title: Ionic and Building Android project issue
body: <p>So I've been pretty successful building apps on iOS. Today, I wanted to test my app on android device. However, Ive been unsuccessful - when I run a build command for android, I receive the following:</p>
  
  <pre><code>Running command:     /Volumes/SSD/Users/Lukasz/Desktop/app/hooks/after_prepare/010_add_platform_class.js /Volumes/SSD/Users/Lukasz/Desktop/app
  add to body class: platform-android
  Running command:     /Volumes/SSD/Users/Lukasz/Desktop/app/hooks/after_prepare/020_remove_sass_from_pla    tforms.js /Volumes/SSD/Users/Lukasz/Desktop/app
  Running command: /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/cordova/build 
  ANDROID_HOME=/Users/Lukasz/Library/Android/sdk
  JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home
  Running: /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/gradlew cdvBuildDebug -b /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/build.gradle -Dorg.gradle.daemon=true
  :preBuild
  :compileDebugNdk UP-TO-DATE
  :preDebugBuild
  :checkDebugManifest
  :CordovaLib:compileLint
  :CordovaLib:copyDebugLint UP-TO-DATE
  :CordovaLib:mergeDebugProguardFiles UP-TO-DATE
  :CordovaLib:preBuild
  :CordovaLib:preDebugBuild
  :CordovaLib:checkDebugManifest
  :CordovaLib:prepareDebugDependencies
  :CordovaLib:compileDebugAidl UP-TO-DATE
  :CordovaLib:compileDebugRenderscript UP-TO-DATE
  :CordovaLib:generateDebugBuildConfig UP-TO-DATE
  :CordovaLib:generateDebugAssets UP-TO-DATE
  :CordovaLib:mergeDebugAssets UP-TO-DATE
  :CordovaLib:generateDebugResValues UP-TO-DATE
  :CordovaLib:generateDebugResources UP-TO-DATE
  :CordovaLib:packageDebugResources UP-TO-DATE
  :CordovaLib:processDebugManifest UP-TO-DATE
  :CordovaLib:processDebugResources UP-TO-DATE
  :CordovaLib:generateDebugSources UP-TO-DATE
  :CordovaLib:compileDebugJava UP-TO-DATE
  :CordovaLib:processDebugJavaRes UP-TO-DATE
  :CordovaLib:packageDebugJar UP-TO-DATE
  :CordovaLib:compileDebugNdk UP-TO-DATE
  :CordovaLib:packageDebugJniLibs UP-TO-DATE
  :CordovaLib:packageDebugLocalJar UP-TO-DATE
  :CordovaLib:packageDebugRenderscript UP-TO-DATE
  :CordovaLib:bundleDebug UP-TO-DATE
  :prepareAndroidCordovaLibUnspecifiedDebugLibrary UP-TO-DATE
  :prepareDebugDependencies
  :compileDebugAidl UP-TO-DATE
  :compileDebugRenderscript UP-TO-DATE
  :generateDebugBuildConfig UP-TO-DATE
  :generateDebugAssets UP-TO-DATE
  :mergeDebugAssets
  :generateDebugResValues UP-TO-DATE
  :generateDebugResources UP-TO-DATE
  :mergeDebugResources UP-TO-DATE
  :processDebugManifest UP-TO-DATE
  :processDebugResources
  :generateDebugSources
  :compileDebugJavaNote: Some input files use or override a deprecated API.
  Note: Recompile with -Xlint:deprecation for details.
  
  :preDexDebug  
  :dexDebug
  UNEXPECTED TOP-LEVEL EXCEPTION:
  com.android.dex.DexException: Multiple dex files define        Lcom/google/android/gcm/GCMBaseIntentService;
  at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:596)
  at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:554)
  at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:535)
  at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171)
  at com.android.dx.merge.DexMerger.merge(DexMerger.java:189)
  at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:454)
  at com.android.dx.command.dexer.Main.runMonoDex(Main.java:303)
  at com.android.dx.command.dexer.Main.run(Main.java:246)
  at com.android.dx.command.dexer.Main.main(Main.java:215)
  at com.android.dx.command.Main.main(Main.java:106)
  
  FAILED
  
  FAILURE: Build failed with an exception.
  
