title: Open Info Activity without closing Main Activity
body: <p>I'm making a simple android application with two activities. one MainActivity and one InfoActivity. I have a button on my ActionBar and on click I want to open my InfoActivity. In my InfoActivity I have a back button, that removes my InfoActivity and open my MainActivity again. Can I open the InfoActivity without closing my MainActivity?</p>
  
  <p>I'm parsing JSON from internet my Main Activity, and I don't want it to load everything again when I close the InfoActivity.</p>
  
  <p>Code for opening InfoActivity:</p>
  
  <pre><code>  private View.OnClickListener onInfoBtnClick = new View.OnClickListener() {
          @Override
          public void onClick(View v) {
  
              Intent intent = new Intent(MainActivity.this, InfoActivity.class);
              startActivity(intent);
          }
      };
  </code></pre>
  
  <p>Code for closing InfoActivity in InfoActivity class:</p>
  
  <pre><code>private View.OnClickListener onBackBtnClick = new View.OnClickListener() {
      @Override
      public void onClick(View v) {
          Intent intent = new Intent(InfoActivity.this, MainActivity.class);
          startActivity(intent);
      }
  };
  </code></pre>