[入门阅读]怎样在android中解析JSON

JSON入门介绍：http://kirin.javaeye.com/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

[java] view plaincopyprint?

    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());    
     }    
}