title: Android [SupportMapFragment] The method findViewById(int) is undefined for the type
body: <pre><code>public class PlaceMapsFragment extends SupportMapFragment {
      private GoogleMap mMap;
  
      @Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container,
              Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          View v = inflater.inflate(R.layout.fragment_place_maps, container,
                  false);
  
  
          setUpMapIfNeeded();
          return v;
      }
  
      private void setUpMapIfNeeded() {
          if (mMap == null) {
              mMap = ((MapView) findViewById(R.id.map)).getMap();
              if (mMap != null) {
                  setUpMap();
              }
          }
      }
  
      private void setUpMap() {
          mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title(
                  "Marker"));
      }
  }
  </code></pre>
  
  <p><strong>Error</strong></p>
  
  <pre><code>The method findViewById(int) is undefined for the type PlaceMapsFragment
  </code></pre>