  What went wrong:
  Execution failed for task ':dexDebug'.
  
  com.android.ide.common.internal.LoggedErrorException: Failed to run command:
  /Users/Lukasz/Library/Android/sdk/build-tools/22.0.1/dx --dex --no-optimize --    output     /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/build/intermediates/dex/de    bug --input-    list=/Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/build/intermediates/t    mp/dex/debug/inputList.txt
  Error Code:
  2
  Output:
  UNEXPECTED TOP-LEVEL EXCEPTION:
  com.android.dex.DexException: Multiple dex files define     Lcom/google/android/gcm/GCMBaseIntentService;
  at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:596)
  at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:554)
  at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:535)
  at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171)
  at com.android.dx.merge.DexMerger.merge(DexMerger.java:189)
  at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:454)
  at com.android.dx.command.dexer.Main.runMonoDex(Main.java:303)
  at com.android.dx.command.dexer.Main.run(Main.java:246)
  at com.android.dx.command.dexer.Main.main(Main.java:215)
  at com.android.dx.command.Main.main(Main.java:106)
  
  Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --    debug option to get more log output.
  
  BUILD FAILED
  
  Total time: 1 mins 20.991 secs
  
  /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/cordova/node_modules/q/q.j    s:126
  throw e;
  ^
  Error code 1 for command:     /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/gradlew with args:     cdvBuildDebug,-    b,/Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/build.gradle,-    Dorg.gradle.daemon=true
  ERROR building one of the platforms: Error:     /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/cordova/build: Command     failed with exit code 8
  You may not have the required environment or OS to build this project
  Error: /Volumes/SSD/Users/Lukasz/Desktop/app/platforms/android/cordova/build:     Command failed with exit code 8
  at ChildProcess.whenDone     (/usr/local/lib/node_modules/cordova/node_modules/cordova-    lib/src/cordova/superspawn.js:134:23)
  at ChildProcess.emit (events.js:98:17)
  at maybeClose (child_process.js:766:16)
  at Process.ChildProcess.handle.onexit (childprocess.js:833:5)
  </code></pre>
  
  <p>This is the versions that I am using : 
  Ionic: 1.3.2
  Cordova 5.1.1
  Java: latest 8.45</p>
  
  <p>Any ideas on what could go wrong?</p>
  
  <p>EDIT:</p>
  
  <pre><code>    /*
         Licensed to the Apache Software Foundation (ASF) under one
         or more contributor license agreements.  See the NOTICE file
         distributed with this work for additional information
         regarding copyright ownership.  The ASF licenses this file
         to you under the Apache License, Version 2.0 (the
         "License"); you may not use this file except in compliance
         with the License.  You may obtain a copy of the License at
  
           http://www.apache.org/licenses/LICENSE-2.0
  
         Unless required by applicable law or agreed to in writing,
         software distributed under the License is distributed on an
         "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
         KIND, either express or implied.  See the License for the
         specific language governing permissions and limitations
         under the License.
      */
  
      // GENERATED FILE! DO NOT EDIT!
  
  apply plugin: 'android'
  
  buildscript {
      repositories {
          mavenCentral()
      }
  
      // Switch the Android Gradle plugin version requirement depending on the
      // installed version of Gradle. This dependency is documented at
      // http://tools.android.com/tech-docs/new-build-system/version-compatibility
      // and https://issues.apache.org/jira/browse/CB-8143
      if (gradle.gradleVersion &gt;= "2.2") {
          dependencies {
              classpath 'com.android.tools.build:gradle:1.0.0+'
          }
      } else if (gradle.gradleVersion &gt;= "2.1") {
          dependencies {
              classpath 'com.android.tools.build:gradle:0.14.0+'
          }
      } else {
          dependencies {
              classpath 'com.android.tools.build:gradle:0.12.0+'
          }
      }
  }
  
  // Allow plugins to declare Maven dependencies via build-extras.gradle.
  repositories {
      mavenCentral()
  }
  
  task wrapper(type: Wrapper) {
      gradleVersion = '2.2.1'
  }
  
  // Configuration properties. Set these via environment variables, build-extras.gradle, or gradle.properties.
  // Refer to: http://www.gradle.org/docs/current/userguide/tutorial_this_and_that.html
  ext {
      apply from: 'CordovaLib/cordova.gradle'
      // The value for android.compileSdkVersion.
      if (!project.hasProperty('cdvCompileSdkVersion')) {
          cdvCompileSdkVersion = null;
      }
      // The value for android.buildToolsVersion.
      if (!project.hasProperty('cdvBuildToolsVersion')) {
          cdvBuildToolsVersion = null;
      }
      // Sets the versionCode to the given value.
      if (!project.hasProperty('cdvVersionCode')) {
          cdvVersionCode = null
      }
      // Sets the minSdkVersion to the given value.
      if (!project.hasProperty('cdvMinSdkVersion')) {
          cdvMinSdkVersion = null
      }
      // Whether to build architecture-specific APKs.
      if (!project.hasProperty('cdvBuildMultipleApks')) {
          cdvBuildMultipleApks = null
      }
      // .properties files to use for release signing.
      if (!project.hasProperty('cdvReleaseSigningPropertiesFile')) {
          cdvReleaseSigningPropertiesFile = null
      }
      // .properties files to use for debug signing.
      if (!project.hasProperty('cdvDebugSigningPropertiesFile')) {
          cdvDebugSigningPropertiesFile = null
      }
      // Set by build.js script.
      if (!project.hasProperty('cdvBuildArch')) {
          cdvBuildArch = null
      }
  
