SharePreference工具类-优快云博客

本文链接：https://blog.youkuaiyun.com/cxscxs123cxs/article/details/53762181

本文介绍了一个用于简化SharePreference操作的工具类，包括初始化方法及如何存储和获取各种类型的数据，如字符串、整数、浮点数等，并提供了对象和集合的序列化存储方案。

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/**
 * SharePreference工具类 
 * 使用之前应先inital 
 * 将inital放到application中，
 * 程序中直接使用即可
 * 
 * 
 */
public class SharePreferenceUtils {

   public static final int DEFAULT_VALUE = 0;
   private static SharePreferenceUtils sharePreferenceUtils;
   private SharedPreferences mSharedPreferences;
   private static Context mContext;

   public SharePreferenceUtils() {

   }

   public static void init(Context context) {
      if (context == null) {
         return;
      }
      if (sharePreferenceUtils == null) {
         sharePreferenceUtils = new SharePreferenceUtils();
         sharePreferenceUtils.mSharedPreferences = context
               .getSharedPreferences(context.getPackageName(),
                     Context.MODE_PRIVATE);
      }

   }

   public static void putString(String key, String value) {
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.putString(key, value);
      editor.commit();
   }

   public static void putInt(String key, int value) {
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.putInt(key, value);
      editor.commit();
   }

   public static void putFloat(String key, float value) {
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.putFloat(key, value);
      editor.commit();
   }

   public static void putBoolean(String key, boolean value) {
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.putBoolean(key, value);
      editor.commit();
   }
   public static boolean getBoolean(String key, boolean value) {
      return sharePreferenceUtils.mSharedPreferences.getBoolean(key,value);
   }
   public static void putLong(String key, long value) {
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.putLong(key, value);
      editor.commit();
   }

   public static void putStringSet(String key, Set value) {
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.putStringSet(key, value);
      editor.commit();
   }

   public static void putObject(String key, Object value) {
      if (value == null) {
         return;
      }
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.putString(key, JsonUtil.objetcToJson(value));
      editor.commit();
   }

   public static int getInt(String key) {
      return sharePreferenceUtils.mSharedPreferences.getInt(key,
            DEFAULT_VALUE);
   }

   public static String getString(String key) {
      return sharePreferenceUtils.mSharedPreferences.getString(key, null);
   }

   public static long getLong(String key) {
      return sharePreferenceUtils.mSharedPreferences.getLong(key,
            DEFAULT_VALUE);
   }

   public static float getFloat(String key) {
      return sharePreferenceUtils.mSharedPreferences.getFloat(key,
            DEFAULT_VALUE);
   }

   public static Set<String> getStringSet(String key) {
      return sharePreferenceUtils.mSharedPreferences.getStringSet(key, null);
   }

   public static <T> T getObject(String key, Class<T> clazz) {
      String jsonValue = sharePreferenceUtils.mSharedPreferences.getString(
            key, null);
      if (jsonValue == null || "".equals(jsonValue)) {
         return null;
      }
      return (T) JsonUtil.jsonToObject(jsonValue, clazz);
   }

   public static <T> T getList(String key, TypeToken<T> token) {
      String jsonValue = sharePreferenceUtils.mSharedPreferences.getString(
            key, null);
      if (jsonValue == null || "".equals(jsonValue)) {
         return null;
      }
      return (T) JsonUtil.jsonToList(jsonValue,token);
   }

   public static void remove(String key) {
      Editor editor = sharePreferenceUtils.mSharedPreferences.edit();
      editor.remove(key);
      editor.commit();
   }


   public static SharedPreferences getSharePreference() {
      return sharePreferenceUtils.mSharedPreferences;
   }
   private static void checkInit() throws Exception {
      if (sharePreferenceUtils == null
            || sharePreferenceUtils.mSharedPreferences == null) {
         throw new Exception("SharePreferenceUtils未初始化，请先初始化！");
      }
   }
   /**
    * 存储对象
    * @param key
    * @param object
    */
   public static void saveSharePerfence(String key, Object object){
      putObject(key, object);
   }
   public static <T> Object getSharePerfence(String key, Class<T> clazz){
      return getObject(key, clazz);
   }



}