[myclass encodeWithCoder:]: unrecognized selector sent to instance error while using NSUserDefaults

Question

I'm trying to fill a dictionary with values from restkit. I save the dictionary using NSUserDefaults in my restEngine.m

 NSDictionary *dict = [mappingResult dictionary];

                   [[NSUserDefaults standardUserDefaults] setObject:[NSKeyedArchiver archivedDataWithRootObject:dict] forKey:kPopulateTableView ];
                   [[NSUserDefaults standardUserDefaults] synchronize];

When I build the app, it breaks with the error message:

"[myclass encodeWithCoder:]: unrecognized selector sent to instance"

What am I doing wrong here?

Daij-Djan · Accepted Answer · 2013-06-26 20:06:27Z

5

it seems that in your NSDictionary dict you save objects that are not encodable.
BUT
Only encodable objects can be used with an archiver.

To be encodable they must implement the NSCoding protocol

SO: myclass needs to implement NSCoding

For further info read the "Archives and Serializations Programming Guide"

edited Jun 26, 2013 at 20:06

answered Jun 26, 2013 at 19:58

Daij-Djan

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2 Comments

owensco Over a year ago

So where should I implement my class using NSCoding? In my rest engine or where the class is actually defined? Sorry Im not familiar with NSCoding

Daij-Djan Over a year ago

in your class.. it is a protocol that defines 2? methods that you HAVE to provide then

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