JSON常用与服务器进行数据交互，JSON中“{}”表示JSONObject，“[]”表示JSONArray
如下json数据：
1 {"singers":[ 2 {"id":"02","name":"tom","gender":"男","tel":["123456","789012"]}, 3 {"id":"03","name":"jerry","gender":"男","tel":["899999","666666"]}, 4 {"id":"04","name":"jim","gender":"男","tel":["7777","5555"]},{"id":"05","name":"lily","gender":"女","tel":["222222","111111"]} 5 ]}
生成json数据代码：
1 public String buildJson() throws JSONException { 2 3 JSONObject persons = new JSONObject(); 4 5 JSONArray personArr = new JSONArray(); 6 7 JSONObject person = new JSONObject(); 8 person.put("id", "02"); 9 person.put("name", "tom"); 10 person.put("gender", "男"); 11 12 JSONArray tel = new JSONArray(); 13 tel.put("123456"); 14 tel.put("789012"); 15 16 person.put("tel", tel); 17 18 personArr.put(person); 19 20 JSONObject person2 = new JSONObject(); 21 person2.put("id", "03"); 22 person2.put("name", "jerry"); 23 person2.put("gender", "男"); 24 25 JSONArray tel2 = new JSONArray(); 26 tel2.put("899999"); 27 tel2.put("666666"); 28 29 person2.put("tel", tel2); 30 31 personArr.put(person2); 32 33 34 JSONObject person3 = new JSONObject(); 35 person3.put("id", "04"); 36 person3.put("name", "jim"); 37 person3.put("gender", "男"); 38 39 JSONArray tel3 = new JSONArray(); 40 tel3.put("7777"); 41 tel3.put("5555"); 42 43 person3.put("tel", tel3); 44 45 personArr.put(person3); 46 47 48 JSONObject person4 = new JSONObject(); 49 person4.put("id", "05"); 50 person4.put("name", "lily"); 51 person4.put("gender", "女"); 52 53 JSONArray tel4 = new JSONArray(); 54 tel4.put("222222"); 55 tel4.put("111111"); 56 57 person4.put("tel", tel4); 58 59 personArr.put(person4); 60 61 62 persons.put("singers", personArr); 63 64 65 return persons.toString(); 66 }
解析json数据代码：
1 private void parseJsonMulti(String strResult) { 2 try { 3 JSONArray jsonObjs = new JSONObject(strResult).getJSONArray("singers"); 4 String s = ""; 5 6 for (int i = 0; i < jsonObjs.length(); i++) { 7 JSONObject jsonObj = ((JSONObject) jsonObjs.opt(i)); 8 int id = jsonObj.getInt("id"); 9 String name = jsonObj.getString("name"); 10 String gender = jsonObj.getString("gender"); 11 s += "ID号" + id + ", 姓名：" + name + ",性别：" + gender + "，电话："; 12 JSONArray tel = jsonObj.getJSONArray("tel"); 13 for (int j = 0; j < tel.length(); j++) { 14 15 s += tel.getString(j)+"/"; 16 } 17 18 s += " "; 19 20 } 21 tv.setText(s); 22 } catch (JSONException e) { 23 e.printStackTrace(); 24 } 25 }