How to change the icon of tab host once setup? (Android)

Question

Hello,

I am trying to change the Icon of one of the tabs of tab host at run time. I am not able to figure out hwo to do with the widget. could some one let me know how its done ?

 spec = tabHost.newTabSpec("hello").setIndicator("hello",
       res.getDrawable(R.drawable.tab1)).setContent(intent);
 tabHost.addTab(spec)

The xml file is as below selector xmlns:android="http://schemas.android.com/apk/res/android" -- When selected, use grey -- item android:drawable="@drawable/icon1" android:state_selected="true" /> -- When not selected, use white- item android:drawable="@drawable/icon1" /selector

Thanks , Titus