保存基本数据类型
public static boolean putData(String key, Object value) {
boolean result;
SharedPreferences.Editor editor = getPreference(ContextUtils.get()).edit();
String type = value.getClass().getSimpleName();
try {
switch (type) {
case "Boolean":
editor.putBoolean(key, (Boolean) value);
break;
case "Long":
editor.putLong(key, (Long) value);
break;
case "Float":
editor.putFloat(key, (Float) value);
break;
case "String":
editor.putString(key, (String) value);
break;
case "Integer":
editor.putInt(key, (Integer) value);
break;
default:
Gson gson = new Gson();
String json = gson.toJson(value);
editor.putString(key, json);
break;
}
result = true;
} catch (Exception e) {
result = false;
e.printStackTrace();
}
editor.apply();
return result;
}
public static Object getData(String key, Object defaultValue) {
Object result;
String type = defaultValue.getClass().getSimpleName();
SharedPreferences sp = getPreference(ContextUtils.get());
try {
switch (type) {
case "Boolean":
result = sp.getBoolean(key, (Boolean) defaultValue);
break;
case "Long":
result = sp.getLong(key, (Long) defaultValue);
break;
case "Float":
result = sp.getFloat(key, (Float) defaultValue);
break;
case "String":
result = sp.getString(key, (String) defaultValue);
break;
case "Integer":
result = sp.getInt(key, (Integer) defaultValue);
break;
default:
Gson gson = new Gson();
String json = sp.getString(key, "");
if (!json.equals("") && json.length() > 0) {
result = gson.fromJson(json, defaultValue.getClass());
} else {
result = defaultValue;
}
break;
}
} catch (Exception e) {
result = null;
e.printStackTrace();
}
return result;
}
保存列表
/**
* 用于保存集合
*
* @param key key
* @param list 集合数据
* @return 保存结果
*/
public static <T> boolean putListData(String key, List<T> list) {
boolean result;
String type = list.get(0).getClass().getSimpleName();
SharedPreferences.Editor editor = getPreference(ContextUtils.get()).edit();
JsonArray array = new JsonArray();
try {
switch (type) {
case "Boolean":
for (int i = 0; i < list.size(); i++) {
array.add((Boolean) list.get(i));
}
break;
case "Long":
for (int i = 0; i < list.size(); i++) {
array.add((Long) list.get(i));
}
break;
case "Float":
for (int i = 0; i < list.size(); i++) {
array.add((Float) list.get(i));
}
break;
case "String":
for (int i = 0; i < list.size(); i++) {
array.add((String) list.get(i));
}
break;
case "Integer":
for (int i = 0; i < list.size(); i++) {
array.add((Integer) list.get(i));
}
break;
default:
Gson gson = new Gson();
for (int i = 0; i < list.size(); i++) {
JsonElement obj = gson.toJsonTree(list.get(i));
array.add(obj);
}
break;
}
editor.putString(key, array.toString());
result = true;
} catch (Exception e) {
result = false;
e.printStackTrace();
}
editor.apply();
return result;
}
/**
* 获取保存的List
*
* @param key key
* @return 对应的Lis集合
*/
public static <T> List<T> getListData(String key, Class<T> cls) {
List<T> list = new ArrayList<>();
String json = getPreference(ContextUtils.get()).getString(key, "");
if (!json.equals("") && json.length() > 0) {
Gson gson = new Gson();
JsonArray array = new JsonParser().parse(json).getAsJsonArray();
for (JsonElement elem : array) {
list.add(gson.fromJson(elem, cls));
}
}
return list;
}
保存Hashmap
public static void putHashMapData(String key, Map<String, Integer> datas) {
JSONArray mJsonArray = new JSONArray();
Iterator<Map.Entry<String, Integer>> iterator = datas.entrySet().iterator();
JSONObject object = new JSONObject();
while (iterator.hasNext()) {
Map.Entry<String, Integer> entry = iterator.next();
try {
object.put(entry.getKey(), entry.getValue());
} catch (JSONException e) {
}
}
mJsonArray.put(object);
SharedPreferences.Editor editor = getPreference(ContextUtils.get()).edit();
editor.putString(key, mJsonArray.toString());
editor.commit();
}
public static HashMap<String, Integer> getHashMapData(String key) {
HashMap<String, Integer> datas = new HashMap<>();
SharedPreferences sp = getPreference(ContextUtils.get());
String result = sp.getString(key, "");
YxLog.d(TAG, "getHashMapData --- result = " + result);
try {
JSONArray array = new JSONArray(result);
YxLog.d(TAG, "getHashMapData --- array.length() = " + array.length());
for (int i = 0; i < array.length(); i++) {
JSONObject itemObject = array.getJSONObject(i);
JSONArray names = itemObject.names();
if (names != null) {
YxLog.d(TAG, "getHashMapData --- names.length() = " + names.length());
for (int j = 0; j < names.length(); j++) {
String name = names.getString(j);
Integer value = itemObject.getInt(name);
datas.put(name, value);
}
}
}
} catch (JSONException e) {
YxLog.e(TAG, "getHashMapData --- err = " + e.getMessage());
}
return datas;
}
读取json文件列表
public static String getJsonfromAsset(String fileName) {
YxLog.d(TAG, "getJson --- fileName = " + fileName);
StringBuilder stringBuilder = new StringBuilder();
try {
AssetManager assetManager = ContextUtils.get().getAssets();
BufferedReader bf = new BufferedReader(new InputStreamReader(assetManager.open(fileName)));
String line;
while ((line = bf.readLine()) != null) {
stringBuilder.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
YxLog.d(TAG, "getJson --- stringBuilder.toString() = \n" + stringBuilder.toString());
return stringBuilder.toString();
}
public static <T> ArrayList<T> getDataListFromString(String jsonString, Class<T> classOfT, Type type) {
YxLog.d(TAG, "getDataListFromString --- jsonString = " + jsonString);
ArrayList<T> dataList = null;
if ((jsonString == null) || (jsonString.trim().length() == 0)) {
YxLog.e(TAG, "getDataListFromString --- jsonString is null or size is 0.");
return dataList;
}
Gson gson = new Gson();
try {
dataList = gson.fromJson(jsonString, type);
} catch (JsonSyntaxException e) {
YxLog.e(TAG, "getDataListFromString --- err: " + e.getMessage());
e.printStackTrace();
} catch (Exception e) {
YxLog.e(TAG, "getDataListFromString --- err: " + e.getMessage());
e.printStackTrace();
}
return dataList;
}
Processed:
0.009, SQL:
9
