NSUserDefaults custom objects

gistfile1.m

@implementation NSUserDefaults (CustomClassSaving)
 
-(void) setCustomObject:(id<NSCoding>)object forKey:(NSString*)key
{
   NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:object];
   
   [self setObject:encodedObject forKey:key];
}
 
-(id<NSCoding>) customObjectForKey:(NSString*)key
{
   NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
   NSData *encodedObject = [defaults objectForKey:key];
 
   id<NSCoding> returnObject = nil;
   
   if(encodedObject)
   {
      returnObject = [NSKeyedUnarchiver unarchiveObjectWithData:encodedObject];
   }
   
   return returnObject;
}
 
@end