怎么获取type为2的后面的所有电力公司name和code

Question

[{"code":"D1_3600","name":"电费缴纳","type":"2","categories":[{"code":"D1_3600_8401","name":"合肥供电公司"},{"code":"D1_3600_0101","name":"肥东供电公司"},{"code":"D1_3600_0102","name":"肥西供电公司"},{"code":"D1_3600_0103","name":"长丰供电公司"},{"code":"D1_3600_8101","name":"安徽电力省公司"}]},{"code":"D3_3600","name":"燃气费缴纳","type":"3","categories":[{"code":"D3_3600_00AH","name":"合肥燃气"}]},{"code":"I1_3600","name":"联通缴费","type":"5","categories":[{"code":"I1_3600_1305","name":"安徽联通"}]},{"code":"J0_3600","name":"彩票投注","type":"34","categories":[{"code":"J0_3600_00AH","name":"安徽福彩"},{"code":"J0_3600_00ZS","name":"招商福彩"},{"code":"J0_3600_00NH","name":"农行福彩"}]},{"code":"D4_3600","name":"水费缴纳","type":"1","categories":[{"code":"D4_3600_00HF","name":"合肥供水"}]},{"code":"I1_3600","name":"移动缴费","type":"4","categories":[{"code":"I1_3600_000A","name":"安徽移动"}]},{"code":"G1_3600","name":"交通罚款","type":"26","categories":[{"code":"G1_3600_3602","name":"交警罚款缴费（安徽非税）"},{"code":"G1_3600_0000","name":"违章代办（第三方处理）"}]},{"code":"I1_3600","name":"有线电视缴费","type":"19","categories":[{"code":"I1_3600_3610","name":"合肥市有线电视"},{"code":"I1_3600_200A","name":"合肥市有线电视"}]},{"code":"S2_3600","name":"医疗充值","type":"47","categories":[{"code":"S2_3600_0000","name":"医疗-健康之路"}]},{"code":"I1_3600","name":"电信手机缴费","type":"15","categories":[{"code":"I1_3600_4550","name":"安徽电信手机缴费（滁州）"},{"code":"I1_3600_4551","name":"安徽电信手机缴费（合肥）"},{"code":"I1_3600_4552","name":"安徽电信手机缴费（蚌埠）"},{"code":"I1_3600_4553","name":"安徽电信手机缴费（芜湖）"},{"code":"I1_3600_4554","name":"安徽电信手机缴费（淮南）"},{"code":"I1_3600_4555","name":"安徽电信手机缴费（马鞍山）"},{"code":"I1_3600_4556","name":"安徽电信手机缴费（安庆）"},{"code":"I1_3600_4557","name":"安徽电信手机缴费（宿州）"},{"code":"I1_3600_4558","name":"安徽电信手机缴费（阜阳）"},{"code":"I1_3600_4559","name":"安徽电信手机缴费（黄山）"},{"code":"I1_3600_4560","name":"安徽电信手机缴费（亳州）"},{"code":"I1_3600_4561","name":"安徽电信手机缴费（淮北）"},{"code":"I1_3600_4562","name":"安徽电信手机缴费（铜陵）"},{"code":"I1_3600_4563","name":"安徽电信手机缴费（宣城）"},{"code":"I1_3600_4564","name":"安徽电信手机缴费（六安）"},{"code":"I1_3600_4566","name":"安徽电信手机缴费（池州）"}]},{"code":"I1_3600","name":"电信固话宽带缴费","type":"44","categories":[{"code":"I1_3600_2550","name":"安徽电信固话缴费（滁州）"},{"code":"I1_3600_2551","name":"安徽电信固话缴费（合肥）"},{"code":"I1_3600_2552","name":"安徽电信固话缴费（蚌埠）"},{"code":"I1_3600_2553","name":"安徽电信固话缴费（芜湖）"},{"code":"I1_3600_2554","name":"安徽电信固话缴费（淮南）"},{"code":"I1_3600_2555","name":"安徽电信固话缴费（马鞍山）"},{"code":"I1_3600_2556","name":"安徽电信固话缴费（安庆）"},{"code":"I1_3600_2557","name":"安徽电信固话缴费（宿州）"},{"code":"I1_3600_2558","name":"安徽电信固话缴费（阜阳）"},{"code":"I1_3600_2559","name":"安徽电信固话缴费（黄山）"},{"code":"I1_3600_2560","name":"安徽电信固话缴费（亳州）"},{"code":"I1_3600_2561","name":"安徽电信固话缴费（淮北）"},{"code":"I1_3600_2562","name":"安徽电信固话缴费（铜陵）"},{"code":"I1_3600_2563","name":"安徽电信固话缴费（宣城）"},{"code":"I1_3600_2564","name":"安徽电信固话缴费（六安）"},{"code":"I1_3600_2566","name":"安徽电信固话缴费（池州）"},{"code":"I1_3600_5550","name":"安徽电信宽带缴费（滁州）"},{"code":"I1_3600_5551","name":"安徽电信宽带缴费（合肥）"},{"code":"I1_3600_5552","name":"安徽电信宽带缴费（蚌埠）"},{"code":"I1_3600_5553","name":"安徽电信宽带缴费（芜湖）"},{"code":"I1_3600_5554","name":"安徽电信宽带缴费（淮南）"},{"code":"I1_3600_5555","name":"安徽电信宽带缴费（马鞍山）"},{"code":"I1_3600_5556","name":"安徽电信宽带缴费（安庆）"},{"code":"I1_3600_5557","name":"安徽电信宽带缴费（宿州）"},{"code":"I1_3600_5558","name":"安徽电信宽带缴费（阜阳）"},{"code":"I1_3600_5559","name":"安徽电信宽带缴费（黄山）"},{"code":"I1_3600_5560","name":"安徽电信宽带缴费（亳州）"},{"code":"I1_3600_5561","name":"安徽电信宽带缴费（淮北）"},{"code":"I1_3600_5562","name":"安徽电信宽带缴费（铜陵）"},{"code":"I1_3600_5563","name":"安徽电信宽带缴费（宣城）"},{"code":"I1_3600_5564","name":"安徽电信宽带缴费（六安）"},{"code":"I1_3600_5566","name":"安徽电信宽带缴费（池州）"}]},{"code":"S0_3600","name":"税费","type":"20","categories":[{"code":"S0_3600_ACP01","name":"安徽国税"}]}]

Answer 1

这种比较复杂的json，许多库都不好解析，最后我是用gson来解析的。帮你写好了，你自己试试。
如果没有gson库可以到这里下载
http://download.csdn.net/detail/supolovedn/9349263

首先写一个类 TestJsonFromObject.java
public class TestJsonFromObject {
public String code;
public String name;
public String type;

  List<categoriesItem> categories;

  class categoriesItem { 
    public String code; 
    public String name; 
  } 

}

在需要解析的地方写
Gson gson = new Gson();
List ps = gson.fromJson(mJson, new TypeToken>(){}.getType());
用for循环就可以变量list的元素了。