I implemented a searchView in Actionbar
final SearchView searchView = (SearchView) MenuItemCompat.getActionView(menu.findItem(R.id.search_item));
searchView.setQueryHint("hint ...");
SearchManager searchManager = (SearchManager) getSystemService(SEARCH_SERVICE);
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
SearchView is not full width