      // Plugin gradle extensions can append to this to have code run at the end.
      cdvPluginPostBuildExtras = []
  }
  
  // PLUGIN GRADLE EXTENSIONS START
  // PLUGIN GRADLE EXTENSIONS END
  
  def hasBuildExtras = file('build-extras.gradle').exists()
  if (hasBuildExtras) {
      apply from: 'build-extras.gradle'
  }
  
  // Set property defaults after extension .gradle files.
  if (ext.cdvCompileSdkVersion == null) {
      ext.cdvCompileSdkVersion = privateHelpers.getProjectTarget()
  }
  if (ext.cdvBuildToolsVersion == null) {
      ext.cdvBuildToolsVersion = privateHelpers.findLatestInstalledBuildTools()
  }
  if (ext.cdvDebugSigningPropertiesFile == null &amp;&amp; file('debug-signing.properties').exists()) {
      ext.cdvDebugSigningPropertiesFile = 'debug-signing.properties'
  }
  if (ext.cdvReleaseSigningPropertiesFile == null &amp;&amp; file('release-signing.properties').exists()) {
      ext.cdvReleaseSigningPropertiesFile = 'release-signing.properties'
  }
  
  // Cast to appropriate types.
  ext.cdvBuildMultipleApks = !!cdvBuildMultipleApks;
  ext.cdvMinSdkVersion = cdvMinSdkVersion == null ? null : Integer.parseInt('' + cdvMinSdkVersion)
  ext.cdvVersionCode = cdvVersionCode == null ? null : Integer.parseInt('' + cdvVersionCode)
  
  def computeBuildTargetName(debugBuild) {
      def ret = 'assemble'
      if (cdvBuildMultipleApks &amp;&amp; cdvBuildArch) {
          def arch = cdvBuildArch == 'arm' ? 'armv7' : cdvBuildArch
          ret += '' + arch.toUpperCase().charAt(0) + arch.substring(1);
      }
      return ret + (debugBuild ? 'Debug' : 'Release')
  }
  
  // Make cdvBuild a task that depends on the debug/arch-sepecific task.
  task cdvBuildDebug
  cdvBuildDebug.dependsOn {
      return computeBuildTargetName(true)
  }
  
  task cdvBuildRelease
  cdvBuildRelease.dependsOn {
      return computeBuildTargetName(false)
  }
  
  task cdvPrintProps &lt;&lt; {
      println('cdvCompileSdkVersion=' + cdvCompileSdkVersion)
      println('cdvBuildToolsVersion=' + cdvBuildToolsVersion)
      println('cdvVersionCode=' + cdvVersionCode)
      println('cdvMinSdkVersion=' + cdvMinSdkVersion)
      println('cdvBuildMultipleApks=' + cdvBuildMultipleApks)
      println('cdvReleaseSigningPropertiesFile=' + cdvReleaseSigningPropertiesFile)
      println('cdvDebugSigningPropertiesFile=' + cdvDebugSigningPropertiesFile)
      println('cdvBuildArch=' + cdvBuildArch)
      println('computedVersionCode=' + android.defaultConfig.versionCode)
      if (android.productFlavors.has('armv7')) {
          println('computedArmv7VersionCode=' + android.productFlavors.armv7.versionCode)
      }
      if (android.productFlavors.has('x86')) {
          println('computedx86VersionCode=' + android.productFlavors.x86.versionCode)
      }
  }
  
  android {
      sourceSets {
          main {
              manifest.srcFile 'AndroidManifest.xml'
              java.srcDirs = ['src']
              resources.srcDirs = ['src']
              aidl.srcDirs = ['src']
              renderscript.srcDirs = ['src']
              res.srcDirs = ['res']
              assets.srcDirs = ['assets']
              jniLibs.srcDirs = ['libs']
          }
      }
  
      defaultConfig {
          versionCode cdvVersionCode ?: Integer.parseInt("" + privateHelpers.extractIntFromManifest("versionCode") + "0")
          if (cdvMinSdkVersion != null) {
              minSdkVersion cdvMinSdkVersion
          }
      }
  
      compileSdkVersion cdvCompileSdkVersion
      buildToolsVersion cdvBuildToolsVersion
  
