[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：

 1 /**  
 2   * Google定位的实现.<br/>  
 3   * Geolocation的详细信息请参见：<br/>  
 4   * <a  
 5   * href="http://code.google.com/apis/gears/geolocation_network_protocol.html" mce_href="http://code.google.com/apis/gears/geolocation_network_protocol.html">  
 6   * http://code.google.com/apis/gears/geolocation_network_protocol.html</a>  
 7   */    
 8 public class LocationAct extends Activity {    
 9      private TextView txtInfo;    
10      public void onCreate(Bundle savedInstanceState) {    
11          super.onCreate(savedInstanceState);    
12          setContentView(R.layout.main);    
13          Button btn = (Button) findViewById(R.id.btnStart);    
14          txtInfo = (TextView) findViewById(R.id.txtInfo);    
15          btn.setOnClickListener(new Button.OnClickListener() {    
16              public void onClick(View view) {    
17                  getLocation();    
18              }    
19          });    
20      }    
21      private void getLocation() {    
22          TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);    
23          GsmCellLocation gsmCell = (GsmCellLocation) tm.getCellLocation();    
24          int cid = gsmCell.getCid();    
25          int lac = gsmCell.getLac();    
26          String netOperator = tm.getNetworkOperator();    
27          int mcc = Integer.valueOf(netOperator.substring(0, 3));    
28          int mnc = Integer.valueOf(netOperator.substring(3, 5));    
29          JSONObject holder = new JSONObject();    
30          JSONArray array = new JSONArray();    
31          JSONObject data = new JSONObject();    
32          try {    
33              holder.put("version", "1.1.0");    
34              holder.put("host", "maps.google.com");    
35              holder.put("address_language", "zh_CN");    
36              holder.put("request_address", true);    
37              holder.put("radio_type", "gsm");    
38              holder.put("carrier", "HTC");    
39              data.put("cell_id", cid);    
40              data.put("location_area_code", lac);    
41              data.put("mobile_countyr_code", mcc);    
42              data.put("mobile_network_code", mnc);    
43              array.put(data);    
44              holder.put("cell_towers", array);    
45          } catch (JSONException e) {    
46              e.printStackTrace();    
47          }    
48          DefaultHttpClient client = new DefaultHttpClient();    
49          HttpPost httpPost = new HttpPost("http://www.google.com/loc/json");    
50          StringEntity stringEntity = null;    
51          try {    
52              stringEntity = new StringEntity(holder.toString());    
53          } catch (UnsupportedEncodingException e) {    
54              e.printStackTrace();    
55          }    
56          httpPost.setEntity(stringEntity);    
57          HttpResponse httpResponse = null;    
58          try {    
59              httpResponse = client.execute(httpPost);    
60          } catch (ClientProtocolException e) {    
61              e.printStackTrace();    
62          } catch (IOException e) {    
63              e.printStackTrace();    
64          }    
65          HttpEntity httpEntity = httpResponse.getEntity();    
66          InputStream is = null;    
67          try {    
68              is = httpEntity.getContent();    
69          } catch (IllegalStateException e) {    
70              e.printStackTrace();    
71          } catch (IOException e) {    
72              // TODO Auto-generated catch block    
73              e.printStackTrace();    
74          }    
75          InputStreamReader isr = new InputStreamReader(is);    
76          BufferedReader reader = new BufferedReader(isr);    
77          StringBuffer stringBuffer = new StringBuffer();    
78          try {    
79              String result = "";    
80              while ((result = reader.readLine()) != null) {    
81                  stringBuffer.append(result);    
82              }    
83          } catch (IOException e) {    
84              e.printStackTrace();    
85          }    
86          txtInfo.setText(stringBuffer.toString());    
87      }    
88 }