JSON

1.内置Json

  

    private String json0 = "{"name":"hello json"}";

    private String jsonArray1 = "{"query":"Pizza","locations":[94043,90210]}";

    private String jsonArray2 = "{"number":[[zhangsan,133],[lisi,3234]]}";

    private String jsonArray3 = "{"mobile":[{"name":"android"},{"name":"iphone"}]}";

  try {
            JSONObject demoJson = new JSONObject(json0);
            String name = (String) demoJson.get("name");
            Log.i("name-->value：", name);

            JSONObject demoJson1 = new JSONObject(jsonArray1);
            String query = demoJson1.getString("query");

            Log.i("query-->value:", query);

            JSONArray locationArray = demoJson1.getJSONArray("locations");
            for (int i = 0; i < locationArray.length(); i++) {
                Log.i("location-->value：", String.valueOf(locationArray.getInt(i)));
            }

            JSONObject demoJson2 = new JSONObject(jsonArray2);

            JSONArray array = demoJson2.getJSONArray("number");
            for (int i = 0; i < array.length(); i++) {
                JSONArray tmp = array.getJSONArray(i);
                Log.i("嵌套数组-->value:", tmp.getString(0) + tmp.getInt(1));
            }

            JSONObject demoJson3 = new JSONObject(jsonArray3);
            JSONArray array1 = demoJson3.getJSONArray("mobile");
            for(int i =0;i<array1.length();i++){
               JSONObject object=  array1.getJSONObject(i);
                String innername = object.getString("name");
                Log.i("innername-->value:",innername);
            }

2. Gson 

  

package com.cmdi.layout;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import java.util.ArrayList;
import java.util.List;

/**
 * https://github.com/google/gson
 *
 * https://github.com/google/gson/blob/master/UserGuide.md
 * <p/>
 * Created by 1 on 2016/4/17.
 */
public class GsonDemo {

    public static void testGson() {

        String json = "{"name":"lili","age":18}";
        Gson gson = new Gson();
        Person person = gson.fromJson(json, Person.class);
        System.out.println(person.getName());


        ArrayList<Person> persons = new ArrayList<>();

        Person per = new Person();
        per.setAge(13);
        persons.add(per);
        String list2Josn = gson.toJson(persons);
        System.out.println(list2Josn);

        String s = "[{"name":"lili","age":18},{"name":"go","age":222}]";
        List<Person> retList = gson.fromJson(s, new TypeToken<List<Person>>() {
        }.getType());

        System.out.println(retList.get(0).getName());
        System.out.println(retList.size());
    }

}