我尝试使用下面的代码对jsonarray进行排序。但它没有正确排序jsonarray。一些价值观错位。
我的Jsonarray
{
"sTATUS": "SUCCESS",
"mSG": "Product List",
"product_list": [
{
"product_id": "5",
"product_name": "LAS VEGAS 530",
"product_model": "530",
"product_image": "uploads/main/14748883885prime.png",
"price": "18990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "68",
"product_name": "TESTAPESKER MODSPK1",
"product_model": "modspk1",
"product_image": "",
"price": "2100",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "1",
"product_name": "CAPE TOWN 940",
"product_model": "940",
"product_image": "uploads/main/14748836241prime.png",
"price": "49990",
"discount_price": "990",
"discount_percentage": "1.98%",
"offer_price": "49000",
"featured_product": "1",
"category_id": "1",
"category_name": "Speakers",
"rate": "3",
"review": "2",
"gift_id": "0"
},
{
"product_id": "10",
"product_name": "BARCELONA 230 BT",
"product_model": "230 BT",
"product_image": "uploads/main/147531739810prime.png",
"price": "10990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "1",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "3",
"product_name": "SANTA FE 530",
"product_model": "530",
"product_image": "uploads/main/14748874843prime.png",
"price": "34990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "1",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "8",
"product_name": "NEW ORLEANS 220",
"product_model": "220",
"product_image": "uploads/main/14753168598prime.png",
"price": "8990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "6",
"product_name": "SAN MARINO 330",
"product_model": "330",
"product_image": "uploads/main/14748893666prime.png",
"price": "14990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "7",
"product_name": "NEW JERSEY 220BT",
"product_model": "220BT",
"product_image": "uploads/main/14753166327prime.png",
"price": "10990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "13",
"product_name": "TOKYO 110",
"product_model": "110",
"product_image": "uploads/main/147549157513prime.png",
"price": "4990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "2"
},
{
"product_id": "2",
"product_name": "SAN ANTONIO 640",
"product_model": "640",
"product_image": "uploads/main/14748866592prime.png",
"price": "33500",
"discount_price": "500",
"discount_percentage": "1.49%",
"offer_price": "33000",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "1"
},
{
"product_id": "60",
"product_name": "PHILADELPHIA 845",
"product_model": "845",
"product_image": "uploads/main/148109520160prime.png",
"price": "54990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "1",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "12",
"product_name": "MANCHESTER 110",
"product_model": "110",
"product_image": "uploads/main/147549119212prime.png",
"price": "5990",
"discount_price": "100",
"discount_percentage": "1.67%",
"offer_price": "5890",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "11",
"product_name": "MONTEVIDEO 4010 DVD",
"product_model": "4010 DVD",
"product_image": "uploads/main/147549071111prime.png",
"price": "9990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "0",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "0"
},
{
"product_id": "4",
"product_name": "SAN DIEGO 530",
"product_model": "530",
"product_image": "uploads/main/14748877994prime.png",
"price": "31990",
"discount_price": "",
"discount_percentage": "",
"offer_price": "",
"featured_product": "1",
"category_id": "1",
"category_name": "Speakers",
"rate": "0",
"review": "0",
"gift_id": "2"
}
],
"cart_count": "0"
}
码
try {
JSONObject json=new JSONObject(cal_json);
JSONArray users = json.getJSONArray("product_list");
List<JSONObject> list = new ArrayList<JSONObject>();
for (int i = 0; i < users.length(); i++) {
list.add(users.getJSONObject(i));
}
Collections.sort( list, new Comparator<JSONObject>() {
public int compare(JSONObject a, JSONObject b) {
Long valA = null;
Long valB=null;
try {
valA = (Long) a.get("price");
valB = (Long) b.get("price");
}
catch (JSONException e) {
//do something
}
return valA.compareTo(valB);
}
});
// Collections.sort(list, new SortBasedOnMessageId());
JSONArray resultArray = new JSONArray();
for (int i = 0; i < users.length(); i++) {
resultArray.put(list.get(i));
}
Log.d("newjsonarr",resultArray.toString());
getjson(resultArray.toString());
} catch (JSONException e) {
e.printStackTrace();
}
有没有人知道基于字符串或数值按升序和降序排序jsonarray的确切方法。对于任何积极的回应，请提前感谢。
答案 0 :(得分：0)
你的比较课应该是这样的。
public int compare(JSONObject a, JSONObject b) { Long valA = null; Long valB=null; try { valA = Long.parseLong(a.get("price")); valB = Long.parseLong(b.get("price")); } catch (JSONException e) { //do something } return valA.compareTo(valB); } });