对List集合嵌套了map集合的排序

如题,一个List> Lists = new ArrayList>();
怎么才能对它进行排序呢?

通过函数Collections.sort进行排列:


private String[] namelist = {"Id", "UserId", "UserNo", "Name", "TypeId", "Money", "Remark", "PassCode", "Order_no", "AddTime"};
private String[] keylist = {"id", "userid", "username", "name", "type", "money", "remark", "passcode", "ordernumber", "addtime"};

id是我map里面的字段,是自增的
 Collections.sort(str, new Comparator, String>>() {
                            @Override
                            public int compare(Map, String> o1, Map, String> o2) {
                                String n1=o1.get("id");
                                String n2=o2.get("id");
//                                我这里是从大到小的排序,如果从小到大,n1n2换一下位置就可以了
                                return n2.compareTo(n1);
                            }
                        });
                        



然后使用增强for循环遍历出整个map集合所有数据的
List, String>> list=new ArrayList, String>>();
for (Map,String> map:str){
    list.add(map);
}




我这里的数据是要匹配到listview上的,所以添加到新的list之后,直接用适配器直接适配上去
 
  



                    public void doResults(List, String>> str) {
                            if (moneyList != null) {
                                moneyList.clear();
                            }

                        Collections.sort(str, new Comparator, String>>() {
                            @Override
                            public int compare(Map, String> o1, Map, String> o2) {
                                String n1=o1.get("id");
                                String n2=o2.get("id");
//                                我这里是从大到小的排序,如果从小到大,n1n2换一下位置就可以了
                                return n2.compareTo(n1);
                            }
                        });
                        
                        List, String>> list=new ArrayList, String>>();
                        for (Map,String> map:str){
                            list.add(map);
                        }

                            moneyList.addAll(list);
                            adapter = new MoneyAdapter(MoneyChargeActivity.this, moneyList);
                            mXListView.setAdapter(adapter);

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