java - java中将json转换为字符串

Question

如何将复杂的 json 对象放入字符串数组中？

JSON 示例

{
  "FriendsList": [
    {
      "username": "ChanServ",
      "avatar": "http:\/\/clavatars.photos-box.org\/chack.jpg"
    },
    {
      "username": "kroot",
      "avatar": "http:\/\/clavatars.photos-box.org\/land2.jpg"
    },
    {
      "username": "morrildl",
      "avatar": "http:\/\/clavatars.photos-box.org\/land3.jpg"
    },
    {
      "username": "addo",
      "avatar": "http:\/\/clavatars.photos-box.org\/land8.jpg"
    }
  ]
}

这是代码:

protected void onPostExecute(String result) {
    super.onPostExecute(result);
    JSONObject json;
    try {
        json = new JSONObject(result);
        tvhttp.setText(json.toString(2));
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

Answer 1

试试这个

JSONObject json = null;
    try {
        json = new JSONObject(result);
        JSONArray jsonArray = json.getJSONArray("FriendsList");

        for (int j = 0; j < jsonArray.length(); j++) {

            JSONObject jsonObjectData1 = jsonArray.getJSONObject(j);

            String username = jsonObjectData1.getString("username");
            String avatar = jsonObjectData1.getString("avatar");
        }

    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }