[入门阅读]怎样在android中解析JSON

JSON入门介绍：http://kirin./blog/616226

也参考了此篇：http://blog.163.com/fushaolin@126/blog/static/16341724220108244251686/

json数据格式解析我自己分为两种：一种是普通的，一种是带有数组形式的：http://archive.cnblogs.com/a/1925327/

 

 

 

 

先实例化个JSONObject对象

JSONObject aJosnObj = new JSONObject(jsonStr);//jsonStr为对应json字符串数据

然后再根据json数据的实际情况调用有关方法。

 

这是一个利用JSON定位的例子：

/**
  * Google定位的实现.<br/>
  * Geolocation的详细信息请参见：<br/>
  * <a
  * href="http://code.google.com/apis/gears/geolocation_network_protocol.html" mce_href="http://code.google.com/apis/gears/geolocation_network_protocol.html">
  * http://code.google.com/apis/gears/geolocation_network_protocol.html</a>
  */
public class LocationAct extends Activity {
     private TextView txtInfo;
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         Button btn = (Button) findViewById(R.id.btnStart);
         txtInfo = (TextView) findViewById(R.id.txtInfo);
         btn.setOnClickListener(new Button.OnClickListener() {
             public void onClick(View view) {
                 getLocation();
             }
         });
     }
     private void getLocation() {
         TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
         GsmCellLocation gsmCell = (GsmCellLocation) tm.getCellLocation();
         int cid = gsmCell.getCid();
         int lac = gsmCell.getLac();
         String netOperator = tm.getNetworkOperator();
         int mcc = Integer.valueOf(netOperator.substring(0, 3));
         int mnc = Integer.valueOf(netOperator.substring(3, 5));
         JSONObject holder = new JSONObject();
         JSONArray array = new JSONArray();
         JSONObject data = new JSONObject();
         try {
             holder.put("version", "1.1.0");
             holder.put("host", "maps.google.com");
             holder.put("address_language", "zh_CN");
             holder.put("request_address", true);
             holder.put("radio_type", "gsm");
             holder.put("carrier", "HTC");
             data.put("cell_id", cid);
             data.put("location_area_code", lac);
             data.put("mobile_countyr_code", mcc);
             data.put("mobile_network_code", mnc);
             array.put(data);
             holder.put("cell_towers", array);
         } catch (JSONException e) {
             e.printStackTrace();
         }
         DefaultHttpClient client = new DefaultHttpClient();
         HttpPost httpPost = new HttpPost("http://www.google.com/loc/json");
         StringEntity stringEntity = null;
         try {
             stringEntity = new StringEntity(holder.toString());
         } catch (UnsupportedEncodingException e) {
             e.printStackTrace();
         }
         httpPost.setEntity(stringEntity);
         HttpResponse httpResponse = null;
         try {
             httpResponse = client.execute(httpPost);
         } catch (ClientProtocolException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         HttpEntity httpEntity = httpResponse.getEntity();
         InputStream is = null;
         try {
             is = httpEntity.getContent();
         } catch (IllegalStateException e) {
             e.printStackTrace();
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
         InputStreamReader isr = new InputStreamReader(is);
         BufferedReader reader = new BufferedReader(isr);
         StringBuffer stringBuffer = new StringBuffer();
         try {
             String result = "";
             while ((result = reader.readLine()) != null) {
                 stringBuffer.append(result);
             }
         } catch (IOException e) {
             e.printStackTrace();
         }
         txtInfo.setText(stringBuffer.toString());
     }
}