[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());
      }
 }