title: What is the purpose of using moveTaskToBack() method in android?
body: <p>I am using moveTaskToBack() method in my activity.</p>
  
  <p>When I am pressing back button the activity still is visible. The back key does not work. What did I do wrong here? I want to navigate back to the previous activity.</p>
  
  <pre><code>public void onBackPressed() {
      // TODO Auto-generated method stub
      moveTaskToBack(true);
      new Finalizer().killApp(false);
      super.onBackPressed();
  }
  </code></pre>