关于用jav的List对象用add方法报空指针错误

...
List<MemberInfoTable>  memberInfoTables;

...
query.findObjects(new FindListener<MemberInfoTable>() {    @Override    public void done(List<MemberInfoTable> list, BmobException e) {        if(e==null){            for (MemberInfoTable memberInfo : list) {                memberInfoTables.add(memberInfo);            }        }else{            Log.i("bmob","失败："+e.getMessage()+","+e.getErrorCode());        }    }

主要是由于对象未实例化..