bug fix

python/tools/garble/string_garble.py

@@ -6,14 +6,14 @@ import base64
 
 class StringGarble:
 
-    used_names = []
+    __used_names = []
 
     # 随机串(全小写加下划线，避免和activity混淆重复)
     def __gen_rand_str(self):
         result = ""
         while len(result) == 0 or result in self.__used_names:
             result = ''.join(random.sample(
-                "abcdefghijklmnopqrstuvwxyz", random.randint(5, 10)))
+                "abcdefghijklmnopqrstuvwxyz", random.randint(5, 15)))
         self.__used_names.append(result)
         return result