Android Studio : com.android.ide.common.process.ProcessException:

问题

I'm trying to use ArcGis with Android Studio. I tried to follow these steps

https://developers.arcgis.com/android/guide/install-and-set-up.htm
http://blogs.esri.com/esri/arcgis/2014/05/20/using-the-arcgis-android-sdk-with-android-studio-part-1/

but I face this error :

Error:Execution failed for task ':app:dexDebug'. com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.7.0_67.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2

My app structure

app : build.gradle

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

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.1.0'

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

allprojects {
    repositories {
        jcenter()
        // Add the following arcgis repository
        maven {
            url 'http://dl.bintray.com/esri/arcgis'
        }
    }
}