有任何其他方法可以从弹出菜单中隐藏项目吗？请帮忙.

@Override
public boolean onOptionsItemSelected(MenuItem item) {
        // TODO Auto-generated method stub
        switch(item.getItemId()){
        case R.id.addMessage_Action:
            AddMessage();
            break;
        case R.id.dropMenuAction:
            menuItemView = findViewById(R.id.dropMenuAction);
            PopupMenu popup = new PopupMenu(this,menuItemView);
            MenuInflater inflater = popup.getMenuInflater();
            inflater.inflate(R.menu.popupmenu_for_message_delete,popup.getMenu());
            popup.show();
            popup.setOnMenuItemClickListener(this);
            if(Global.lock == true)
                findViewById(R.id.lock_message).setEnabled(false);
            else
                findViewById(R.id.unlock_message).setEnabled(false);

            break;
        }
        return false;

    }