Resetting Search Widget (SearchView) value

I've got 2 activites : the first, HomepageActiviy, have a search widget that search data using another activity, SearchActivity.

What I want to do is when I go back from SearchActiviy to HomepageActivity, the search widget go collapsed and with a empty text.

I've tried to do this following thing :

public class HomepageActivity extends Activity {
    @TargetApi(11)
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.projectslist, menu);

        if(Build.VERSION.SDK_INT >= 11) {
            SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
            SearchView searchView = (SearchView) menu.findItem(R.id.homepage_search).getActionView();
            ComponentName component = new ComponentName(this, SearchActivity.class);
            searchView.setSearchableInfo(searchManager.getSearchableInfo(component));
            searchView.setIconifiedByDefault(true);
            searchView.setQuery("", false);

        }

        return super.onCreateOptionsMenu(menu);
    }

    […]

    @TargetApi(11)
    @Override
    protected void onRestart() {
        super.onRestart();
        if(Build.VERSION.SDK_INT >= 11)
            invalidateOptionsMenu();
        launchAsynchronousImageDownload();
    }
}

If the widget is well displayed as collapsed, the text in the widget still remember searched text (after I re-open the widget). How can I reset the text of the widget?

Thanks for any help! ;)