displaying images in rss as tableview cell image

[vamsi.ac]

i am left with only final task in my rss parser project.

my rss news has image in each view. but i am not able to display them as my table view cell image. please help me regarding this.

download my source code in here.
RssFun.zip

[Ice_2k]

create a custom UITableViewCell and do whatever you want inside it (like adding an image view)

[vamsi.ac]

Originally Posted by vamsi.ac

i am left with only final task in my rss parser project.

my rss news has image in each view. but i am not able to display them as my table view cell image. please help me regarding this.

download my source code in here.
RssFun.zip

Originally Posted by Ice_2k

create a custom UITableViewCell and do whatever you want inside it (like adding an image view)

i am using these methods to display image in cell, but my table view scroll speeed reduced drastically,,,

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
	UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"rssItemCell"];
	if(nil == cell){
		cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"rssItemCell"]autorelease];
	}
	cell = [self getCellContentView:@"rssItemCell"];
	UIImageView *tblimg=(UIImageView *)[cell viewWithTag:1];
	tblimg.tag=indexPath.row;
	
	NSString * mediaUrl = [[[[self rssParser]rssItems]objectAtIndex:indexPath.row]mediaUrl];
	if(nil != mediaUrl){
		NSData* imageData;
		[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
		@try {
			imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:mediaUrl]];
		}
		@catch (NSException * e) {
			//Some error while downloading data
		}
		@finally {
			UIImage * imageFromImageData = [[UIImage alloc] initWithData:imageData];
			[tblimg setImage:imageFromImageData];
			[imageData release];
			[imageFromImageData release];
		}
		[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
	}else{
		tblimg.image=[UIImage imageNamed:@"unknown.jpg"];
	}
	
	UILabel *titlelbl=[[UILabel alloc] initWithFrame:CGRectMake(90, 0, 250, 20)];
	UILabel *titledes=[[UILabel alloc] initWithFrame:CGRectMake(90, 30, 200, 40)];
	titlelbl.text=[[[[self rssParser]rssItems]objectAtIndex:indexPath.row]title];
	titledes.text= [[[[self rssParser]rssItems]objectAtIndex:indexPath.row]description];
	
	[cell.contentView addSubview:titlelbl];
	[cell.contentView addSubview:titledes];
	
	//cell.textLabel.text = [[[[self rssParser]rssItems]objectAtIndex:indexPath.row]title];
	//cell.detailTextLabel.text = [[[[self rssParser]rssItems]objectAtIndex:indexPath.row]description];
	

	
	cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
	return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	

	[[self appDelegate] setCurrentlySelectedBlogItem:[[[self rssParser]rssItems]objectAtIndex:indexPath.row]];
	[self.appDelegate loadNewsDetails];
	NSLog(@"vam");
	
	
	[tableView deselectRowAtIndexPath:indexPath animated:YES];

-(UITableViewCell *) getCellContentView:(NSString *)cellIdentifier 
{
	CGRect CellFrame = CGRectMake(0, 0, 300, 200);
	
	UITableViewCell *cell = [[[UITableViewCell alloc] initWithFrame:CellFrame reuseIdentifier:cellIdentifier] autorelease];
	cell.backgroundColor=[UIColor whiteColor];
    UIImageView *hello=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 80, 80)];
	hello.tag = 1;
	[cell.contentView addSubview:hello];
	[hello release];
	return cell;
}

how can i solve this

[Ice_2k]

That's because you're loading the image each time the system requires a cell. When you're scrolling, the system loads each image over and over again (and actually downloading it over and over again if I'm reading your code correctly). What I used to get around this issue was to cache all table view cells in an array and when the system requires it, I just return it, no initialization needed. Depending on how much data you're using, you might need to think about treating memory warnings and clearing the cache.

[sivaram]

Use this code,

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
	UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"rssItemCell"];
	if(nil == cell){
		cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"rssItemCell"]autorelease];
	}
	cell = [self getCellContentView:@"rssItemCell"];
	UIImageView *tblimg=(UIImageView *)[cell viewWithTag:1];
	tblimg.tag=indexPath.row;
	
	NSString * mediaUrl = [[[[self rssParser]rssItems]objectAtIndex:indexPath.row]mediaUrl];
	if(nil != mediaUrl){
		NSData* imageData;
		@try {
			imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:mediaUrl]];
		}
		@catch (NSException * e) {
			//Some error while downloading data
		}
		@finally {
			UIImage * imageFromImageData = [[UIImage alloc] initWithData:imageData];
			[tblimg setImage:imageFromImageData];
			[imageData release];
			[imageFromImageData release];
		}
	}else{
		tblimg.image=[UIImage imageNamed:@"unknown.jpg"];
	}
	
	UILabel *titlelbl=[[UILabel alloc] initWithFrame:CGRectMake(90, 0, 250, 20)];
	UILabel *titledes=[[UILabel alloc] initWithFrame:CGRectMake(90, 30, 200, 40)];
	titlelbl.text=[[[[self rssParser]rssItems]objectAtIndex:indexPath.row]title];
	titledes.text= [[[[self rssParser]rssItems]objectAtIndex:indexPath.row]description];
	
	[cell.contentView addSubview:titlelbl];
	[cell.contentView addSubview:titledes];
	


	
	cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
	return cell;
}

[vamsi.ac]

sivakumar, this is the same code u ve sent me before/?