ASIHTTPRequest is not updating the DownloadProgress Delegate - iphone

Question

I am using ASIHTTPRequest to download a file locally to the iDevice.
My download code is as follows
ASIHTTPRequest *download = [ASIHTTPRequest requestWithURL: videoUrl];
[download setCompletionBlock:^{
NSLog(#"Download Success");
// other code
}];
[download setFailedBlock:^{
NSLog(#"Download Failed");
// other code
}];
[download setDownloadProgressDelegate: [item progressDelegate]];
[download startAsynchronous];
NSLog(#"Start Download of %#", [item name]);
The object item holds a reference to a UIProgressView It is show on the screen but never updated.
In an attempt to debug, I subclassed UIProgressView and added the following log
- (void)setProgress:(float)newProgress {
NSLog(#"Current Progress : %f", newProgress);
[super setProgress: newProgress];
}
My Console now shows the progress going from 0.0 to 1.0 over ~50 iterations (nice!) but the uiProgressView doesnt change and at the end the NSLog show 0.5 the default setting for the progress view.
Anyone have an Idea what is happening?
EDIT
UIProgressView is accessed with this
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView cellForRowAtIndexPath: indexPath];
id progressView = [cell viewWithTag:VideoDetailProgressView];
[VideoDownloadManager queueDownloadOfVideo:video progressDelegate: progressView];
}
I have stepped through and watched it appears to keep the correct reference to the UIProgressView throughout
Edit
TableView Methods
// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *detailCellIdentifier = #"VideoDetailCell";
static NSString *categoryCellIdentifier = #"VideoCategoryCell";
UITableViewCell *cell = nil;
bool isCategorical = [[self.videoList objectAtIndex: indexPath.row] objectForKey:#"parentName"];
if(isCategorical)
{
cell = [tableView dequeueReusableCellWithIdentifier:categoryCellIdentifier];
}
else
{
cell = [tableView dequeueReusableCellWithIdentifier:detailCellIdentifier];
}
if (cell == nil && !isCategorical) {
[[NSBundle mainBundle] loadNibNamed:#"VideoDetailCell" owner:self options:nil];
cell = self.videoDetailCell;
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(5.0, 10.0, 46.0, 46.0)];
[cell addSubview:imageView];
imageView.hidden = !self.canEdit;
imageView.tag = VideoDetailsFavoriteButton;
[imageView release];
self.videoDetailCell = nil;
}
else if(cell == nil && isCategorical)
{
//Different cell
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:categoryCellIdentifier] autorelease];
}
[cell setBackgroundColor:[UIColor clearColor]];
return cell;
}
// Display customization
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
NSDictionary *object = [self.videoList objectAtIndex:indexPath.row];
bool isCategorical = [[self.videoList objectAtIndex: indexPath.row] objectForKey:#"parentName"];
if(isCategorical) {
cell.textLabel.textColor = [UIColor whiteColor];
cell.textLabel.text = [object objectForKey:#"name"];
NSUInteger videoCount = [[Videos sharedVideos] countById: [object objectForKey:#"name"]];
cell.detailTextLabel.textColor = [UIColor whiteColor];
cell.detailTextLabel.text = [NSString stringWithFormat: #"%d videos", videoCount];
}
else
{
[[cell viewWithTag:VideoDetailCellTitle] setValue:[object objectForKey:#"name"] forKey:#"text"];
[[cell viewWithTag:VideoDetailCellSubtitle] setValue:[object objectForKey:#"dateAdded"] forKey:#"text"];
[[cell viewWithTag:VideoDetailCellDuration] setValue:[object objectForKey:#"duration"] forKey:#"text"];
UIHTTPImageView *asyncImage = (UIHTTPImageView *)[cell viewWithTag:VideoDetailCellImage];
NSURL *thumbUrl = [NSURL URLWithString:[NSString stringWithFormat: #"%#%#", kRootUrlPath, [object objectForKey:#"image"]]];
[asyncImage setImageWithURL:thumbUrl placeholderImage: [UIImage imageNamed: kLoadingImage]];
asyncImage.clipsToBounds = YES;
UIImageView *editButton = (UIImageView *)[cell viewWithTag:VideoDetailsFavoriteButton];
if ([VideoDownloadManager isQueued: [object objectForKey: #"name"]]) {
[[cell viewWithTag:VideoDetailCellSubtitle] setHidden:YES];
[[cell viewWithTag:VideoDetailProgressView] setHidden:NO];
} else {
[[cell viewWithTag:VideoDetailCellSubtitle] setHidden:NO];
[[cell viewWithTag:VideoDetailProgressView] setHidden:YES];
}
if ([VideoDownloadManager isFavorites: [object objectForKey: #"name"]] || [VideoDownloadManager isQueued: [object objectForKey: #"name"]]) {
editButton.image = [UIImage imageNamed: kFavoritesHighlighted];
} else {
editButton.image = [UIImage imageNamed: kFavoritesEmpty];
}
}
}

Answer 1

Can you check if the update is made in the main thread? (it should be the case if you're using the latest version of ASIHTTPRequest)
NSLog(#"Current Progress : %f (main thread=%d)", newProgress, [NSThread isMainThread]);
If it doesn't help, can you show the code that is using the UIProgressView in the view?

Answer 2

Thanks for everyones help. You guys guided me to then answer. My cell was not correctly being assigned a reuseIdentifier
this was causing the whole issue.