title: TransformException: java.util.zip.ZipException: duplicate entry: android/support/v4/util/MapCollections$ArrayIterator.class
body: <p>this is my project build.gradle file .whenever i run the project in android studio i get the duplicate entry: android/support/v4/util/MapCollections$ArrayIterator.class error</p>
  
  <pre><code>apply plugin: 'com.android.application'
  android {
      compileSdkVersion 23
      buildToolsVersion '23.0.3'
      defaultConfig {
          applicationId "com.aitsolution.bizitapp.bizit"
          minSdkVersion 16
          targetSdkVersion 23
          versionCode 14
          versionName "1.13"
          multiDexEnabled = true
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
          dexOptions {
              javaMaxHeapSize "3g"
          }
      }
      lintOptions {
          checkReleaseBuilds false
          abortOnError false
      }
  }
  dependencies {
  //    compile fileTree(include: ['*.jar'], dir: 'libs')
  //    testCompile 'junit:junit:4.12'
      compile files('libs/linkedin-j-android.jar')
      compile files('libs/MobileOcrEngine.jar')
      compile files('libs/signpost-core-1.2.1.1.jar')
      compile files('libs/twitter4j-core-3.0.5.jar')
      compile files('libs/ksoap2_2.6.0.jar')
      compile 'com.android.support:appcompat-v7:23.1.1'
      compile 'com.facebook.android:facebook-android-sdk:4.6.0'
      compile 'com.android.support:multidex:1.0.1'
      compile 'com.android.support:recyclerview-v7:+'
      compile 'com.google.android.gms:play-services:9.0.0'
      compile 'com.google.android.gms:play-services-appindexing:9.0.0'
      compile 'com.android.support:cardview-v7:23.3.+'
      compile 'com.github.bumptech.glide:glide:3.6.1'
      compile 'com.google.code.gson:gson:2.4'
      compile 'com.squareup.picasso:picasso:2.5.2'
      compile 'com.edmodo:cropper:1.0.1'
  }
  </code></pre>