Unable to merge Dex error: Android Studio 3.0

Question

I've tried again and again to fix this problem, but none of the solutions proposed in the other questions worked for me. After merging my code with my teammates' code, I haven't been able to run my app due to this bug. I've cleaned and rebuilt my project multiple times, but the error still keeps coming up:

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

I've tried fixing gradle warnings, updating gradle compile library statements, and putting this flag in my default config:

multiDexEnabled true

The only fix that produced something different was the above flag, which allowed me to actually run the app, but then a different run-time error occurs:

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.aaronliang.flow_v1, PID: 11780 java.lang.RuntimeException: Unable to get provider >com.google.firebase.provider.FirebaseInitProvider: >java.lang.ClassNotFoundException: Didn't find class >"com.google.firebase.provider.FirebaseInitProvider" on path: DexPathList[[zip >file "/data/app/com.example.aaronliang.flow_v1->177.apk"],nativeLibraryDirectories=[/data/app->lib/com.example.aaronliang.flow_v1-177, /vendor/lib, /system/lib]]

Here are my current gradle build files:

Project build:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {

        classpath 'com.android.tools.build:gradle:3.0.0'
        classpath 'com.google.gms:google-services:3.1.0'

        //classpath 'com.android.tools.build:gradle:2.3.3'
        //classpath 'com.google.gms:google-services:3.1.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
        maven { url "https://maven.google.com" }
    }
}

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

App build:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion '26.0.2'
    defaultConfig {
        multiDexEnabled true
        applicationId "com.example.aaronliang.flow_v1"
        minSdkVersion 15
        targetSdkVersion 26
        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(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:26.1.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.android.volley:volley:1.0.0'
    compile 'com.github.bumptech.glide:glide:3.7.0'
    compile 'com.google.firebase:firebase-firestore:11.6.0'
    compile 'com.google.firebase:firebase-auth:11.6.0'
    compile 'com.google.firebase:firebase-core:11.6.0'
    compile 'com.google.android.gms:play-services:11.6.0'
    compile 'com.github.woxthebox:draglistview:1.5.0'
    //compile 'com.github.PhilJay:MPAndroidChart:v3.0.2'
    compile 'com.jjoe64:graphview:4.2.1'
    testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'

configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
        if (requested.group == 'com.android.support') {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion '25.3.1'
            }
        }

    }
}

Any help would be appreciated, because this project's due soon!

fustrating error , any body have a solution ? – K Guru Feb 27 '18 at 09:35 — K Guru, Feb 27 '18 at 09:35

score 2 · Accepted Answer · answered Nov 20 '17 at 23:40

Ok, I managed to fix my problem! I had to add these two lines:

In app/gradle.build:

compile 'com.android.support:multidex:1.0.1'

In Manifest file:

android:name="android.support.multidex.MultiDexApplication"

I obtained this from this question:

Didn't find class "com.google.firebase.provider.FirebaseInitProvider"

score 0 · Answer 2 · answered Nov 20 '17 at 20:02

0

Your minSdk is lower than 20, so you have to add compile 'com.android.support:multidex:1.0.1' to your build.gradle dependencies. Source

answered Nov 20 '17 at 20:02

sininen

503
1
6
20

Invalidate Caches/Restart or clean and rebuild after adding the line didn't help? Try adding this to your `android` tag: `dexOptions { javaMaxHeapSize "4g" }`. Does this help: https://stackoverflow.com/a/41444469 ? – sininen Nov 20 '17 at 20:55
Out of curiosity, what does that tag do? – gameCoder95 Nov 20 '17 at 22:07
1

It sets your maximum available memory to your JVM, 4g means 4 GB. – sininen Nov 21 '17 at 16:47

Unable to merge Dex error: Android Studio 3.0

2 Answers2