TabHost - Switch - Reload

       super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Resources res = getResources(); // Resource object to get Drawables
        TabHost.TabSpec spec;  // Resusable TabSpec for each tab
        TabHost tabHost = getTabHost();  // The activity TabHost
        Intent intent;  // Reusable Intent for each tab

        
        intent = new Intent().setClass(this, SecTab.class);
        spec = tabHost.newTabSpec("internet").setIndicator("internet")
                      .setContent(intent);
        tabHost.addTab(spec);

        // Do the same for the other tabs
        intent = new Intent().setClass(this, ThirdTab.class);
        spec = tabHost.newTabSpec("button").setIndicator("button")
                      .setContent(intent);
        tabHost.addTab(spec);

        intent = new Intent().setClass(this, FourthTab.class);
        spec = tabHost.newTabSpec("songs").setIndicator("Songs")
                      .setContent(intent);
        tabHost.addTab(spec);

        tabHost.setCurrentTab(1);