Tab layout becomes invisible when come back from other activity
public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Log.d("prabhu", "In tab .....");
        context = this;
        tabHost = (TabHost)findViewById(android.R.id.tabhost);
        tabHost.setup();

        /* TabSpec used to create a new tab.
         * By using TabSpec only we can able to setContent to the tab.
         * By using TabSpec setIndicator() we can set name to tab. */

        /* tid1 is firstTabSpec Id. Its used to access outside. */
        TabSpec firstTabSpec = tabHost.newTabSpec("tid1");
        TabSpec secondTabSpec = tabHost.newTabSpec("tid2");
        TabSpec thirdTabSpec = tabHost.newTabSpec("tid3");
        TabSpec fourthTabSpec = tabHost.newTabSpec("tid4");

        /* TabSpec setContent() is used to set content for a particular tab. */
        Intent t1 = new Intent(this,Activity1.class);
        firstTabSpec.setContent(t1);
        firstTabSpec.setIndicator("Activity1");

        Intent t2 = new Intent(this,Activity2.class);
        secondTabSpec.setContent(t2);
        secondTabSpec.setIndicator("Activity2");

        Intent t3 = new Intent(this,Activity3.class);
        thirdTabSpec.setContent(t3);
        thirdTabSpec.setIndicator("Activity3");



        Intent t4 = new Intent(this,Activity4.class);
        fourthTabSpec.setContent(t4);
        fourthTabSpec.setIndicator("Activity4");

        /* Add tabSpec to the TabHost to display. */
        tabHost.addTab(firstTabSpec);
        tabHost.addTab(secondTabSpec);
        tabHost.addTab(thirdTabSpec);
        tabHost.addTab(fourthTabSpec);

        tabHost.getTabWidget().getChildAt(0).getLayoutParams().height =45;
        tabHost.getTabWidget().getChildAt(1).getLayoutParams().height =45;
        tabHost.getTabWidget().getChildAt(2).getLayoutParams().height =45;
        tabHost.getTabWidget().getChildAt(3).getLayoutParams().height =45;

        for(int i=0;i<tabHost.getTabWidget().getChildCount();i++)
        {
            tabHost.getTabWidget().getChildAt(i).setBackgroundColor(Color.parseColor("#AEDB00")); //unselected
        }

        tabHost.setOnTabChangedListener(new OnTabChangeListener(){

            public void onTabChanged(String tabId) {
                for(int i=0;i<tabHost.getTabWidget().getChildCount();i++)
                {
                    tabHost.getTabWidget().getChildAt(i).setBackgroundColor(Color.parseColor("#AEDB00")); //unselected
                }
                tabHost.getTabWidget().getChildAt(tabHost.getCurrentTab()).setBackgroundColor(Color.parseColor("#B33E5D")); // selected

            }});