Storing custom objects in an NSMutableArray in NSUserDefaults

Question

Possible Duplicate:
How to store custom objects in NSUserDefaults

HI, How can i store NSMutable array in NSUserDefaults? regards shishir

Answer 1

Storing the array is as easy as:

NSMutableArray *array = [NSMutableArray array];
[[NSUserDefaults standardUserDefaults] setObject:array forKey:@"array"];

but every object in the array must be a property-list object. That is, they must be one of:

• NSArray
• NSDictionary
• NSString
• NSData
• NSDate
• NSNumber

If you want to store instances of other classes in a property list, you must create methods to serialize/deserialize them to and from one of these types. Serializing objects to dictionaries is a common approach.

EDIT: Another approach is shown here: How to store custom objects in NSUserDefaults