Comments on: iPhone – Downloading an image asynchronously. Revisited!

By: Why aren’t UItableViewCell images loading until scrolling?

Why aren’t UItableViewCell images loading until scrolling? — Tue, 22 Nov 2011 03:08:15 +0000

[...] code downloads images asynchronously using InternetImage in the tableview: cellForRowAtIndexPath: method by initializing a IntentImage with initWithURL and [...]

By: Pawan Gera

Pawan Gera — Thu, 12 May 2011 10:23:41 +0000

Hi,

I want to download zip file from the web into iphone application and the size of zip file in 1 gb. I am not able to figure the right way to do this on web. Please do the needful.

Thanks and Regards
Pawan Gera

By: Marc

Marc — Tue, 09 Nov 2010 23:45:53 +0000

Thanks for posting this. It has been really helpful.

How could I adapt the code to pull a URL stored in my db instead of hard coding one in as per your example? I am building a news app that pulls data, including image URL, from an XML feed into core data and so want to update the URL used with the relevant cell in the db.

Thanks.

By: eBuildy

eBuildy — Wed, 25 Aug 2010 12:15:37 +0000

You can also use the magic TTImageView component from the Three20 library (the iOS framework built by the Facebook team)…

By: Richard Fliam

Richard Fliam — Mon, 21 Jun 2010 05:11:08 +0000

Old post to comment on but the leak occurs when the image reaches a retain count of zero and dealloc is called… before abortDownload or connectionDidFinishLoading: is called. This causes a general leak of downLoadedImage and m_requestData. Adding [self abortDownload]; to the dealloc method should fix this.

By: coder

coder — Wed, 19 May 2010 09:23:11 +0000

yes there is memory leak about InternetImage.
i just put a UIbutton in view.
i pasted your code buttons event:
[self downloadImageFromInternet:@"http://www.google.se/intl/en_com/images/logo_plain.png"];
there is no memory leak when you first tap the button.
but when you tap again
there are memory leaks:
InternetImage
UIImage

i also changed your connection code:

NSURL *url = [NSURL URLWithString:ImageUrl];
NSURLRequest *imageRequest = [[NSURLRequest alloc] initWithURL: url];
imageConnection = [[[NSURLConnection alloc] initWithRequest:imageRequest delegate:self] autorelease];

how can i solve it? i want to refresh the UIImage when the user taps button…
thanx…

By: Rutger Bevers

Rutger Bevers — Tue, 06 Apr 2010 21:38:33 +0000

I installed the example application on my iPhone.
It works most of the times, but sometimes the image is never loaded although I have a perfect connection.

You can test this by setting the iPhone into airplane mode and then turn it of. Now immediately when you get connection to the network start the application. The image will never load…

By: NIVETHA

NIVETHA — Tue, 25 Aug 2009 04:39:34 +0000

thank u

By: NIVETHA

NIVETHA — Tue, 25 Aug 2009 04:39:15 +0000

Really very nice post…… it helped me very much

By: Björn Sållarp

Björn Sållarp — Sun, 24 May 2009 05:54:03 +0000

Hello Cedric,

1. In the demo app I allocate a single InternetImage, there is no previous instance to release.
2. Same with ImageConnection.

I suspect the memory leaks are in your own implementation.