UITableView Inactive Until Scroll iPhone
- by dubbeat
HI,
I'm trying to find the cause of some annoying behaviour with my UITableView.
In each cell of my table (10 of them ) I asynchronously load an image. The problem is, is that if I don't touch the app at all the imageviews will permanently show a loading icon. However as soon as I scroll a cell off the screen and back on again the image shows straight away.
What could be causing this "stuck in the mud" behaviour? Is there a way to force whatever gets called when the list is scrolled to make the needed update happen?
#define ASYNC_IMAGE_TAG 9999
#define LABEL_TAG 8888
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
PromoListItem *promo = [promoList objectAtIndex:indexPath.row];
static NSString *CellIdentifier = @"Cell";
AsyncImageView *asyncImageView = nil;
UILabel *label = nil;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
CGRect frame;
frame.origin.x = 0;
frame.origin.y = 0;
frame.size.width = 100;
frame.size.height = 100;
asyncImageView = [[[AsyncImageView alloc] initWithFrame:frame] autorelease];
asyncImageView.tag = ASYNC_IMAGE_TAG;
[cell.contentView addSubview:asyncImageView];
frame.origin.x = 110;
frame.size.width =100;
label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.tag = LABEL_TAG;
[cell.contentView addSubview:label];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
} else {
asyncImageView = (AsyncImageView *) [cell.contentView viewWithTag:ASYNC_IMAGE_TAG];
label = (UILabel *) [cell.contentView viewWithTag:LABEL_TAG];
}
NSURL *url = [NSURL URLWithString:promo.imgurl];
[asyncImageView loadImageFromURL:url];
label.text = promo.artistname;
return cell;
}
