How to declare enum to pass from one object to another

Question

I have two objects: NavButton, visible on each ViewController and a particular ViewController. NavButton should know, which kind of ViewController is asking for it and hide unneeded buttons. I consider implementing this as passing an enum from ViewController to NavButton.
I have two questions on this:
1. Where should I declare enum? 2. How to make enum visible in all of the ViewControllers, so, each VC could access NavButton's property as: self.navButton.kind = bigButton;

Put the enum in a .h file that each view controller can import. — rmaddy, Aug 07 '14 at 22:55
What template should I use to create that .h file? As usual class? Is it OK to put that file to prefix.pch? — Richard Topchii, Aug 07 '14 at 22:57
Template? You don't need a template. Just a clean .h file with the enum. — rmaddy, Aug 07 '14 at 22:58
See also: http://stackoverflow.com/questions/7912222/objective-c-typedef-enum-in-global-constants-file — Wain, Aug 07 '14 at 23:00

score 1 · Accepted Answer · answered Aug 07 '14 at 23:02

1

Just use the C header template + the nsenum macro expansion and voila!

//
//  Header.h
//  Test
//
//  Created by Yours Truly on 8/7/14.
//  Copyright (c) 2014 Adam Christopher Smith. All rights reserved.
//

#ifndef Test_Header_h
#define Test_Header_h

typedef NS_ENUM(NSUInteger, MyEnum) {
    MyEnumValueA,
    MyEnumValueB,
    MyEnumValueC,
};

#endif

If I have a lot of these and they are used by different parts of the app, I tend to stick quite a few into one file (maybe, Types.h) and put that into my pch. Quite acceptable IMO.

answered Aug 07 '14 at 23:02

Acey

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And how can I define a property of this enum in object? – Richard Topchii Aug 07 '14 at 23:09
1

@property (nonatomic) MyEnum myEnumValue; – Acey Aug 07 '14 at 23:18

How to declare enum to pass from one object to another

1 Answers1