android中解析后台返回的json字符串

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普通形式的：
服务器端返回的json数据格式如下：

{"userbean":{"Uid":"100196","Showname":"\u75af\u72c2\u7684\u7334\u5b50","Avtar":null,"State":1}}

分析代码如下：

01// TODO 状态处理 500 200 
02int res = ; 
03res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
04if (res == 200) { 
05    /**
06     * 当返回码为200时，做处理
07     * 得到服务器端返回json数据，并做处理
08     * */
09    HttpResponse httpResponse = httpClient.execute(httpPost);
10    StringBuilder builder =newStringBuilder(); 
11    BufferedReader bufferedReader2 =newBufferedReader( 
12        newInputStreamReader(httpResponse.getEntity().getContent()));
13    String str2 ="";
14    for(String s = bufferedReader2.readLine(); s !=null; s = bufferedReader2
15        .readLine()) {
16    builder.append(s);
17    } 
18    Log.i("cat",">>>>>>"+ builder.toString());
19 
20JSONObject jsonObject = newJSONObject(builder.toString())
21    .getJSONObject("userbean");
22 
23String Uid; 
24String Showname; 
25String Avtar; 
26String State; 
27 
28Uid = jsonObject.getString("Uid");
29Showname = jsonObject.getString("Showname");
30Avtar = jsonObject.getString("Avtar");
31State = jsonObject.getString("State");
32带数组形式的：
33服务器端返回的数据格式为：
34 
35{"calendar":
36{"calendarlist":
37[ 
38{"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allDay":false},
39{"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allDay":false}
40] 
41} 
42}
43 
44分析代码如下：
45 
46// TODO 状态处理 500 200 
47int res = ; 
48res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
49if (res == 200) { 
50    /**
51     * 当返回码为200时，做处理
52     * 得到服务器端返回json数据，并做处理
53     * */
54    HttpResponse httpResponse = httpClient.execute(httpPost);
55    StringBuilder builder =newStringBuilder(); 
56    BufferedReader bufferedReader2 =newBufferedReader( 
57        newInputStreamReader(httpResponse.getEntity().getContent()));
58    String str2 ="";
59    for(String s = bufferedReader2.readLine(); s !=null; s = bufferedReader2
60        .readLine()) {
61    builder.append(s);
62    } 
63    Log.i("cat",">>>>>>"+ builder.toString());
64    /**
65     * 这里需要分析服务器回传的json格式数据，
66     */
67    JSONObject jsonObject =newJSONObject(builder.toString())
68        .getJSONObject("calendar");
69    JSONArray jsonArray = jsonObject.getJSONArray("calendarlist");
70    for(inti=;i<jsonArray.length();i++){
71    JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i);
72    CalendarInfo calendarInfo =newCalendarInfo(); 
73    calendarInfo.setCalendar_id(jsonObject2.getString("calendar_id"));
74    calendarInfo.setTitle(jsonObject2.getString("title"));
75    calendarInfo.setCategory_name(jsonObject2.getString("category_name"));
76    calendarInfo.setShowtime(jsonObject2.getString("showtime"));
77    calendarInfo.setEndtime(jsonObject2.getString("endshowtime"));
78    calendarInfo.setAllDay(jsonObject2.getBoolean("allDay"));
79    calendarInfos.add(calendarInfo);
80    }

总结，普通形式的只需用JSONObject ，带数组形式的需要使用JSONArray 将其变成一个list。