title: When asynctask in activity finishes how to reload ui in fragment?
body: <p>My activity loads a fragment and starts an AsyncTask.</p>
  
  <pre><code> class GetParkingAreasAsync extends AsyncTask&lt;String, String, String&gt; {
  
  
      @Override
      protected String doInBackground(String... args) {
  
          return mRepository.getParkingAreas(mContext.getActiveUser());
      }
  
      @Override
      protected void onPostExecute(String value) {
          for (int i=0; i&lt;mContext.getActiveUser().getParkingAreas().size(); i++){
              Log.i(TAG_areas, "parking area " + i +": " + mContext.getActiveUser().getParkingAreas().get(i).getName());
          }
      }
  }
  </code></pre>
  
  <p>This Asynctask in the Activity loads some data (I store in the context). When it finishes how can I reload the UI in fragment to show the data loaded (in the parent Activity)?</p>