title: Error after adding play-services library : ':app:transformClassesWithJarMergingForDebug'
body: <p>My project was working perfectly with those libraries included:</p>
  
  <pre><code>// Support libraries
  compile 'com.android.support:support-v4:23.1.0'
  compile 'com.android.support:appcompat-v7:23.1.0'
  compile 'com.android.support:cardview-v7:23.1.0'
  compile 'com.android.support:recyclerview-v7:23.1.0'
  // Other stuff
  compile 'com.jakewharton:butterknife:7.0.1'
  compile 'com.squareup.picasso:picasso:2.5.2'
  compile 'com.google.code.gson:gson:2.3'
  compile 'com.squareup.retrofit:retrofit:1.9.0'
  compile 'com.afollestad:material-dialogs:0.7.8.1'
  compile 'com.jpardogo.materialtabstrip:library:1.1.0'
  compile 'com.melnykov:floatingactionbutton:1.3.0'
  compile 'com.code-troopers.betterpickers:library:2.0.0'
  compile 'com.loopj.android:android-async-http:1.4.9'
  compile 'com.squareup.okhttp:okhttp:2.5.0'
  compile 'com.facebook.fresco:fresco:0.7.0'
  </code></pre>
  
  <p>now i tried to follow this tutorial: <a href="https://developers.google.com/cloud-messaging/android/client" rel="noreferrer">Set up a GCM Client App on Android</a></p>
  
  <p>I added </p>
  
  <blockquote>
    <ol>
    <li>Add the dependency to your project's top-level build.gradle:<br>
    <code>classpath 'com.google.gms:google-services:1.4.0-beta3'</code></li>
    <li>Add the plugin to your app-level build.gradle:<br>
    <code>apply plugin: 'com.google.gms.google-services'</code></li>
    </ol>
  </blockquote>
  
  <p>Then i added :</p>
  
  <pre><code>compile "com.google.android.gms:play-services:8.1.0"
  </code></pre>
  
  <p>Now when i try to sync, clean, or rebuild. Gradle shows me it is done successfully.</p>
  
  <p><strong>THE ERROR:</strong>
  When i try to run the app and choose device. I get this error:</p>
  
  <pre><code>Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'.
  &gt; com.android.build.transform.api.TransformException: java.util.zip.ZipException: duplicate entry: android/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoIcsImpl.class
  </code></pre>
  
  <p>This is the last version of my app-level build.gradle:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  apply plugin: 'com.google.gms.google-services'
  
  android {
      packagingOptions {
          exclude 'META-INF/DEPENDENCIES'
          exclude 'META-INF/LICENSE'
          exclude 'META-INF/LICENSE.txt'
          exclude 'META-INF/license.txt'
          exclude 'META-INF/NOTICE'
          exclude 'META-INF/NOTICE.txt'
          exclude 'META-INF/notice.txt'
          exclude 'META-INF/ASL2.0'
          exclude 'META-INF/services/javax.annotation.processing.Processor'
      }
      compileSdkVersion 23
      buildToolsVersion "23.0.0"
      defaultConfig {
          applicationId "com.mbh.gcmTest"
          minSdkVersion 15
          targetSdkVersion 23
          versionCode 12
          versionName "1.2.2"
  
          // Enabling multidex support. trying to fix 
          multiDexEnabled true
      }
      lintOptions {
          disable 'InvalidPackage'
      }
      buildTypes {
          release {
              minifyEnabled false
          }
      }
      dexOptions {
          preDexLibraries = false
      }
      productFlavors {
      }
  }
  
  //compile fileTree(include: ['*.jar'], dir: 'libs')
  //debugCompile 'com.squareup.leakcanary:leakcanary-android:1.3.1'
  //releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.3.1'
  dependencies {
      provided 'org.glassfish:javax.annotation:10.0-b28'
  
      // Support Libraries
      compile 'com.android.support:support-v4:23.1.0'
      compile 'com.android.support:appcompat-v7:23.1.0'
      compile 'com.android.support:cardview-v7:23.1.0'
      compile 'com.android.support:recyclerview-v7:23.1.0'
  
      compile 'com.jakewharton:butterknife:7.0.1'
      compile 'com.squareup.picasso:picasso:2.5.2'
      compile 'com.google.code.gson:gson:2.3'
      compile 'com.squareup.retrofit:retrofit:1.9.0'
      compile 'com.afollestad:material-dialogs:0.7.8.1'
      compile 'com.jpardogo.materialtabstrip:library:1.1.0'
      compile 'com.melnykov:floatingactionbutton:1.3.0'
      compile 'com.code-troopers.betterpickers:library:2.0.0'
      compile 'com.loopj.android:android-async-http:1.4.9'
      compile 'com.squareup.okhttp:okhttp:2.5.0'
      compile 'com.facebook.fresco:fresco:0.7.0'
  
      // FOR GCM
      compile 'com.android.support:multidex:1.0.1'
      compile 'com.google.android.gms:play-services:8.1.0'
  }
  </code></pre>
  
  <p>after trying the answer provided by @JBirdVegas I got this error:</p>
  
  <pre><code>Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
  &gt; com.android.build.transform.api.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_51\bin\java.exe'' finished with non-zero exit value 1
  </code></pre>
  
  <p>this is gradle log:</p>
  
  <pre><code>Note: the configuration refers to the unknown method 'void attachBaseContext(android.content.Context)' in class 'com.emse.emseportal3.App'
  Note: there were 1 references to unknown class members.
        You should check your configuration for typos.
  Note: there were 14 classes trying to access annotations using reflection.
        You should consider keeping the annotation attributes
        (using '-keepattributes *Annotation*').
        (http://proguard.sourceforge.net/manual/troubleshooting.html#attributes)
  Note: there were 20 classes trying to access generic signatures using reflection.
        You should consider keeping the signature attributes
        (using '-keepattributes Signature').
        (http://proguard.sourceforge.net/manual/troubleshooting.html#attributes)
  Note: there were 3 classes trying to access enclosing classes using reflection.
        You should consider keeping the inner classes attributes
        (using '-keepattributes InnerClasses').
        (http://proguard.sourceforge.net/manual/troubleshooting.html#attributes)
  Note: there were 15 unresolved dynamic references to classes or interfaces.
        You should check if you need to specify additional program jars.
        (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclass)
  Note: there were 33 accesses to class members by means of introspection.
        You should consider explicitly keeping the mentioned class members
        (using '-keep' or '-keepclassmembers').
        (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclassmember)
  Note: you're ignoring all warnings!
  Preparing output jar [D:\EmseArge\Mohamad\Android\EmsePortal2\app\build\intermediates\multi-dex\debug\componentClasses.jar]
    Copying resources from program jar [D:\EmseArge\Mohamad\Android\EmsePortal2\app\build\intermediates\transforms\CLASSES\FULL_PROJECT\jarMerging\debug\classes.jar]
  :app:transformClassesWithDexForDebug
  Uncaught translation error: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
  Uncaught translation error: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
  Uncaught translation error: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
  3 errors; aborting
  Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
  &gt; com.android.build.transform.api.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_51\bin\java.exe'' finished with non-zero exit value 1
  Information:BUILD FAILED
  </code></pre>