How to create global enum

问题:

How to access enum through all classes. Let me explain:

enum
{
   BottomBackButtonNav = 0,
   BottomNextButtonNav,
   BottomSliderIncreaseNav,
   BottomSliderDcreaseNav,
   PageSwipeLeftNav,
   PageSwipeRightNav,
   NavFromThumbnailView,
   NavFromTOCView,
} NavigationType;

This enum is defined in my MainViewController's header and want to use it to all my views. How to do this, please guide.

Regards.

回答1:

You can define it in an header file (.h) and import it in each module you need

回答2:

You can also create a header file that holds all your enums and then import this header file in your projects .pch file (usually located in your Supporting Files folder).

---

This Prefix header uses the contents of this file and includes them on every source file. So it pretty much imports whatever headers that are set in the #ifdef __OBJC__ section to every file during compile time.