diff --git a/lib_face/src/main/java/com/sw/plate/utils/PrefUtils.java b/lib_face/src/main/java/com/sw/plate/utils/PrefUtils.java
index 946b0ad..d57c1d7 100644
--- a/lib_face/src/main/java/com/sw/plate/utils/PrefUtils.java
+++ b/lib_face/src/main/java/com/sw/plate/utils/PrefUtils.java
@@ -44,6 +44,18 @@ public class PrefUtils {
         sp.edit().putInt(key, value).commit();
     }
 
+    public static long getLong(Context ctx, String key, long defaultValue) {
+        SharedPreferences sp = ctx.getSharedPreferences(PREF_NAME,
+                Context.MODE_PRIVATE);
+        return sp.getLong(key, defaultValue);
+    }
+
+    public static void setLong(Context ctx, String key, long value) {
+        SharedPreferences sp = ctx.getSharedPreferences(PREF_NAME,
+                Context.MODE_PRIVATE);
+        sp.edit().putLong(key, value).commit();
+    }
+
     public static float getFloat(Context ctx, String key, float defaultValue) {
         SharedPreferences sp = ctx.getSharedPreferences(PREF_NAME,
                 Context.MODE_PRIVATE);