      if (Boolean.valueOf(cdvBuildMultipleApks)) {
          productFlavors {
              armv7 {
                  versionCode cdvVersionCode ?: defaultConfig.versionCode + 2
                  ndk {
                      abiFilters "armeabi-v7a", ""
                  }
              }
              x86 {
                  versionCode cdvVersionCode ?: defaultConfig.versionCode + 4
                  ndk {
                      abiFilters "x86", ""
                  }
              }
              all {
                  ndk {
                      abiFilters "all", ""
                  }
              }
          }
      } else if (!cdvVersionCode) {
        def minSdkVersion = cdvMinSdkVersion ?: privateHelpers.extractIntFromManifest("minSdkVersion")
        // Vary versionCode by the two most common API levels:
        // 14 is ICS, which is the lowest API level for many apps.
        // 20 is Lollipop, which is the lowest API level for the updatable system webview.
        if (minSdkVersion &gt;= 20) {
          defaultConfig.versionCode += 9
        } else if (minSdkVersion &gt;= 14) {
          defaultConfig.versionCode += 8
        }
      }
  
      compileOptions {
          sourceCompatibility JavaVersion.VERSION_1_6
          targetCompatibility JavaVersion.VERSION_1_6
      }
  
      if (cdvReleaseSigningPropertiesFile) {
          signingConfigs {
              release {
                  // These must be set or Gradle will complain (even if they are overridden).
                  keyAlias = ""
                  keyPassword = "__unset" // And these must be set to non-empty in order to have the signing step added to the task graph.
                  storeFile = null
                  storePassword = "__unset"
              }
          }
          buildTypes {
              release {
                  signingConfig signingConfigs.release
              }
          }
          addSigningProps(cdvReleaseSigningPropertiesFile, signingConfigs.release)
      }
      if (cdvDebugSigningPropertiesFile) {
          addSigningProps(cdvDebugSigningPropertiesFile, signingConfigs.debug)
      }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: '*.jar')
      // SUB-PROJECT DEPENDENCIES START
      debugCompile project(path: ":CordovaLib", configuration: "debug")
      releaseCompile project(path: ":CordovaLib", configuration: "release")
      // SUB-PROJECT DEPENDENCIES END
  }
  
  def promptForReleaseKeyPassword() {
      if (!cdvReleaseSigningPropertiesFile) {
          return;
      }
      if ('__unset'.equals(android.signingConfigs.release.storePassword)) {
          android.signingConfigs.release.storePassword = privateHelpers.promptForPassword('Enter key store password: ')
      }
      if ('__unset'.equals(android.signingConfigs.release.keyPassword)) {
          android.signingConfigs.release.keyPassword = privateHelpers.promptForPassword('Enter key password: ');
      }
  }
  
  gradle.taskGraph.whenReady { taskGraph -&gt;
      taskGraph.getAllTasks().each() { task -&gt;
          if (task.name == 'validateReleaseSigning') {
              promptForReleaseKeyPassword()
          }
      }
  }
  
  def addSigningProps(propsFilePath, signingConfig) {
      def propsFile = file(propsFilePath)
      def props = new Properties()
      propsFile.withReader { reader -&gt;
          props.load(reader)
      }
  
      def storeFile = new File(props.get('key.store') ?: privateHelpers.ensureValueExists(propsFilePath, props, 'storeFile'))
      if (!storeFile.isAbsolute()) {
          storeFile = RelativePath.parse(true, storeFile.toString()).getFile(propsFile.getParentFile())
      }
      if (!storeFile.exists()) {
          throw new FileNotFoundException('Keystore file does not exist: ' + storeFile.getAbsolutePath())
      }
      signingConfig.keyAlias = props.get('key.alias') ?: privateHelpers.ensureValueExists(propsFilePath, props, 'keyAlias')
      signingConfig.keyPassword = props.get('keyPassword', props.get('key.alias.password', signingConfig.keyPassword))
      signingConfig.storeFile = storeFile
      signingConfig.storePassword = props.get('storePassword', props.get('key.store.password', signingConfig.storePassword))
      def storeType = props.get('storeType', props.get('key.store.type', ''))
      if (!storeType) {
          def filename = storeFile.getName().toLowerCase();
          if (filename.endsWith('.p12') || filename.endsWith('.pfx')) {
              storeType = 'pkcs12'
          } else {
              storeType = signingConfig.storeType // "jks"
          }
      }
      signingConfig.storeType = storeType
  }
  
  for (def func : cdvPluginPostBuildExtras) {
      func()
  }
  
  // This can be defined within build-extras.gradle as:
  //     ext.postBuildExtras = { ... code here ... }
  if (hasProperty('postBuildExtras')) {
      postBuildExtras()
      }
  </code></pre>