android - JSONObject.toString() 将内部 JSONArray 转换为 Android 中的字符串

Question

我正在创建一个 JSON 请求，如下所示:

JSONObject request = new JSONObject();
request.put("ID", "35");
    request.put("password", "password");
    List<JSONObject> fieldList = new ArrayList<>();
    for (int i = 0; i < 3; i++) {
        fieldList.add(new JSONObject()
                 .put("unitid", "unitid " + i)
                 .put("price", "Price " + i));
    }

request.put("unitsummary", new JSONObject()
       .put("unitsummarydetail", fieldList)
);

String requestString = request.toString();

requestString 变量的值应该是:

{
  "ID": "35",
  "password": "password",
  "unitsummary": {
    "unitsummarydetail": [
      {
        "price": "Price 0",
        "unitid": "unitid 0"
      },
      {
        "price": "Price 1",
        "unitid": "unitid 1"
      },
      {
        "price": "Price 2",
        "unitid": "unitid 2"
      }
    ]
  }
}

但它是:

{
  "ID": "35",
  "password": "password",
  "unitsummary": {
    "unitsummarydetail": "[{\"unitid\":\"unitid 0\",\"price\":\"Price 0\"}, {\"unitid\":\"unitid 1\",\"price\":\"Price 1\"}, {\"unitid\":\"unitid 2\",\"price\":\"Price 2\"}]"
  }
}

它正在将 unitsummarydetail 转换为字符串。 我试过但没有在互联网上找到类似的问题或任何解决方案。 我的代码有什么问题还是库的行为？

欢迎任何想法或解决方案代码 fragment 。

谢谢。

Answer 1

使用 JSONArray 而不是 ArrayList。

JSONObject request = new JSONObject();
request.put("ID", "35");
request.put("password", "password");
JSONArray fieldList = new JSONArray();
for (int i = 0; i < 3; i++) {
fieldList.put(new JSONObject() .put("unitid", "unitid " + i)      .put("price", "Price " + i));
}
request.put("unitsummary", new JSONObject() .put("unitsummarydetail",   fieldList) );
String requestString = request.toString();

输出:

{"ID":"35","password":"password","unitsummary":{"unitsummarydetail":[{"unitid":"unitid 0","price":"Price 0"},{"unitid":"unitid 1","price":"Price 1"},{"unitid":"unitid 2","price":"Price 2"}]}}