Question

你好，我是Android新手，整个上午都在寻找解决方案。我只找到了无法帮助我的帖子。有趣的帖子from JSON to 2D array在我的项目中没有用。我试着用不同的方法将这个方法实现到我的代码中。我只想将我的JSON响应转换为2D字符串数组，如下所示：

数组[0] [0] = Artikelnummer;

数组[0] [1] = Preis;

数组[0] [2] =冯;

数组[0] [3] = Bis;

数组[0] [4] = art_link;

数组[1] [0] = Artikelnummer;

数组[1] [1] = Preis;

数组[1] [2] = Von;

数组[1] [3] = Bis;

数组[0] [4] = art_link;

.....

...

JSON响应如下：

[{
"Artikelnummer": 01578675,
"Preis": 3.27,
"Von": "2017-10-16 08:00:00",
"Bis": "2017-10-20 13:00:00",
"art_link": "http://link/.jpg"
},
{
"Artikelnummer": 99999999,
"Preis": 9.99,
"Von": "2017-10-16 08:00:00",
"Bis": "2017-10-20 13:00:00",
"art_link": "http://link/.jpg"
},
{
"Artikelnummer": 55555555,
"Preis": 5.55,
"Von": "2017-10-16 08:00:00",
"Bis": "2017-10-20 13:00:00",
"art_link": "http://link/.jpg"
 },
{
"Artikelnummer": 88888888,
"Preis": 8.88,
"Von": "2017-10-16 08:00:00",
"Bis": "2017-10-20 13:00:00",
"art_link": "http://link/.jpg"
}]

我以这种方式得到了回复：

         URL url = new URL("https://myjson.com");
         HttpURLConnection httpURLConnection = (HttpURLConnection) 
         url.openConnection();

         InputStream inputStream = httpURLConnection.getInputStream();

         BufferedReader bufferedReader = new BufferedReader(new 
         InputStreamReader(inputStream));
         String line = "";

         while(line != null){
              line = bufferedReader.readLine();
              data = data + line;

         ArrayList<String> listdata = new ArrayList<>();
         JSONArray jArray = new JSONArray(data);

         for(int i =0 ;i <jArray.length(); i++){
             listdata.add(jArray.getString(i));
             JSONObject jObject = (JSONObject) jArray.get(i);
        }

但是如何将我的jArray响应转换为String [] []

这样的事情，但这对我的项目不起作用

String[][] matrix = new String[jArray.length][5];

Answer 1

将您的JSON字符串解析为JSONArray，然后对其进行迭代并在2D字符串数组中填充给定行。

JSONArray json = new JSONArray(data);
String[][] array = new String[json.length()][5];

for (int i=0; i < json.length(); i++) {                           
    JSONObject obj = json.getJSONObject(i);
    array[i][0] = String.valueOf(obj.getInt("Artikelnummer"));
    array[i][1] = String.valueOf(obj.getDouble("Preis"));
    array[i][2] = obj.getString("Von");
    array[i][3] = obj.getString("Bis");
    array[i][4] = obj.getString("art_link");
}

将JSON响应转换为2D字符串数组

1 个答案: