使用sharepreferce记录数组数据

使用sharepreferce记录数组数据

  /**
         *
         * sharepreference纪录news数据
         *
         *
         */
        private static final String   name="newsdata";

      //保存
        public void setDataList(String tag,List<News> datalist) {
            SharedPreferences sp=mactivity.getSharedPreferences(name,Context.MODE_PRIVATE);
                        if (null == datalist|| datalist.size() <= 0)
                                return;

                        Gson gson = new Gson();
                        String strJson = gson.toJson(datalist);
                        sp.edit().putString(tag,strJson).commit();
                }

        //获取
       public List<News> getDataList(String tag) {
           SharedPreferences sp=mactivity.getSharedPreferences(name,Context.MODE_PRIVATE);
                        String strJson = sp.getString(tag, null);
                        if (null == strJson) {
                                return null;
                        }
                        Gson gson = new Gson();
                        List<News> datalist= gson.fromJson(strJson,
                                        new TypeToken<List<News>>() {
                                        }.getType());
                        return datalist;
                }