SharedPreferences存储 list map

1通过SharedPreferences将List<Map<String, String>>进行存储

保存数据

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

2 取数据

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;
  }

2通过SharedPreferences将Map<String, String>进行存储

1 先保存成json

public static JSONObject getMaptojson(Map<String, String> map) {
        Map<String, String> params = new HashMap<String, String>();
        JSONObject json = new JSONObject();
        try {
            Iterator iter = map.entrySet().iterator();
            while (iter.hasNext()) {
                Map.Entry entry = (Map.Entry) iter.next();
                Object key = entry.getKey().toString();
                Object val = entry.getValue().toString();
                json.put((String) key, val);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return json;

    }

 public static Map<String, String> gettojsontoMap(String json) {
        Map maps = (Map) JSON.parse(json + "");
        return maps;
    }

3通过SharedPreferences将List<String>进行存储

/** 
     * 存储List<String> 
  
     */  
    public static void putStrListValue(Context context, String key,  
            List<String> strList) {  
        if (null == strList) {  
            return;  
        }  
        // 保存之前先清理已经存在的数据，保证数据的唯一性  
        removeStrList(context, key);  
        int size = strList.size();  
        putIntValue(context, key + "size", size);  
        for (int i = 0; i < size; i++) {  
            putStringValue(context, key + i, strList.get(i));  
        }  
    }  
  
  
    /** 
     * 取出List<String> 
  
     */  
    public static List<String> getStrListValue(Context context, String key) {  
        List<String> strList = new ArrayList<String>();  
        int size = getIntValue(context, key + "size", 0);  
        //Log.d("sp", "" + size);  
        for (int i = 0; i < size; i++) {  
            strList.add(getStringValue(context, key + i, null));  
        }  
        return strList;  
    }