title: Check if android activity is the first start
body: <p>I want that task is eseguite only time. When i return in this activity doesn't eseguite</p>
  
  <pre><code>public void onStart() {
      super.onStart();
      if (mMovies.le) {
          TaskClass nuovo = new TaskClass();
          nuovo.execute("http://api.themoviedb.org/3/discover/movie?sort_by=popularity.desc&amp;");
          Log.v("prova", "inizio");
      }
  
  }
  </code></pre>