title: Setting Map Type in Android, constant problems
body: <p>I am playing around with com.example.mapdemo, all java files compile except the LayersDemoActivity.java which contains</p>
  
  <pre><code>private void setLayer(String layerName) {
      if (!checkReady()) {
          return;
      }
      if (layerName.equals(getString(R.string.normal))) {
          mMap.setMapType(MAP_TYPE_NORMAL);
      } else if (layerName.equals(getString(R.string.hybrid))) {
          mMap.setMapType(MAP_TYPE_HYBRID);
      } else if (layerName.equals(getString(R.string.satellite))) {
          mMap.setMapType(MAP_TYPE_SATELLITE);
      } else if (layerName.equals(getString(R.string.terrain))) {
          mMap.setMapType(MAP_TYPE_TERRAIN);
      } else {
          Log.i("LDA", "Error setting layer with name " + layerName);
      }
  }
  </code></pre>
  
  <p>the compiler doesn't recognizes MAP_TYPE_NORMAL, MAP_TYPE_HYBRID etc. constants. What is it wrong?</p>