从Android Studio加载多层JSON文件的不一致

Question

am新的使用JSON文件，我已经构建了一个分层的JSON对象，我试图在Android Studio Toast中显示值希望它们显示出来，但他们在此过程中展示了，请指导做错了什么

这是JSON文件的一部分（JSON数组中的单个对象）

 {
    "county": "Nyeri",
    "subcounty": ["Kieni East", [{
        "ward": ["funny", [{
            "policestation": ["null"]
        }], "kkkkk", [{
            "policestation": ["null"]
        }]]
    }], "Kieni West", [{
        "ward": "null"
    }], "Mathira East", [{
        "ward": ["Magutu", [{
            "policestation": ["Magutu", [{
                "arbitrator": ["null"]
            }], "Magutu ps", [{
                "arbitrator": ["null"]
            }], "Kagochi PS", [{
                "arbitrator": ["null"]
            }]]
        }], "Iriani", [{
            "policestation": ["null"]
        }], "Konyu", [{
            "policestation": ["null"]
        }], "Kirimukuyu", [{
            "policestation": ["null"]
        }], "Karatina Town", [{
            "policestation": ["Kagochi PS", [{
                "arbitrator": ["null"]
            }], "Gitunduti PS", [{
                "arbitrator": ["christopher bundi", "silvester kasanga"]
            }]]
        }]]
    }], "Mukurweini", [{
        "ward": "null"
    }], "Tetu", [{
        "ward": ["rulie", [{
            "policestation": ["null"]
        }]]
    }]]
 }

这是代码，并试图访问子县，但不包括Wardslist的键

  try {
  JSONArray jsonArray = new JSONArray (response);
 for (int i = 0; i < jsonArray.length (); i++) {
   JSONObject jsonObject = jsonArray.getJSONObject (i);
  String subcounty = jsonObject.getString ("subcounty");
  Toast.makeText (getApplicationContext (), subcounty, Toast.LENGTH_LONG).show ();}//close try and catch follows

挑战是选择免除那些关键值的子县值。谢谢您提供支持

Answer 1

通过将数组修改为正确的格式，即[{{ "县"："蒙巴萨"， "子县"：[{{ " subcountyname"：" mtwapa"， "病房"：[{{ " Wardname"：" Funny"， "警察局"： [{ "站点"：" Magutu PS"， "仲裁员"：[{{ "仲裁名称"："克里斯托弗·邦迪" ]] ]] ]] }，{ " subcountyname"：" likoni"， "病房"：[{{ " Wardname"：" null" ]] }，{ " subcountyname"：" hihi"， "病房"：[{{ " Wardname"：" null" ]] }，{ " subcountyname"：" mambo"， "病房"：[{{ " Wardname"：" null" ]] ]]}，{ "县"：" Kwale"， "子县"：[{{ " subcountyname"：" null" ]]]]然后，我可以通过循环访问数组中的数据通过初始数组中的对象。在此级别上，我可以在该级别上获取数组，在该数组中获取对象子标题，依此类推，依此类推，以便更好地清晰，请参阅Android

Answer 2

使用以下代码和jsonformat，我希望这会有所帮助。

String response = "[{"name":"Country 1", "subs": ["sub1","sub2","sub3"] },{"name":"Country 2", "subs": ["subWest1","subWest2","subWest3"] }]";
        try{
            JSONArray mainList = new JSONArray(response);
            ArrayList<String>   countries   =   new ArrayList<>();
            ArrayList<String>   subs   =   new ArrayList<>();
            for (int a=0;a<mainList.length();a++){
                JSONObject object=mainList.getJSONObject(a);
                countries.add(object.getString("name"));
                subs.add(object.getString("subs"));
            }
            setAdapterForCountries(countries);
        }catch(JSONException e){
            e.printStackTrace();
        }

在项目上选择回调

////On Item Select
            JSONArray   subCountries    =   new JSONArray(subs.get(selectedItemPosition));
            setSubCountiresAdapter(subCountries);

这就是您从该jsonarray获取字符串列表的方式。

private void setSubCountiresAdapter(JSONArray   subs){
    ArrayList<String>   subsNames   =   new ArrayList<>();
    for (int a=0;a<subs.length();a++){
        try {
            subsNames.add(subs.getString(a));
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}