LibraryViewController

@implementation LibraryViewController
@synthesize dataController = _dataController;

- (id)init{
    UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
    self = [super initWithCollectionViewLayout:layout];
    [self.collectionView setCollectionViewLayout:layout];
    [self.collectionView setBounds:CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
    self.dataController = [[LibraryDataController alloc] init];
    [self.collectionView registerClass:[LibraryCell class] forCellWithReuseIdentifier:@"libraryCell"];
    return self;
}
- (void)viewWillAppear:(BOOL)animated
{
    [self.navigationController setNavigationBarHidden:YES animated:animated];
    [super viewWillAppear:animated];
    [self.collectionView reloadData];
}

- (void)viewWillDisappear:(BOOL)animated
{
    [self.navigationController setNavigationBarHidden:NO animated:animated];
    [super viewWillDisappear:animated];
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void)addPhoto:(NSString *)imagePath day:(NSInteger)day month:(NSInteger)month year:(NSInteger)year{
    [self.dataController addPhoto:imagePath day:day month:month year:year];
}

-(NSInteger)dataCount{
    return [self.dataController listCount];
}

#pragma mark -
#pragma mark UICollectionViewDataSource

-(NSInteger)numberOfSectionsInCollectionView:
(UICollectionView *)collectionView
{
    return 1;
}

-(NSInteger)collectionView:(UICollectionView *)collectionView
    numberOfItemsInSection:(NSInteger)section
{
    return [self.dataController listCount];
}

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
    DetailViewController *detailView = [[DetailViewController alloc] init];
    NSLog(@"%d",indexPath.row);
    detailView.photoIndex = indexPath.row;
    [self presentModalViewController:detailView animated:YES];
}

- (CGSize)collectionView:(UICollectionView *)collectionView
                  layout:(UICollectionViewLayout*)collectionViewLayout
  sizeForItemAtIndexPath:(NSIndexPath *)indexPath {

    NSLog(@"SETTING SIZE FOR ITEM AT INDEX %d", indexPath.row);
    return CGSizeMake(80, 120);
}

- (UIEdgeInsets)collectionView:
(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
    return UIEdgeInsetsMake(10, 10, 10, 10);
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section{
    return 20.0;
}

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
                 cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    LibraryCell *myCell = [self.collectionView dequeueReusableCellWithReuseIdentifier:@"libraryCell" forIndexPath:indexPath];

    UIImage *image;
    int row = [indexPath row];

    NSString *photoPath = [self.dataController PhotoOrNotesAtIndex:row photoOrNotes:@"photo"];

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //create an array and store result of our search for the documents directory in it

    NSString *documentsDirectory = [paths objectAtIndex:0]; //create NSString object, that holds our exact path to the documents directory

    NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:photoPath]; //add our image to the path

    image = [UIImage imageWithContentsOfFile:fullPath];

    if(image)
        NSLog(@"success");

    myCell.imageView.image = nil;
    myCell.imageView.image = image;

    return myCell;
}

@end