Loading image from URL on iPhone

Question

I have no idea why this isn't working.

NSData *data = [NSData dataWithContentsOfURL:place.iconData];
UIImage *image = [UIImage imageWithData:data];
[imageView setImage:image];

imageView is an IBOutlet hooked up through IB. place.iconData is http://maps.gstatic.com/mapfiles/place_api/icons/generic_business-71.png. For some reason, though, it won't load. Any help is much appreciated.

Remember that loading an image using this method loads synchronously and will block your view controller while the image is loading over network, which will typically be a very noticeable delay. Consider using NSURLConnecion — Johnus
– Johnus, Commented Jul 25, 2011 at 4:30
Yeah, I've been reading about that, but I don't quite understand. Is there a link or example that's really clear that you know of, so I can implement that better? — Mason
– Mason, Commented Jul 25, 2011 at 4:47
This link seems ok. markj.net/iphone-asynchronous-table-image . Note that he limits image size to 2K. — Johnus
– Johnus, Commented Jul 25, 2011 at 6:07

Perception · Accepted Answer · 2011-07-25 04:16:26Z

3

Try this:

NSURL *url = [NSURL URLWithString: @"http://maps.gstatic.com/mapfiles/place_api/icons/generic_business-71.png"];

NSData *data = [NSData dataWithContentsOfURL:url];
UIImage *image = [UIImage imageWithData:data];
[imageView setImage:image]; 
//or imageView.Image=image;

edited Jul 25, 2011 at 4:16

Perception

80.8k19 gold badges190 silver badges197 bronze badges

answered Jul 25, 2011 at 4:10

Philemon philip Kunjumon

1,4221 gold badge15 silver badges35 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Johnus Over a year ago

That should work, try it with a different image URL. Otherwise check your views and that you don't have any nil values.

Zhang · Accepted Answer · 2011-07-25 13:29:05Z

2

Is your data being freed before it got assigned?

Maybe try manually allocating memory for the NSData:

NSData *data = [[NSData alloc] initWithContentsOfURL:place.iconData];
UIImage *image = [[UIImage alloc] initWithData:data];
[imageView setImage:image];

[data release];
[image release];

answered Jul 25, 2011 at 13:29

Zhang

11.6k7 gold badges61 silver badges91 bronze badges

2 Comments

Mason Over a year ago

No, it isn't. In the end I gave up on IB and programatically created the UIImageview, and it worked fine. Go figure.

Zhang Over a year ago

Can't go wrong with coding over using Interface Builder :P Sometimes when you move things around in Interface Builder, it breaks the connection between views and controllers. Perhaps your view controller's UIImageView object connection is broken? :D

Cœur · Accepted Answer · 2017-07-01 06:18:11Z

1

You need to use NSURL. Follow this url http://iosdevelopertips.com/cocoa/download-and-create-an-image-from-a-url.html

edited Jul 1, 2017 at 6:18

Cœur

39k25 gold badges207 silver badges282 bronze badges

answered Jul 25, 2011 at 3:59

Rahul Vyas

28.9k50 gold badges185 silver badges261 bronze badges

Collectives™ on Stack Overflow

Loading image from URL on iPhone

3 Answers 3

1 Comment

2 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related