I added some code to oncreate options menu like this
SearchManager searchManager =
(SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView =
(SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(
searchManager.getSearchableInfo(getComponentName()));
Also I created a xml file in xml directory and I did what is said in this.But I don't know how to pass search query and get the result. Executing this getting action bar disappeared.