Question

I am trying to store an NSMutableArray of images using persistive storage but it is not storing it

here is my code

[imagingList addObject:image ];  //image is of type UIImage
imagingHistory=[NSUserDefaults standardUserDefaults];
[imagingHistory        setObject:imagingList          forKey:@"imaging history"  ];

and in my view did load I write

 imagingList      = [[NSUserDefaults standardUserDefaults] mutableArrayValueForKey:@"imaging history"  ];

when I re-load the application the list of objects is set back to Zero

am I missing something ?

Answer 1

You can’t save a UIImage directly in the user defaults. You have to convert it to an NSData first. Just by chance, when I was looking for the NSUserDefaults reference page to answer this question, a found a tutorial on how to do exactly what you want.