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 Nov 01 '16 at 11:05 — Manoj Perumarath, Nov 01 '16 at 11:05
http://stackoverflow.com/a/20675331/6648201 – rookieDeveloper Nov 01 '16 at 11:09 — rookieDeveloper, Nov 01 '16 at 11:09

Kamran Ahmed · Accepted Answer · 2016-11-01T11:30:12.367

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 01 '16 at 11:30

answered Nov 01 '16 at 11:06

Kamran Ahmed

7,661
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I edited the post and added build.gradle , Can you check please if I have any duplication ? " – whoseee Nov 01 '16 at 11:10
You have only one module in your project? – Kamran Ahmed Nov 01 '16 at 11:11
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 Nov 01 '16 at 11:14
Yes and the above is my project gradle – whoseee Nov 01 '16 at 11:15
1

Are you using any `JAR` files, I mean putting them in `lib` folder? – Kamran Ahmed Nov 01 '16 at 11:17
No it's empty , my all application is 1 button and 1 plaintext , Just for testing firebase – whoseee Nov 01 '16 at 11:22

Bob Snyder · Answer 2 · 2016-11-01T14:40:14.653

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 01 '16 at 14:40

answered Nov 01 '16 at 14:15

Bob Snyder

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error while using firebase

2 Answers2