Android笔记—通过SharedPreferences将List<Map<String, String>>进行存储

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懒得写了，查看个这个，复用轮子了，原文：http://blog.csdn.net/yijianhoan/article/details/44671171

其实归根到底还是将List<Map<String, String>>转成Json格式的字符串，然后通过SharedPreferences进行存储，方法如下：

1、保存方法

/** * 使用SharedPreferences存储List<Map<String, String>> *     存入 * @param context * @param key * @param datas */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<Map.Entry<String, String>> iterator = itemMap.entrySet().iterator();        JSONObject object = new JSONObject();        while (iterator.hasNext()) {            Map.Entry<String, String> entry = iterator.next();            try {                object.put(entry.getKey(), entry.getValue());            } catch (JSONException e) {                e.printStackTrace();            }        }        mJsonArray.put(object);    }    SharedPreferences sp = context.getSharedPreferences("finals", Context.MODE_PRIVATE);    SharedPreferences.Editor editor = sp.edit();    editor.putString(key, mJsonArray.toString());    editor.commit();}

2、取出方法

/** * 使用SharedPreferences存储List<Map<String, String>> *     取出 * @param context * @param key * @return */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) {        e.printStackTrace();    }    return datas;}

只要调用这两个方法进行存储和取出即可。

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