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iOS

Posted by NAUSHAD DARUWALLA
NAUSHAD DARUWALLA
1,587 Points

Saving and retrieving data from NSUserDefaults

Hello all, I am trying to save three different types of objects, one of which is an NSString and two custom classes. The method that is posted below used to work in IOS 7 but no longer works and I am trying to figure out why. Also, the calls to self.___array are 3 different global NSMutableArrays. What is wrong with the current implementation and what do I do to fix it? Thanks in advance guys1

-(void)saveUserData { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

if ([self.classHierarchyDelegateMutableArray count]>0)
{

    for (NSInteger i = 0; i<[self.homeworkItemsArray count]; i++)
    {
        homeworkObject* homeworkItem = [self.homeworkItemsArray objectAtIndex:i];
        NSData* homeworkData = [NSKeyedArchiver archivedDataWithRootObject:homeworkItem];
        [self.homeworkItemsArray replaceObjectAtIndex:i withObject:homeworkData];
    }

    for (NSInteger i = 0; i<[self.upcomingEventItems count]; i++)
    {
        upcomingEventObject* upcomingEvent = [self.upcomingEventItems objectAtIndex:i];
        NSData* upcomingEventData = [NSKeyedArchiver archivedDataWithRootObject:upcomingEvent];
        [self.upcomingEventItems replaceObjectAtIndex:i withObject:upcomingEventData];
    }
    NSData* homeworkItemsArray = [NSKeyedArchiver archivedDataWithRootObject:self.homeworkItemsArray];
    NSData* upcomingEventsArray = [NSKeyedArchiver archivedDataWithRootObject:self.upcomingEventItems];

    [defaults setObject:self.classHierarchyDelegateMutableArray forKey:@"classHierarchyArray"];
    [defaults setObject:homeworkItemsArray forKey:@"homeworkItemsArray"];
    [defaults setObject:upcomingEventsArray forKey:@"upcomingEventItemsArray"];
}
else
{
    [defaults setObject:nil forKey:@"classHierarchyArray"];
    [defaults setObject:nil forKey:@"homeworkItemsArray"];
    [defaults setObject:nil forKey:@"upcomingEventItemsArray"];
}

[defaults synchronize];

}

-(void)loadUserData { if ([[NSUserDefaults standardUserDefaults]objectForKey:@"classHierarchyArray"]) { self.classHierarchyDelegateMutableArray = [[NSUserDefaults standardUserDefaults]objectForKey:@"classHierarchyArray"];

    NSMutableArray* homeworkArray = [NSKeyedUnarchiver unarchiveObjectWithData:[[NSUserDefaults standardUserDefaults]objectForKey:@"homeworkItemsArray"]];

    for (NSInteger i = 0; i<[homeworkArray count]; i++)
    {
        NSData* homeworkData = [homeworkArray objectAtIndex:i];

        homeworkObject* homeworkItem = [NSKeyedUnarchiver unarchiveObjectWithData:homeworkData];

        [self.homeworkItemsArray addObject:homeworkItem];
    }

    NSMutableArray* upcomingEventsArray = [NSKeyedUnarchiver unarchiveObjectWithData:[[NSUserDefaults standardUserDefaults]objectForKey:@"upcomingEventItemsArray"]];

    for (NSInteger i = 0; i<[upcomingEventsArray count]; i++)
    {
        NSData* upcomingEventsData = [upcomingEventsArray objectAtIndex:i];

        upcomingEventObject* upcomingEvent = [NSKeyedUnarchiver unarchiveObjectWithData:upcomingEventsData];

        [self.upcomingEventItems addObject:upcomingEvent];
    }

}

}