How to use NSCoding protocol with an enum?

Question

i have this enum:

typedef types {
    HBIntineraryTypeVisited = 0,
    HBIntineraryTypeUnvisited,
    HBIntineraryTypeUnknown,
    HBIntineraryTypeDeleted,
} HBIntineraryType;

and want to store it along with some other variables using the nscoding protocol

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super init];
    if (self) {
       _name = [aDecoder decodeObjectForKey:@"name"];
       // todo decode enum object
    }
}

- (void)encodeWithCoder:(NSCoder *)aCoder
{
    [aCoder encodeObject:_name forKey:@"name"];
    // todo encode enum object
}

What coder method do i use to decode and encode this kind of enum?

`decodeInt`/`encodeInt` (with some casting). – trojanfoe Jan 31 '13 at 09:53 — trojanfoe, Jan 31 '13 at 09:53

Jim · Accepted Answer · 2021-06-14T05:53:35.650

5

Generally speaking the representation of enums can vary. When working with Objective-C, you should use the NS_ENUM macro to be sure of which type is used to represent the enumeration. There's more background in this article.

edited Jun 14 '21 at 05:53

answered Jan 31 '13 at 09:55

Jim

72,985
14
101
108

3

This is the drawback of putting links as answer. You can never tell when they would start showing 404 :( – Kaunteya Jul 07 '17 at 15:11
1

Most blog articles from Big Nerd Ranch were moved. Here is the new url: https://www.bignerdranch.com/blog/enum-num-num/ – Pierre Jul 10 '17 at 14:04

How to use NSCoding protocol with an enum?

1 Answers1