error while using firebase

Question

When i'm using Firebase I always face this error !

Error:FAILURE: Build failed with an exception.

What went wrong:

Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'. com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE File1: C:\Users\e171x.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-core\2.2.2\d20be6a5ddd6f8cfd36ebf6dea329873a1c41f1b\jackson-core-2.2.2.jar File2: C:\Users\e171x.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-databind\2.2.2\3c8f6018eaa72d43b261181e801e6f8676c16ef6\jackson-databind-2.2.2.jar File3: C:\Users\e171x.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-annotations\2.2.2\285cb9c666f0f0f3dd8a1be04e1f457eb7b15113\jackson-annotations-2.2.2.jar
Try: Run with --stacktrace option to get the stack trace. Run with --debug option to get more log output.

which doesn't allow the emulator to run

my app gradle

   apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.1"
    defaultConfig {
        applicationId "com.example.e171x.testingonline"
        minSdkVersion 15
        targetSdkVersion 24
        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:appcompat-v7:24.2.1'
    compile 'com.google.firebase:firebase-crash:9.8.0'
    compile 'com.google.firebase:firebase-database:9.8.0'
    compile 'com.google.firebase:firebase-auth:9.8.0'
    compile 'com.firebase:firebase-client-android:2.3.1'
    testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'

post your gradle file

Manoj Perumarath
– Manoj Perumarath

2016-11-01 11:05:36 +00:00
Commented Nov 1, 2016 at 11:05 — Manoj Perumarath
– Manoj Perumarath, Commented Nov 1, 2016 at 11:05
Done @ManojFrekzz

whoseee
– whoseee

2016-11-01 11:08:33 +00:00
Commented Nov 1, 2016 at 11:08 — whoseee
– whoseee, Commented Nov 1, 2016 at 11:08
stackoverflow.com/a/20675331/6648201

rookieDeveloper
– rookieDeveloper

2016-11-01 11:09:25 +00:00
Commented Nov 1, 2016 at 11:09 — rookieDeveloper
– rookieDeveloper, Commented Nov 1, 2016 at 11:09

Kamran Ahmed · Accepted Answer · 2016-11-01 11:30:12Z

2

It looks like you are adding one of the JARs, namely jackson-core-2.2.2.jar from multiple modules. If you are using Android Studio, check in build.gradle files of each of your modules to check where the duplication is. You may keep it where it is accessible from all modules based on your dependency chain.

Replace:

compile 'com.firebase:firebase-client-android:2.3.1'

with:

compile('com.firebase:firebase-client-android:2.3.1', {
    exclude group: 'com.fasterxml.jackson.core', module: 'jackson-bind'
    exclude group: 'com.fasterxml.jackson.core', module: 'jackson-annotations'
    exclude group: 'com.fasterxml.jackson.core', module: 'jackson-core'
})

edited Nov 1, 2016 at 11:30

answered Nov 1, 2016 at 11:06

Kamran Ahmed

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6 Comments

whoseee Over a year ago

I edited the post and added build.gradle , Can you check please if I have any duplication ? "

Kamran Ahmed Over a year ago

You have only one module in your project?

whoseee Over a year ago

buildscript { repositories { jcenter() } dependencies { classpath 'com.android.tools.build:gradle:2.2.1' classpath 'com.google.gms:google-services:3.0.0' } } allprojects { repositories { jcenter() } } task clean(type: Delete) { delete rootProject.buildDir }

whoseee Over a year ago

Yes and the above is my project gradle

Kamran Ahmed Over a year ago

Are you using any JAR files, I mean putting them in lib folder?

|

Bob Snyder · Accepted Answer · 2016-11-01 14:40:14Z

1

You should not use both the legacy Firebase SDK, com.firebase:firebase-client-android:2.3.1, and the libraries of the new 9.x.x SDK in the same app. They are not compatible and will interfere with each other. Remove com.firebase:firebase-client-android:2.3.1 and read the Firebase Upgrade Guide for tips on code changes.

edited Nov 1, 2016 at 14:40

answered Nov 1, 2016 at 14:15

Bob Snyder

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