我怎样才能解析没有任何阵列只是一个单一的对象 [英] How can i parse without any array just a single object

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问题描述

我在Android开发领域的新

如何分析眼前这个对象。

  {
    USER_ID:21,
    名字:,
    姓:,
    电子邮件:9654008793,
    isd_ code:91,
    手机:9654008793,
    性别:,
    DOB:0000-00-00,
    形象:空,
    状态:0
    verification_key:4518
}


解决方案

只要按照下面的教程,这将有助于你它帮助我...:)

http://www.androidhive.info/2012/01 / Android的JSON的解析教程/

在项目中创建一个类文件,并将它命名为JSONParser.java。解析器类有一个方法,这将使得HTTP请求来获取JSON数据并返回一个JSONObject。

 公共类JSONParser {静态InputStream为= NULL;
静态的JSONObject jObj = NULL;
静态JSON字符串=;//构造
公共JSONParser(){}公众的JSONObject getJSONFromUrl(字符串URL){    //使HTTP请求
    尝试{
        // defaultHttpClient
        DefaultHttpClient的HttpClient =新DefaultHttpClient();
        HttpPost httpPost =新HttpPost(URL);        HTT presponse HTT presponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = HTT presponse.getEntity();
        是= httpEntity.getContent();    }赶上(UnsupportedEncodingException五){
        e.printStackTrace();
    }赶上(ClientProtocolException E){
        e.printStackTrace();
    }赶上(IOException异常五){
        e.printStackTrace();
    }    尝试{
        读者的BufferedReader =新的BufferedReader(新的InputStreamReader(
                是,ISO-8859-1),8);
        StringBuilder的SB =新的StringBuilder();
        串线= NULL;
        而((行= reader.readLine())!= NULL){
            sb.append(行+\\ n);
        }
        is.close();
        JSON = sb.toString();
    }赶上(例外五){
        Log.e(缓冲区错误,错误转换结果+ e.toString());
    }    //尝试分析字符串到一个JSON对象
    尝试{
        jObj =新的JSONObject(JSON);
    }赶上(JSONException E){
        Log.e(JSON解析器,错误分析数据+ e.toString());
    }    //返回JSON字符串
    返回jObj;}
}

解析JSON数据并更新到ListView控件

 公共类AndroidJSONParsingActivity扩展ListActivity {// URL使请求
私有静态字符串URL =htt​​p://api.androidhive.info/contacts/;// JSON节点名称
私有静态最后弦乐TAG_CONTACTS =接触;
私有静态最后弦乐TAG_ID =ID;
私有静态最后弦乐TAG_NAME =名;
私有静态最后弦乐TAG_EMAIL =电子邮件;
私有静态最后弦乐TAG_ADDRESS =地址;
私有静态最后弦乐TAG_GENDER =性别;
私有静态最后弦乐TAG_PHONE =手机;
私有静态最后弦乐TAG_PHONE_MOBILE =移动;
私有静态最后弦乐TAG_PHONE_HOME =家;
私有静态最后弦乐TAG_PHONE_OFFICE =办公室;//接触JSONArray
JSONArray接触= NULL;@覆盖
公共无效的onCreate(捆绑savedInstanceState){
    super.onCreate(savedInstanceState);
    的setContentView(R.layout.main);    //为哈希映射的ListView
    ArrayList的<&HashMap的LT;字符串,字符串>> contactList =新的ArrayList<&HashMap的LT;字符串,字符串>>();    //创建JSON解析器实例
    JSONParser jParser =新JSONParser();    // URL从获取JSON字符串
    JSONObject的JSON = jParser.getJSONFromUrl(URL);    尝试{
        //获取联系人的数组
        接触= json.getJSONArray(TAG_CONTACTS);        //通过所有联系人循环
        的for(int i = 0; I< contacts.length();我++){
            JSONObject的C = contacts.getJSONObject(I)            //存储在变量中的每个JSON项目
            字符串ID = c.getString(TAG_ID);
            字符串名称= c.getString(TAG_NAME);
            字符串email = c.getString(TAG_EMAIL);
            字符串的地址= c.getString(TAG_ADDRESS);
            字符串性别= c.getString(TAG_GENDER);            //电话号码是阿恩JSON对象
            JSONObject的手机= c.getJSONObject(TAG_PHONE);
            字符串移动= phone.getString(TAG_PHONE_MOBILE);
            字符串家= phone.getString(TAG_PHONE_HOME);
            串办公室= phone.getString(TAG_PHONE_OFFICE);            //创建新的HashMap
            HashMap的<字符串,字符串>地图=新的HashMap<字符串,字符串>();            //将每个子节点的HashMap键=>值
            map.put(TAG_ID,身份证);
            map.put(TAG_NAME,名);
            map.put(TAG_EMAIL,电子邮件);
            map.put(TAG_PHONE_MOBILE,手机);            //添加HashList到ArrayList的
            contactList.add(地图);
        }
    }赶上(JSONException E){
        e.printStackTrace();
    }
    / **
     *更新解析JSON数据到ListView控件
     * * /
    ListAdapter适配器=新SimpleAdapter(这一点,contactList,
            R.layout.list_item,
            新的String [] {TAG_NAME,TAG_EMAIL,TAG_PHONE_MOBILE},新的INT [] {
                    R.id.name,R.id.email,R.id.mobile});    setListAdapter(适配器);    //选择单个ListView项
    ListView控件LV = getListView();    //在选择单列表项启动新画面
    lv.setOnItemClickListener(新OnItemClickListener(){        @覆盖
        公共无效onItemClick(适配器视图<>母公司,观景,
                INT位置,长的id){
            //从选定的ListItem得到的值
            字符串名称=((的TextView)view.findViewById(R.id.name))的getText()的toString()。
            串成本=((的TextView)view.findViewById(R.id.email))的getText()的toString()。
            字符串描述=((的TextView)view.findViewById(R.id.mobile))的getText()的toString()。            //开始新意图
            在意向=新意图(getApplicationContext(),SingleMenuItemActivity.class);
            in.putExtra(TAG_NAME,名);
            in.putExtra(TAG_EMAIL,成本);
            in.putExtra(TAG_PHONE_MOBILE,说明);
            startActivity(在);
        }
    });
}}

