Tab bar not showing in activity
===

I have a tab bar that I want to add to multiple activities. I have a `TabController.java` which looks like this
    
    import android.app.TabActivity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.widget.TabHost;
    import android.widget.TabHost.TabSpec;

    public class TabController extends TabActivity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tabcontroller);

        TabHost tabHost = getTabHost();           
        Intent intent;  
  
        intent = new Intent().setClass(this, Help.class);  
        TabSpec specHelp = tabHost.newTabSpec("Help").setIndicator("Help")  
                      .setContent(intent);  
          
  
        intent = new Intent().setClass(this, Services.class);  
        TabSpec specServices = tabHost.newTabSpec("Services").setIndicator("Services")  
                      .setContent(intent);  
         
  
        intent = new Intent().setClass(this, Inbox.class);  
        TabSpec specInbox = tabHost.newTabSpec("Inbox").setIndicator("Inbox")  
                      .setContent(intent);  
          
  
        intent = new Intent().setClass(this, About.class);  
        TabSpec specAbout = tabHost.newTabSpec("About").setIndicator("About")  
                      .setContent(intent);  
        
        
        intent = new Intent().setClass(this, More.class);  
        TabSpec specMore = tabHost.newTabSpec("More").setIndicator("More")  
                      .setContent(intent);  
        
        tabHost.addTab(specHelp); 
        tabHost.addTab(specServices); 
        tabHost.addTab(specInbox);
        tabHost.addTab(specAbout);        
        tabHost.addTab(specMore);
    }

and a `tabcontroller.xml`

    <?xml version="1.0" encoding="utf-8"?>
    <merge xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <TabHost android:layout_width="fill_parent"
       android:layout_height="fill_parent"
       android:id="@android:id/tabhost" >

       <RelativeLayout
           android:layout_width="fill_parent"
		   android:layout_height="fill_parent">
		
		   <TabWidget android:id="@android:id/tabs"
		       android:layout_width="fill_parent"
		       android:layout_alignParentBottom = "true" 
		       android:layout_height="wrap_content" />
		
		   <FrameLayout android:id="@android:id/tabcontent"
		       android:layout_width="fill_parent"
		       android:layout_height="fill_parent">
		   </FrameLayout>
		   
	   </RelativeLayout>

       </TabHost>
    </merge>

What I want to do with that is to add that layout to multiple activities. When I try and add the layout I use `<include layout="@layout/tabcontroller"/>`. When I run the project my tab bar does not appear on the screen. 

How can I add this tab bar to my activities? PS. `TabController.java` is not my main activity