ArrayList 与 json字符串的相互转换

• ArrayList<T> 转换为json字符串

 private ArrayList<XXXResponse.XX.YY> mArrayList;

 String json = new Gson().toJson(mArrayList)

• json字符串 转换为 ArrayList<T>

ArrayList<XXXResponse.XX.YY> mArrayList = new Gson().fromJson(string, new TypeToken<ArrayList<XXXResponse.XX.YY>>(){}.getType());