I am new in the field of android development.

How to parse just this object.

{
    "user_id":21,
    "firstname":"",
    "lastname":"",
    "email":"9654008793",
    "isd_code":"91",
    "mobile":"9654008793",
    "gender":"",
    "dob":"0000-00-00",
    "image":null,
    "status":"0",
    "verification_key":"4518"
}

解决方案

Just follow following tutorial this will help you it helped me...:)

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

In your project create a class file and name it as JSONParser.java. The parser class has a method which will make http request to get JSON data and returns a JSONObject.

public class JSONParser {

static InputStream is = null;
static JSONObject jObj = null;
static String json = "";

// constructor
public JSONParser() {

}

public JSONObject getJSONFromUrl(String url) {

    // Making HTTP request
    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);

        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();          

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }

    // return JSON String
    return jObj;

}
}

Parsing JSON data and updating into ListView

public class AndroidJSONParsingActivity extends ListActivity {

// url to make request
private static String url = "http://api.androidhive.info/contacts/";

// JSON Node names
private static final String TAG_CONTACTS = "contacts";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";
private static final String TAG_ADDRESS = "address";
private static final String TAG_GENDER = "gender";
private static final String TAG_PHONE = "phone";
private static final String TAG_PHONE_MOBILE = "mobile";
private static final String TAG_PHONE_HOME = "home";
private static final String TAG_PHONE_OFFICE = "office";

// contacts JSONArray
JSONArray contacts = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // Hashmap for ListView
    ArrayList<HashMap<String, String>> contactList = new ArrayList<HashMap<String, String>>();

    // Creating JSON Parser instance
    JSONParser jParser = new JSONParser();

    // getting JSON string from URL
    JSONObject json = jParser.getJSONFromUrl(url);

    try {
        // Getting Array of Contacts
        contacts = json.getJSONArray(TAG_CONTACTS);

        // looping through All Contacts
        for(int i = 0; i < contacts.length(); i++){
            JSONObject c = contacts.getJSONObject(i);

            // Storing each json item in variable
            String id = c.getString(TAG_ID);
            String name = c.getString(TAG_NAME);
            String email = c.getString(TAG_EMAIL);
            String address = c.getString(TAG_ADDRESS);
            String gender = c.getString(TAG_GENDER);

            // Phone number is agin JSON Object
            JSONObject phone = c.getJSONObject(TAG_PHONE);
            String mobile = phone.getString(TAG_PHONE_MOBILE);
            String home = phone.getString(TAG_PHONE_HOME);
            String office = phone.getString(TAG_PHONE_OFFICE);

            // creating new HashMap
            HashMap<String, String> map = new HashMap<String, String>();

            // adding each child node to HashMap key => value
            map.put(TAG_ID, id);
            map.put(TAG_NAME, name);
            map.put(TAG_EMAIL, email);
            map.put(TAG_PHONE_MOBILE, mobile);

            // adding HashList to ArrayList
            contactList.add(map);
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }


    /**
     * Updating parsed JSON data into ListView
     * */
    ListAdapter adapter = new SimpleAdapter(this, contactList,
            R.layout.list_item,
            new String[] { TAG_NAME, TAG_EMAIL, TAG_PHONE_MOBILE }, new int[] {
                    R.id.name, R.id.email, R.id.mobile });

    setListAdapter(adapter);

    // selecting single ListView item
    ListView lv = getListView();

    // Launching new screen on Selecting Single ListItem
    lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            // getting values from selected ListItem
            String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
            String cost = ((TextView) view.findViewById(R.id.email)).getText().toString();
            String description = ((TextView) view.findViewById(R.id.mobile)).getText().toString();

            // Starting new intent
            Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
            in.putExtra(TAG_NAME, name);
            in.putExtra(TAG_EMAIL, cost);
            in.putExtra(TAG_PHONE_MOBILE, description);
            startActivity(in);
        }
    });
}

}

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