将所有枚举类型放在带有其他常量的头文件中的应用程序被认为是一种不好的做法吗？

There are some enum types in my iOS objective-C app that are used in different classes, for them I guess its fine to put them in a constants.h file, but what about others that are not necessarily used in multiple classes? would it be considered a bad practice? There are some enum types in my iOS objective-C