title: Progressbar for two or more operations
body: <p>I have this code in doInBackground method of an AsyncTask:</p>
  
  <pre><code>    for (int i = 0; i &lt; lenght; i++) {
          // Do something
  
          count++;
          publishProgress(count * 100 / lenght);
      }
  </code></pre>
  
  <p>and all works fine. If i add another operation, how to reflect this with the progress bar?</p>
  
  <p>Now i have this code:</p>
  
  <pre><code>    for (int i = 0; i &lt; lenght1; i++) {
          // Do something
  
          count++;
          publishProgress(count * 100 / lenght1);
      }
  
      for (int i = 0; i &lt; lenght2; i++) {
          // Do something 
  
          count++;
          publishProgress(count * 100 / lenght2);
      }
  </code></pre>
  
  <p>How to make the bar start from 0 when operation 1 starts and finish at 100 when operation 2 ends? I tried to change count*100 to count*50 but it seems not to be the right way...</p>