Custom UITableViewCell with UIImageView not showing image - ios

Question

I have a custom cell with UIImageView, and it is not showing the image. I have tried setting image to default cell.imageView.image property, and it works just fine, but doesn't work with my custom ImageView.
I load my custom Cell from Xib, and I believe it has to do with lazy loading of UIImageView. How do I make it work?
Here is my code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"MyCell";
DVGTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.tag = indexPath.row;
if (self.loader.parsedData[indexPath.row] != nil)
{
cell.imageCustom.image = nil;
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
dispatch_async(queue, ^(void) {
NSString *url = [self.loader.parsedData[indexPath.row] objectForKey:#"imageLR"];
NSData *imageData = nil;
if ([self.cache objectForKey:url] != nil)
{
imageData = [self.cache objectForKey:url];
}
else
{
imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:url]];
[self.cache setObject:imageData forKey:[self.loader.parsedData[indexPath.row] objectForKey:#"imageLR"]];
}
dispatch_async(dispatch_get_main_queue(), ^{
if (cell.tag == indexPath.row) {
UIImage *image = [[UIImage alloc] initWithData:imageData];
cell.imageCustom.image = image;
[cell setNeedsLayout];
}
});
});
}
return cell;
}

Answer 1

I usually do Lazy loading for ImageViews with this piece of code, hope it helps:
- (void) loadImageForImageView:(UIImageView *)theImageView WithURL:(NSURL *)url {
NSOperationQueue *queue = [NSOperationQueue new];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReturnCacheDataElseLoad timeoutInterval:3.0];
[NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *reponse, NSData *data, NSError *error) {
UIImage *image = [UIImage imageWithData:data];
dispatch_async(dispatch_get_main_queue(), ^{
theImageView.image = image;
for (UIActivityIndicatorView *spinner in theImageView.subviews) {
[spinner removeFromSuperview];
break;
}
});
}];
}
In your cellForRowAtIndexPath:
UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
[spinner setColor:[UIColor darkGrayColor]];
spinner.frame = CGRectMake(130 , 53, 20, 20);
[spinner startAnimating];
[imageCell addSubview:spinner];
[self loadImageForImageView:imageCell WithURL:imageURL];
Where imageCell is your UIImageView.