在collectionView中加载图像

Question

Each UITableViewCell contains a UICollectionView . Having trouble figuring out why some UICollectionViewCell images are not showing up. I'm using SDWebImage library to load images. The method - (void)sd_setImageWithURL:(NSURL *)url calls [self sd_cancelCurrentImageLoad]; . I think cancelling the previous request is the problem, but read somewhere that will create a race condition. Problem doesnt happen for every UITableViewCell , and if I tap on cell for details and go back, the images fill in. Perhaps I need to reload data somewhere. Any tips on how to solve this?

Answer 1

if you try to image fatch from server to try this.

#import "UIImageView+WebCache.h"

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
NewProfileCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];


[cell.img_user_image sd_setImageWithURL:[NSURL URLWithString:[mutDict valueForKey:@"UserImageURL"][indexPath.row]] placeholderImage:[UIImage imageNamed:@"No_IMAGE_PLACE"]];

return cell;
}

Answer 2

Try it:

- (void)prepareForReuse
{
    [super prepareForReuse];
    [self.imageView cancelCurrentImageLoad];
    [self.imageView setImage:[UIImage imageNamed:@""] forState:UIControlStateNormal]; // Placeholder image
}