解析JSON到的ListView [英] PARSing JSON to ListView

问题描述

好吧，我已经通过吨的例子在分析我的JSON的结果，没有运气去了。我有以下的JSON例子，我不想状态信息或地理位置现在。我只是想用站对象并选择从阵列有些东西在我的ListView作为一个列表中显示。我不明白，任何在那里的文档。

会有人能够提供关于如何读取JSON并把它到ListView一个简单的例子。这将是非常有益的。我真的没有任何code组成，因为它没有一个真正为我工作。

  {
状态： {
    错误：否，
    code：200，
    说明：无，
    消息：请求确认
}，
地理位置：{
    city_id：147，
    city_long：圣洛朗，
    region_short：QC
    region_long：魁北克，
    country_long：加拿大
    COUNTRY_ID：43，
    REGION_ID：35
}，
站：
    {
        国：加拿大
        reg_price：N \ / A，
        mid_price：N \ / A，
        pre_price：N \ / A，
        diesel_price：N \ / A，
        地址：3885，大道德拉ç\ u00f4te-的Vertu，
        柴油：0，
        ID：33862，
        纬度：45.492367
        液化天然气：-73.710915
        站：壳牌，
        标识：HTTP：\ / \ / www.mygasfeed.com \ / IMG \ /站标识\ /logo-shell.png
        区域：魁，
        城市：圣洛朗，
        reg_date：N \ / A，
        mid_date：N \ / A，
        pre_date：N \ / A，
        diesel_date：N \ / A，
        距离：1.9公里
    }
]
 

解决方案

下面是你将如何解析数组和列表视图中显示它的一个例子。我并没有包括XML，但它是pretty的简单描述包含的国家和地址（或其他）txt的字段列表视图和多行的结果：

 的String []从=新的String [] {row_1，row_2};
 INT []到=新INT [] {R.id.country，R.id.address};
 名单＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT; fillMaps =新的ArrayList＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT;（）;

尝试 {
     JSONObject的OBJ =新的JSONObject（jsonString）;
     JSONArray站= obj.getJSONArray（站）;
     Log.i（TAG条目数+ stations.length（））;
     对于（INT J = 0; J＆LT; stations.length（）; J ++）{
             的JSONObject的JSONObject = stations.getJSONObject（J）;
             HashMap的＆LT;字符串，字符串＆GT;图=新的HashMap＆LT;字符串，字符串＆GT;（）;
             map.put（row_1，jsonObject.getString（国家））;
             map.put（row_2，jsonObject.getString（地址））;

             fillMaps.add（图）
     }
 }赶上（例外五）{
        e.printStackTrace（）;
 }

 SimpleAdapter适配器=新SimpleAdapter（背景下，fillMaps，R.layout.result，从，到）;
 mListView.setAdapter（适配器）;
 

Okay I have went through tons of examples on PARSing my JSON results, with no luck. I have the below JSON example I don't want status info or geoLocation right now. I just want to use stations object and pick some things from the array to display in my ListView as a list. I don't understand any of the documentation out there.

Would someone be able to provide a simple example on how read the JSON and put it to a ListView. This would be very helpful. I don't really have any code made up since none of it really worked for me.

{
"status": {
    "error": "NO",
    "code": 200,
    "description": "none",
    "message": "Request ok"
},
"geoLocation": {
    "city_id": "147",
    "city_long": "Saint-Laurent",
    "region_short": "QC",
    "region_long": "Quebec",
    "country_long": "Canada",
    "country_id": "43",
    "region_id": "35"
},
"stations": [
    {
        "country": "Canada",
        "reg_price": "N\/A",
        "mid_price": "N\/A",
        "pre_price": "N\/A",
        "diesel_price": "N\/A",
        "address": "3885, Boulevard de la C\u00f4te-Vertu",
        "diesel": "0",
        "id": "33862",
        "lat": "45.492367",
        "lng": "-73.710915",
        "station": "Shell",
        "logo": "http:\/\/www.mygasfeed.com\/img\/station-logo\/logo-shell.png",
        "region": "Quebec",
        "city": "Saint-Laurent",
        "reg_date": "N\/A",
        "mid_date": "N\/A",
        "pre_date": "N\/A",
        "diesel_date": "N\/A",
        "distance": "1.9km"
    }
]

解决方案

Here's an example of how you would parse the array and display it in the listview. I didn't include the xml but it is pretty simple to describe the listview and multi-line result containing the txt fields for country and address (or whatever):

 String[] from = new String[] {"row_1", "row_2"};
 int[] to = new int[] { R.id.country, R.id.address};
 List<HashMap<String, String>> fillMaps = new ArrayList<HashMap<String, String>>();

try {
     JSONObject obj = new JSONObject(jsonString);
     JSONArray stations = obj.getJSONArray("stations");
     Log.i(TAG,"Number of entries " + stations.length());
     for (int j = 0; j < stations.length(); j++) {
             JSONObject jsonObject = stations.getJSONObject(j);
             HashMap<String, String> map = new HashMap<String, String>();
             map.put("row_1", jsonObject.getString("country"));
             map.put("row_2", jsonObject.getString("address"));

             fillMaps.add(map);
     }
 } catch (Exception e) {
        e.printStackTrace();
 }

 SimpleAdapter adapter = new SimpleAdapter(context, fillMaps, R.layout.result, from, to);
 mListView.setAdapter(adapter);

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