如何在android中单击搜索图标时隐藏工具栏中的菜单项

Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if (id == R.id.action_search) {
        // 单击搜索图标时，隐藏菜单项
        invalidateOptionsMenu();
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@Override
public boolean onPrepareOptionsMenu(Menu menu) {
    MenuItem menuItem = menu.findItem(R.id.action_search);
    menuItem.setVisible(false); // 隐藏菜单项
    return super.onPrepareOptionsMenu(menu);
}