Question

I used NSUserDefaults to save NSMutableDictionary. But when I am retrieving the value from the NSUserDefaults, I am unbale to modify/update the values of the NSMutableDictionary into which I am saving the values.

Need some suggestion on how to do so?

Answer 1

You always get non-mutable instances of NSDictionary from NSUserDefaults. To make them mutable, you need to do something like this:

dict = [[NSUserDefaults standardUserDefaults] objectForKey:@"myKey"];
myMutableDict = [dict mutableCopy];
// Note that the retain count is +1, so you will need to
// release or autorelease myMutableDict later on.