com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/maven/com.fasterxml.jackson.core/jackson-databind/pom.xml

Question

I am creating one app that uses a RestAPI to fetch data, and for that operation I am using retrofit 2, okhttp3 and jackson for parsing json to object, my app also use Fireba

Answer 1

Make changes in the gredle, You have to exclude to maven too.

packagingOptions {

    exclude 'META-INF/LICENSE'
    exclude 'META-INF/NOTICE'
    exclude 'META-INF/maven

}

and if you are using google-play-service you can exclude the annotation like

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile ('com.google.android.gms:play-services:8.1.0'){
    exclude group: 'com.google.guava'
}
}

Or you can try this also

configurations {
all*.exclude group: 'com.android.support', module: 'support-v4'
}