Question

您好我是Android开发的新手，我想从json数组中提取值，请您指导。

这是我的json

[
    {
        "Id": "c0f3310b-5ec2-4af0",
        "UserId": "fd83ca17-41f5-472a",
        "ProfileId": "100006690",
        "ProfileType": "facebook",
        "ProfileDate": "/Date(1380894956000)/",
        "ProfileStatus": 1
    },
    {
        "Id": "6954433d-b78e-47b6",
        "UserId": "fd83ca17-41f5-8efe",
        "ProfileId": "100004492",
        "ProfileDate": "/Date(1380894685000)/",
        "ProfileStatus": 1,
        "ProfileType": "facebook"
    }
]

谢谢

Answer 1

如下面的编码

JSONArray jObject = new JSONArray(jsoninputstring);
        for (int i = 0; i < jObject.length(); i++) {
             JSONObject obj = jObject.getJSONObject(i);

             String name= obj.getString("Id");
             String email= obj.getString("UserId");
             String image= obj.getString("ProfileId");
        }

以下是JSON解析的教程

http://lakyrana.blogspot.in/

http://www.androidhive.info/2012/01/android-json-parsing-tutorial/

http://androidexample.com/JSON_Parsing_-_Android_Example/index.php?view=article_discription&aid=71&aaid=95

Answer 2

创建新的JSONArray对象并迭代它。

JSONArray arr = new JSONArray(jsonString);
for(int i=0;i<arr.length;i++){
   JSONObject obj = arr.getJSONObject(i);
   // read data from obj using obj.getString method.
}

Answer 3

   JSONArray categories = responseData.getJSONArray("categories"); // your JSON array
   for(int i=0; i < categories.length(); i++){
        JSONObject ob = (JSONObject) categories.get(i);
        ob.getString("Id");
        ob.getString("UserId"); // and so on
}

Answer 4

我强烈建议您查看JacksonParser ...您可以从this link下载jar文件，您可以轻松找到如何使用它的示例。这是将json解析为对象的最简单，最快捷的方法。

Answer 5

JSONArray jsonArray = new JSONArray(yourResponseString);
for(int i=0;i<jsonArray.length();i++){

         JSONObject dataObject=dataArray.getJSONObject(i);

            String ID=dataObject.getString("Id");
            String UserID=dataObject.getString("UserId");
            String ProfileID = jsonObject.getString("ProfileId");
               ..
}

如何从json数组中提取值

5 个答案: