title: IDE "Cannot Resolve @style/Theme.Appcompat" when using v7 compatibility support theme
body: <p>This is not really a huge issue, as my project still builds and runs correctly (using gradle), but I'm having trouble getting Android Studio to recognize the application compatibility theme released in the API 18 SDK (for allowing actionbar support for android 2.1 and above).</p>
  
  <p>I have the support libraries loading successfully, because code completion is possible for the ActionBar classes in java files.  The issue is that Android studio shows red text errors for assignments to the Theme.AppCompat.Light in the AndroidManifest.xml.</p>
  
  <p>Is there a way to enable code completion for theme resources declared in the manifest from external libraries in Android Studio?</p>
  
  <p><strong>Updated</strong> Here is my <code>&lt;activity&gt;</code> block from my AndroidManifest:</p>
  
  <pre><code>&lt;activity
      android:name="com.example.activities.MainActivity"
      android:label="@string/app_name"
      android:screenOrientation="portrait"
      android:theme="@style/Theme.AppCompat.Light" &gt;
  </code></pre>
  
  <p>I've also tried setting the theme in the application block:</p>
  
  <pre><code>&lt;application
      android:allowBackup="true"
      android:icon="@drawable/main_final_ic"
      android:label="@string/app_name"
      android:logo="@drawable/main_final_enzo"
      android:theme="@style/Theme.AppCompat.Light" &gt;
  </code></pre>
  
  <p>Again, these both work and compile OK, but appear as red text with errors in my IDE.  I've also just confirmed that the same issues are occurring when running my project in eclipse.</p>