public void saveInfo(Context context, String key, List<Map<String, String>> datas) {
		JSONArray mJsonArray = new JSONArray();
		for (int i = 0; i < datas.size(); i++) {
			Map<String, String> itemMap = datas.get(i);
			Iterator<Entry<String, String>> iterator = itemMap.entrySet().iterator();

			JSONObject object = new JSONObject();

			while (iterator.hasNext()) {
				Entry<String, String> entry = iterator.next();
				try {
					object.put(entry.getKey(), entry.getValue());
				} catch (JSONException e) {

				}
			}
			mJsonArray.put(object);
		}

		SharedPreferences sp = context.getSharedPreferences("finals", Context.MODE_PRIVATE);
		Editor editor = sp.edit();
		editor.putString(key, mJsonArray.toString());
		editor.commit();
	}

	public List<Map<String, String>> getInfo(Context context, String key) {
		List<Map<String, String>> datas = new ArrayList<Map<String, String>>();
		SharedPreferences sp = context.getSharedPreferences("finals", Context.MODE_PRIVATE);
		String result = sp.getString(key, "");
		try {
			JSONArray array = new JSONArray(result);
			for (int i = 0; i < array.length(); i++) {
				JSONObject itemObject = array.getJSONObject(i);
				Map<String, String> itemMap = new HashMap<String, String>();
				JSONArray names = itemObject.names();
				if (names != null) {
					for (int j = 0; j < names.length(); j++) {
						String name = names.getString(j);
						String value = itemObject.getString(name);
						itemMap.put(name, value);
					}
				}
				datas.add(itemMap);
			}
		} catch (JSONException e) {

		}

		return datas;
	}