diff --git a/plugins/Common.php b/plugins/Common.php
index 6fe3c11..5714635 100644
--- a/plugins/Common.php
+++ b/plugins/Common.php
@@ -222,7 +222,6 @@ Class Common {
         $dirs_after_delete = $friends_dirs;
         if (in_array($share_dir, $friends_dirs)) {
             $dirs_after_delete = array_diff($friends_dirs, array($share_dir));
-            $dirs_after_delete = array_values($dirs_after_delete);
         }else {
             return true;
         }
@@ -333,6 +332,16 @@ Class Common {
         return $username;
     }
 
+    public static function dictToArray($dict) {
+        $arr = array();
+
+        foreach($dict as $key => $value) {
+            array_push($arr, $value);
+        }
+
+        return $arr;
+    }
+
     //从自己的目录里获取收藏夹映射关系
     //返回：数组
     public static function getMyDirs($cellphone, $username){
@@ -351,7 +360,9 @@ Class Common {
             if (file_exists($cache_filename)) {
                 $mapContent = file_get_contents($cache_filename);
                 $map = json_decode($mapContent);
-                $map = array_values($map);
+                if (is_object($map)) {
+                    $map = self::dictToArray($map);
+                }
             }
         }