Storing custom OrderedDictionary to NSUserDefaults

Question

I need to save the OrderedDictionary to NSUserDefaults.

I read here and in many other posts how to do it:

-(id)initWithCoder:(NSCoder *)decoder{
     if (self != nil){
         dictionary = [decoder decodeObjectForKey:@"dictionary"];
         array = [decoder decodeObjectForKey:@"array"];
     }
    return self;
}

-(void)encodeWithCoder:(NSCoder *)encoder{
    [encoder encodeObject: dictionary forKey:@"dictionary"];
    [encoder encodeObject: array forKey:@"array"];
}

I then call it like this:

 OrderedDictionary *od = [OrderedDictionary dictionaryWithDictionary:[businessInfo objectForKey:@"allowedStates"]];
    NSData *archivedObject = [NSKeyedArchiver archivedDataWithRootObject:od];
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:archivedObject forKey:@"allowedStates"];
    [defaults synchronize];

and unarchive it like this:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    NSData *archivedObject = [defaults objectForKey:@"allowedStates"];
    OrderedDictionary *countryStates = (OrderedDictionary *)[NSKeyedUnarchiver unarchiveObjectWithData:archivedObject];

I see that archivedObject is not empty, however countryStates is empty, although when I save it it's not empty.

How is it?

How can I archive successfully the OrderedDictionary?

EDITED

The method initWithCoder is being called, but not encodeWithCoder

countryStates is OrderedDictionary object (actually the allowedStates that was saved in the NSUsersDefaults — Dejell, Jul 15 '13 at 07:30
Try this: `id countryStates = [NSKeyedUnarchiver unarchiveObjectWithData:archivedObject];` and see if `countryStates` has any value and its type. — Eli Ganem, Jul 15 '13 at 07:39

score 1 · Answer 1 · answered Jul 15 '13 at 09:21

1

Make sure your class conforms to the <NSCoding> protocoll (so your class definition reads @interface OrderedDictionary <NSCoding>)
Else, the framework doesn't know it should call encodeWithCoder:

answered Jul 15 '13 at 09:21

Martin Ullrich

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How can I make sure that it conforms to NSCoding? – Dejell Jul 15 '13 at 09:48
I added so it looks like this @interface OrderedDictionary : NSMutableDictionary but still it doesn't help.. – Dejell Jul 15 '13 at 11:14

score 1 · Accepted Answer · edited May 23 '17 at 11:56

1

Please refer below link, may be will you get proper solution.

encodeWithCoder is not called in derived class of the NSMutableDictionary

When does encodeWithCoder get called?

Good Luck !!!!

edited May 23 '17 at 11:56

Community

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answered Jul 18 '13 at 11:45

Dipak Narigara

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Storing custom OrderedDictionary to NSUserDefaults

2 Answers2