java - 按降序对 jsonarray 数据进行排序

Question

[
{
  "id":"1",
  "created_at":"2019-08-19 02:54:36",
  "updated_at":"2019-09-04 15:00:05"
},
{
  "id":"2",
  "created_at":"2019-08-27 08:59:18",
  "updated_at":"2019-09-04 14:59:14"
},
{
  "id":"4",
  "created_at":"2019-08-29 20:19:54",
  "updated_at":"2019-09-04 14:58:53"
}
]

如何根据“created_at”(2019-08-30,2019-08-29)数据按降序对json数据进行排序，并将值设置为android中的textview。

Answer 1

请尝试一下

public static JSONArray sortJsonArray(JSONArray array) {
List<JSONObject> jsons = new ArrayList<JSONObject>();
for (int i = 0; i < array.length(); i++) {
    jsons.add(array.getJSONObject(i));
}
Collections.sort(jsons, new Comparator<JSONObject>() {
    @Override
    public int compare(JSONObject lhs, JSONObject rhs) {
        String lid = lhs.getString("created_at");
        String rid = rhs.getString("created_at");
        // Here you could parse string id to integer and then compare.
        return lid.compareTo(rid);
    }
});
return new JSONArray(jsons);
}