title: The method getApplicationContext() - how to use without Activity
body: <p>I have a async task called within an activity:</p>
  
  <pre><code>    public class DownloadFile extends AsyncTask&lt;String, Integer, String&gt;{
  protected String doInBackground(String... url) {
  </code></pre>
  
  <p>Because of that there's some things I cannot do, one of those it's using getApplicationContext()</p>
  
  <p>There's any way to solve this problem?</p>