CODEWITHSUNDEEP
iosobjective-cuicollectionviewuicollectionviewcell
IndiaNasirJones
IndiaNasirJones

Reputation: 31

UICollectionView doesn't display any image

I'm trying to display image from documents directory in UICollectionView, everything works fine, but no image appears

- (void)viewDidLoad

{

    [super viewDidLoad];

    // Initialize recipe image array

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0];



    NSArray *dirContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectory error:nil];


    NSMutableArray *image = [NSMutableArray array];


    for (NSString *tString in dirContents) {

        if ([tString hasSuffix:@".png"]) {

            [image addObject:tString];


            listeImages = [NSArray arrayWithArray:image];


        }

    }


}


- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{

    return listeImages.count;



}


- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{

    static NSString *identifier = @"Cell";

    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];



    UIImageView *listeImageView = (UIImageView *)[cell viewWithTag:100];

    UILabel *LabelView = (UILabel *)[cell viewWithTag:110];

    LabelView.text = [listeImages objectAtIndex:indexPath.row];

    listeImageView.image = [UIImage imageNamed:[listeImages objectAtIndex:indexPath.row]];

   NSLog(@" List UIImageView listeImageView.image  %@",listeImageView.image);

cell.backgroundColor = [UIColor redColor];

  cell.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"photo-frame.png"]];



     NSLog(@" List NSArray *listeImages %@",listeImages);

    cell.tag = indexPath.row;

    return cell;

}

with this piece of code, displays the correct UICollectionView UILabel well but no image is displayed.

I use this line of code to store my image in listeImageView.image.

 UIImageView *listeImageView = (UIImageView *)[cell viewWithTag:100];
    listeImageView.image = [UIImage imageNamed:[listeImages objectAtIndex:indexPath.row]];

Here are the results of my NSLog:

2014-10-11 09:46:31.117 imgapp[2803:60b]  List NSArray *listeImages;  (
    "image10102014233607.png",
    "image10102014233616.png",
    "image10102014233627.png"
)
2014-10-11 09:46:31.158 imgapp[2803:60b]  List UIImageView listeImageView.image  (null)
2014-10-11 09:46:31.171 imgapp[2803:60b]  List UIImageView listeImageView.image  (null)
2014-10-11 09:46:31.178 imgapp[2803:60b]  List UIImageView listeImageView.image  (null)

any help will be appreciated.

Thanks

Upvotes: 0

Views: 663

Answers (4)

emma ray
emma ray

Reputation: 13620

You'd be much better off subclassing UICollectionViewCell, and setting up the subviews in a storyboard. Your code could be much cleaner this way:

static NSString *kCustomCellIdentifier = @"customcell";

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    MYAPPCustomCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:kCustomCellIdentifier forIndexPath:indexPath];

    // Load custom image
    NSString *imageName = [listeImages objectAtIndex:indexPath.row];
    if (imageName)
    {
        UIImage *image = [UIImage imageNamed:imageName];
        if (image)
        {
            cell.customImageView.image = image;
        }
        else
        {
            // Set an empty state here
            cell.customImageView.image = [UIImage imageNamed:@"errorImage.png"];
        }
    }

    return cell;
}

Upvotes: 0

Tanvi Jain
Tanvi Jain

Reputation: 937

Have u tried to give background color to cell instead of backgroundview.do that once if possible with same code of yours!

Or You can try like :-UIImageView *listeImageView = (UIImageView *)[cell viewWithTag:100]; [cell bringviewtoFront:listeImageView ];

Upvotes: 0

nikhil84
nikhil84

Reputation: 3207

You have below,

listeImageView.image = [UIImage imageNamed:[listeImages objectAtIndex:indexPath.row]];

But your doing,

  cell.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"photo-frame.png"]];

Why your not using your listeImageView as below:-

cell.backgroundView = listeImageView;

That should get you the image.

UPDATE :-

 for (NSString *tString in dirContents) {

    if ([tString hasSuffix:@".png"]) {

              **[image addObject:[UIImage imageWithContentsOfFile:tString] ];  //Do this as in below line you were not create a image object which you are trying to get.**

       //Also check your image array for object, that is it getting stored or not.
       //     [image addObject:tString];

    }

}

 listeImages = [NSArray arrayWithArray:image];  //Do this after you have added all objects in your image mutable array and not in for loop as this will initialise it many tiems depending on your loop run count.

Upvotes: 1

TMob
TMob

Reputation: 1278

You're not adding your listeImageView to anything. Try it with

[cell addSubview:listeImageView];

or if you really want it to be the backgroundView

cell.backgroundView = listeImageView;

But it'd be much cleaner if you create a custom UICollectionViewCell-class where you can define what content this cell has.

Upvotes: 0

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