ios – How you can replace my new code in order that I can unarchive information from my previous app within the App Retailer?

I’ve an app within the App Retailer that’s fairly previous. I’m attempting to write down an up to date model. My unique app archived and unarchived information as beneath. I can not work out find out how to now entry this information in my up to date app.

- (void)saveGG
{
    NSMutableData *information = [[NSMutableData alloc] init];
    NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:information];
    [archiver encodeObject:givens forKey:@"Present"];
    [archiver finishEncoding];
    [data writeToFile:[self dataFilePath] atomically:YES];
}

- (void)loadGG
{
    NSString *path = [self dataFilePath];
    if ([[NSFileManager defaultManager] fileExistsAtPath:path])
    {
        NSData *information = [[NSData alloc] initWithContentsOfFile:path];
        NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:information];
        items = [unarchiver decodeObjectForKey:@"Present"];
        [unarchiver finishDecoding];
    }
    else
    {
        items = [[NSMutableArray alloc] initWithCapacity:20];
    }