NoClassDefFoundError using Jackson 2.2.x on Android with Gradle

Question

For my Android project I set up Gradle with Jackson 2.2.x as follows:

// build.gradle
buildscript {
    repositories {
        mavenCentral()
    }
         


        

Answer 1

Gradle and Android don't always place nicely with dependencies(yet). Running

 gradle clean

seems to fix most problems for me.

Note: If that didn't work, you can run

dexdump classes.dex | grep 'Class descriptor'

on the classes.dex file in the APK. That will check to see if the class is included in the classes.dex file. (Sometimes it's useful if you want to double check whats going on).

Answer 2

Gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        applicationId "com.app.test"
        minSdkVersion 9
        targetSdkVersion 22
        versionCode 4
        versionName "1.3"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    packagingOptions {
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
    }
}
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')  
    compile 'com.android.support:appcompat-v7:22.2.0'  `enter code here`
    compile 'com.fasterxml.jackson.core:jackson-databind :2.5.3'

}

Add permission and dependency into you Gradle and then build gradle you will get Object wrapper class