title: package com.google.common.collect does not exist
body: <p>Using Android studio -.5.1. </p>
  
  <p>When editing my class with the following import statements no errors show and I can use all the auto complete function of the editor.</p>
  
  <p>import com.google.common.collect.ArrayListMultimap;<br>
  import com.google.common.collect.Multimap;  </p>
  
  <p>But when I actually try to run I get the following.</p>
  
  <p>Error:(3, 33) error: package com.google.common.collect does not exist </p>
  
  <p>Obviously my set up is wrong somewhere but I have no idea where to look. There are dozens of similar questions but nothing seems to be explicit enough to enable me to correct the problem.</p>
  
  <p><b>Build errors:</b></p>
  
  <pre><code>Information:Gradle tasks [:app:assembleDebug]
  Information:11 errors
  Information:12 errors
  Information:0 warnings
  Information:See complete output in console
  Error:Execution failed for task ':app:compileDebugJava'.
  &gt; Compilation failed; see the compiler error output for details.
  C:\Program Files\Android Studio\MultiLevelList\app\src\main\java\com\multilevellist\StockMatrix.java
  Error:(3, 33) error: package com.google.common.collect does not exist
  Error:(4, 33) error: package com.google.common.collect does not exist
  Error:(7, 13) error: cannot find symbol class Multimap
  Error:(7, 31) error: cannot find symbol class Multimap
  Error:(8, 13) error: cannot find symbol class Multimap
  Error:(8, 31) error: cannot find symbol class Multimap
  Error:(9, 13) error: cannot find symbol class Multimap
  Error:(7, 70) error: cannot find symbol variable ArrayListMultimap
  Error:(8, 70) error: cannot find symbol variable ArrayListMultimap
  Error:(25, 14) error: cannot find symbol class Multimap
  Error:(26, 36) error: cannot find symbol class Multimap
  </code></pre>
  
  <p><b>build.gradle:</b></p>
  
  <pre><code>apply plugin: 'android'
  
  android {
      compileSdkVersion 19
      buildToolsVersion "19.0.1"
  
      defaultConfig {
          minSdkVersion 8
          targetSdkVersion 19
          versionCode 1
          versionName "1.0"
      }
      buildTypes {
          release {
              runProguard false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
          }
      }
  }
  
  dependencies {
      compile 'com.android.support:appcompat-v7:+'
      compile fileTree(dir: 'libs', include: ['*.jar'])
  }
  </code></pre>