Reset Search in SearchView when you click on back

Question

I added Search menu item to filter my list. Everything is working fine with filtering and reset filter. But I cannot find a way to reset the filter when user click on back button. Actually when user add some text in search field, the first back click will hide the keyboard, and the second click will collapse search field and remove my search text ... but the list still filtered. What should I do to reset the list?

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.search_menu, menu);

    searchMenuItem = menu.findItem(R.id.action_search);
    SearchView mSearchView = (SearchView) MenuItemCompat.getActionView(searchMenuItem);

    if (mSearchView != null) {
        mSearchView.setIconifiedByDefault(true);
        mSearchView.setOnQueryTextListener(this);
    }
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onQueryTextChange(String s) {
    refreshSearch(s);
    return false;
}

private void refreshSearch(String s) {
    FragmentManager fm = getSupportFragmentManager();
    MyListFragment listFragment = (MyListFragment)fm.getFragments().get(0);
    MyArrayAdapter arrayAdapter = (MyArrayAdapter)listFragment.getListAdapter();
    arrayAdapter.getFilter().filter(s);
}

Edit my question by adding some extra code, that may help to know the reason

@Override
public boolean onQueryTextSubmit(String s) {
    hideKeyboard();
    return false;
}
@Override
public boolean onQueryTextChange(String s) {
    refreshSearch(s);
    return false;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle presses on the action bar items
    switch (item.getItemId()) {
        case R.id.action_search:
            return true;
        default:
            return false; //return super.onOptionsItemSelected(item);
    }
}

Answer 1

I solve the problem by doing this:

searchMenuItem.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {

        @Override
        public boolean onMenuItemActionExpand(MenuItem item) {
            return true;
        }

        @Override
        public boolean onMenuItemActionCollapse(MenuItem item) {
            refreshSearch("");
            return true;
        }
    });