title: Error: String types not allowed (at 'screenOrientation' with value 'sensorPortait')
body: <p>I imported android project an I got 3 errors </p>
  
  <pre><code>error: Error: String types not allowed (at 'screenOrientation' with value 'sensorPortait'). AndroidManifest.xml /com.cartmillimaging.fishingmate.MapViewActivity    line 16 Android AAPT Problem
  </code></pre>
  
  <p>same error on different lines.</p>
  
  <pre><code>&lt;activity android:name=".MapViewActivity" android:screenOrientation="sensorPortait"&gt;
  </code></pre>
  
  <p>For project build target I have selected  Google APIs 2.3.3. 10.
  I also enabled Java compiler project specific settings and put compiler compliance error to 1.6.</p>
  
  <p>I am new to android development, so can you help me?</p>