SharedPreferences存储 list map

本文主要是介绍SharedPreferences存储 list map，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

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;  } 

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