title: How to inflate another xml on clicking a button
body: <p>I have one <code>Activity</code> in that there are no <code>Button</code>s but I have coded it in such a way that another <code>Activity</code> comes, now in this second <code>Activity</code> there are three <code>Button</code>s, on which when I click all inflating different respective activities. 
  In this second <code>Activity</code> there I have added one more <code>Button</code>, on clicking this 4th <code>Button</code> I don't want another <code>Activity</code> to come in foreground instead i just want another layout to be inflated(I don't wanna change the <code>Activity</code>)
  In that layout(which i need to inflate) I have a <code>ListView</code> which has a list of certain sites, when this layout is inflated the list of sites should be shown and as i click on there sites its should take me to that webpage.</p>
  
  <p><strong>PROBLEM 1:</strong> 
  How to inflate just the <code>xml</code> on click of the 4th <code>Button</code> without changing the <code>Activity</code>.</p>
  
  <p><strong>PROBLEM 2:</strong>
  When the <code>xml</code> is inflated and if I click on <code>BackButton</code> the <code>Activity</code> containing all the 4 <code>Button</code>s should be displayed.</p>
  
  <p>Here is the code that I'm using to inflate another <code>xml</code>:</p>
  
  <pre><code>fourthButton.setOnClickListener(new OnClickListener(){
      @Override
      public void onClick(View v) {
          callingMore();
      }
  });
  private void callingMore() {
      LayoutInflater inflater = getLayoutInflater();
      View layout = inflater.inflate(R.layout.web_site_list_xml, (ViewGroup)findViewById(R.id.site_list));
  }
  </code></pre>
  
  <p>BUT this code gives a force close and no <code>xml</code> is being inflated and if I use <code>setContentView( R.layout.web_site_list_xml)</code> inside  <code>callingMore()</code> method
  the <code>xml</code> is inflated but that <code>xml</code> doesn't show anything and then if I hit <code>BackButton</code>, the <code>Activity</code> that has all 4 <code>Button</code>s isn't shown.</p>