force 'com.android.support:support-annotations:26.0.1'
        force 'com.android.support:recyclerview-v7:26.0.1'
    }
}

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

any solutions

Edit: i have done with sample through firebase github site and solved

Answer 1

For Cordova based project, run cordova clean android before build again, as @mkimmet suggested.