I’ll expand on @user1258568 ‘s answer for the lazy. This worked for me. Note that it clears your query when focus is lost.
final MenuItem searchMenuItem = optionsMenu.findItem(R.id.search);
final SearchView searchView = (SearchView) searchMenuItem.getActionView();
searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View view, boolean queryTextFocused) {
if(!queryTextFocused) {
searchMenuItem.collapseActionView();
searchView.setQuery("", false);
}
}
});