UICollectionView Crash?

Question

I'm trying to use a UICollectionView in collaboration with a UICollectionViewCell to display thumbnails of images. The UICollectionViewCell 's used in my app are custom (simplistic) subclasses:

#import "MemeCell.h"

@implementation MemeCell

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {

}
return self;
}

-(void)setThumb:(UIImage *)image {
    if (_thumb != image) {
        _thumb = image;
    }

    _imageThumb.image = _thumb;
}

@end

And in the File's Owner of my UICollectionView , I use:

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

    static BOOL nibLoaded = NO;

if (!nibLoaded) {
    UINib *cellNib = [UINib nibWithNibName:@"MemeCell" bundle:nil];
    [_collectionView registerNib:cellNib forCellWithReuseIdentifier:@"MemeCell"];
    nibLoaded = YES;
}

MemeCell *cell = [cv dequeueReusableCellWithReuseIdentifier:@"MemeCell" forIndexPath:indexPath];

NSString *path = [_imageThumbs objectAtIndex:indexPath.section];
UIImage *thumb = [UIImage imageNamed:path];
[cell setThumb:thumb];

return cell;
}

to return a cell. The view works fine when it is first presented, but after dismissing itself from it's delegate calling [self dismissViewControllerAnimated:YES completion:nil] , it cannot be presented again without crashing with a

2013-03-10 22:11:35.448 CapifyPro[21115:907] -[UICollectionViewCell setThumb:]: unrecognized selector sent to instance 0x1e593320
2013-03-10 22:11:35.450 CapifyPro[21115:907] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UICollectionViewCell setThumb:]: unrecognized selector sent to instance 0x1e593320'

Can anyone provide insight?

Answer 1

If use use UICollectionViewCell by XIB or storyBoardCell. simple drag drop your imageThumb imageView to MemeCell.h. Delete your setter inside MemeCell.m. Then set in dequence:

MemeCell *cell = (MemeCell*) [cv dequeueReusableCellWithReuseIdentifier:@"MemeCell" forIndexPath:indexPath];
cell.imageThumb.image = [UIImage imageNamed:path]

In the case MemeCell no Xib. please init and add imageThumb as subview of memeCell.contentView.

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
     self.imageThumb = [[UIImageView alloc] initWithFrame:self.frame];
     [self.contentView addSubviews:self.imageThumb];

}
return self;
}

*Edit: If you just store your thumbImage, don't display, just declare in Cell.h, don't need to rewrite setter.

property(strong,nonomatic) UIImage *thumbImage;