在android中正确解析

Question

抱歉我的英文。我不知道我是否正确解析。我有json字符串

    {
        "TypeCar": {
            "1": {
                "type": "1",
                "id": "1"
            },
            "2": {
                "type": "1",
                "id": "2"
            }

            .
            .
            .

            "55": {
                "type": "1",
                "id": "55"
            }
        }

好的，它很简单我得到了json字符串，在循环中我会做这样的事情

JSONObject typeCar = jsonObject.getJSONObject("TypeCar");
for(int j = 1; j < typeCar.length(); j++) {
 JSONObject numberTcar = typeCar.getJSONObject(String.valueOf(j));

 String type = numberTcar.getString("type");
 String id = numberTcar.getString("id");
}

但如果我有像这样的json

{
            "TypeCar": {
                "10": {
                    "type": "1",
                    "id": "10"
                },
                "4": {
                    "type": "1",
                    "id": "4"
                }

                 "14": {
                    "type": "1",
                    "id": "14"
                }
            }

然后我解析它？

UPD：

解析迭代器：

//my all json string
JSONObject jsonObject = new JSONObject(json.toString());
//json only TypeCar
JSONObject sensorTypes = jsonObject.getJSONObject("TypeCar");

Iterator<String> iterator = sensorTypes.keys();
while(iterator.hasNext()) {
    String currentKey = iterator.next();
    JSONObject obj = jsonObject.optJSONObject(currentKey);

    if(obj != null) {

       //its now work, what i do wrong?
       String type = obj.getString("type");
       String id = obj.getString("id");

}
}