NSFileManager *fileManager = [NSFileManager defaultManager];

     if([fileManager fileExistsAtPath:dataFilePath]) {
         // Load the array
         NSMutableArray *arrayFromDisk = [NSKeyedUnarchiver
                                          unarchiveObjectWithFile:dataFilePath];

         [Data sharedData].listOfItems = arrayFromDisk;

         NSLog(@"Loaded");
     }

@try {
    // Load the array
    NSMutableArray *arrayFromDisk = [NSKeyedUnarchiver
                                      unarchiveObjectWithFile:dataFilePath];

    [Data sharedData].listOfItems = arrayFromDisk;

    NSLog(@"Loaded");
}

@catch (NSException* e) {
    NSLog(@"Caught exception: %@", e);
}