Android 从Json中删除Json值

我想从下面的json文件中删除json值

这是我的json对象：

{
  "Approximation": {
    "name": "Approximation",
    "description": [
      "Approximation",
      "Approximation",
      "Approximation"
    ],
    "video": [
      "evideo/package1/maths/Approximation/349188_f2ba28819a74355a456ef91d95451b71/349188_f2ba28819a74355a456ef91d95451b71/349188.mpd",
      "evideo/package3/maths/approxomation/396183_Approximation/396183_fcedf516e0f5c935d561d486058fa6e0/396183.mpd",
      "evideo/package2/maths/approxomation/387010_01approximation/387010_949440b1082fea19faa7dcb4aebf0b43/387010.mpd"
    ]
  }
}

这就是我正在尝试的

代码：

for (int i = 0; i < jsonArr.length(); i++) {

            JSONObject jsonObj = jsonArr.getJSONObject(i);
            jsonArr.remove(i);
            children = new ArrayList<ChildrenEvent>();
            et = new Events(jsonObj.optString("name"));
            ct = new ChildrenEvent(jsonObj.optString("description"));
            langs.add(et);
            children.add(ct);
  }

for（int i=0；i

JsonObject中有一个方法，即remove（）。它将帮助您从jsonObject中删除任何键

使用以下命令：-

jsonObject.remove("key");

---

我不确定你在这里想要实现什么。您无需删除“近似”键即可获得数据

这就是解析这个JSON的方法

{
    "Approximation": {
        "name": "Approximation",
        "description": ["Approximation", "Approximation", "Approximation"],
        "video": ["evideo/package1/maths/Approximation/349188_f2ba28819a74355a456ef91d95451b71/349188_f2ba28819a74355a456ef91d95451b71/349188.mpd", "evideo/package3/maths/approxomation/396183_Approximation/396183_fcedf516e0f5c935d561d486058fa6e0/396183.mpd", "evideo/package2/maths/approxomation/387010_01approximation/387010_949440b1082fea19faa7dcb4aebf0b43/387010.mpd"]
    }
}

代码

JSONObject mainObj=新的JSONObject（json_字符串）；
JSONObject appproxObj=mainObj.getJSONObject（“近似”）；
//解析名称
String name=appproxObj.getString（“名称”）；
et=新事件（名称）；
langs.add（et）；
//解析描述
JSONArray descriptions=appproxObj.getJSONArray（“description”）；
children=newarraylist（）；
对于（int i=0；i

---

但是，如果您需要不带关键字“Approximation”的

JSON

，变量

appproxObj

有不带关键字的

JSON

。

那么您的问题是什么？我想从JSON中删除单词“Approximation”：并保存在approxobj的列表数组中，在哪个关键字下？在

JSON

{“Approximation”：{“name”：“Approximation”，“description”：[]}}中多次出现“Approximation”。当数组生成时

JSONObject mainObj = new JSONObject(json_string);
JSONObject appproxObj = mainObj.getJSONObject("Approximation");

// Parse name
String name = appproxObj.getString("name");
et = new Events(name);
langs.add(et);

// Parse descriptions
JSONArray descriptions = appproxObj.getJSONArray("description");
children = new ArrayList<ChildrenEvent>();
for (int i = 0; i < descriptions.length(); i++ ) {
    String description = descriptions.getString(i);
    ct = new ChildrenEvent(description);
    children.add(ct);       
}