I’m having some troubles trying to save a singleton object to the iPhone disk.

Question

Asked: June 2, 20262026-06-02T17:07:07+00:00 2026-06-02T17:07:07+00:00

The object is a collection of 2 arrays, which contain the faved posts and faced jobs.
Basically –> Favorites = arrayOfFavedPosts + arrayOfFavedJobs

Now I am trying to save the Favorites object, so that the once faved posts or jobs can be read from the disk.

Error:

2012-04-26 14:56:56.957 FirstDesign_test2[666:10403] -[Post encodeWithCoder:]: unrecognized selector sent to instance 0x6c74a80

This error fires up when I call the saveToDisk method when I add a new object to one of the arrays…

Some help would be really appreciated!

Thanks in Advance

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Editorial Team · Answer 1 · 2026-06-02T17:07:09+00:00

Editorial Team

You need to adopt and implement the NSCoding protocol on your Post class (and presumably on your Job class).

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