Load UIImage from URL in iOS

Question

I am trying to load a UIImage from its URL with completionand placeholder image , but neither the UIImage nor the placeholder UIImage are loaded.

Here is my code:

  NSURL *url = [NSURL URLWithString:@"http://assets.gearlive.com/tvenvy/blogimages/stewiegriffin.jpg"];
  NSURLRequest *request = [NSURLRequest requestWithURL:url];

  [self.imageView setImageWithURLRequest:request placeholderImage:[UIImage imageNamed:@"bg.png"]

      success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) {
          imageView.image = image;
      } 
      failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) {}
   ];

Your code seems correct. Just set the placeholder directly `self.imageView.image = [UIImage imageNamed:@"bg.png"];` to make sure your image view is visible and setting the image works.. — Swapnil Luktuke, May 07 '15 at 09:21
If setting the image directly does not work, set image view's background color `self.imageView.backgroundColor = [UIColor redColor];` and run the app to make sure the image view is acually visible on the screen.. — Swapnil Luktuke, May 07 '15 at 09:23

Ashok Londhe · Answer 1 · 2017-10-13T06:52:26.690

Try this code to get image...

Code:

NSURL *url = [NSURL URLWithString:@"http://www.fnordware.com/superpng/pnggrad16rgb.png"];

NSData *data = [NSData dataWithContentsOfURL:url];
UIImage *image = [UIImage imageWithData:data];

[self.imageview1 setImage:image];

Note: i have used test url. you can use your url.

Update : Swift 3.0 Code :

let url = URL(string: "http://www.fnordware.com/superpng/pnggrad16rgb.png")
    do {
        let  data = try Data(contentsOf: url!)
        var image = UIImage(data: data)
        self.imageView.image = image
        print(image)
    } catch {

    }

Note : In Xcode version 7.1 and above you need to set ATS (App Transport Security). To set ATS you need write below code in info.plist file. Make sure url of image should not be nil.

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

Tested this in Playgrounds, converted to swift 3, and works perfectly! Thanks! — Simon, Dec 04 '16 at 21:31
@Simon Thanks for your feedback i have updated the answer and also added code for swift. — Ashok Londhe, Oct 27 '17 at 13:10

Akshay Karanth · Accepted Answer · 2015-05-08T06:46:28.273

13

Use AFnetworking where you can set placeholder image also if the url is not correct. This is more efficient when you are loading images in a tableview or a collection view.

Import UIImageView+AFNetworking.h

#import "UIImageView+AFNetworking.h"

and us the following code:

NSString *url1=@"http://www.fnordware.com/superpng/pnggrad16rgb.png";
[self.image setImageWithURL:[NSURL URLWithString:url1] placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

You can download it from gitHub

edited May 08 '15 at 06:46

answered May 07 '15 at 11:53

Akshay Karanth

347
1
13

I had used SDImage, never knew AF could do that too...Thanks – Nikhil Manapure May 04 '17 at 08:13
can i able to use image url as placeholder image ? – Jignesh B Jun 22 '17 at 08:56
For any future devs, the import is no longer necessary. – C-H-E-F Jan 26 '18 at 01:45

score 3 · Answer 3 · answered May 07 '15 at 10:36

3

Check out AsyncImageView. Its the best async image loader AFAIK. all you have to do is set the image URL to the imageview and the rest is taken care of. including caching.

answered May 07 '15 at 10:36

ShahiM

3,179
1
33
58

1

this one is very easy to use – thanhbinh84 Aug 13 '16 at 03:56

Ahd Radwan · Answer 4 · 2015-05-07T12:39:22.770

1

I found the problem

My code is working correctly.

The problem was somewhere in my code , the ImageView was nil. Thanks all

edited May 07 '15 at 12:39

answered May 07 '15 at 12:23

Ahd Radwan

1,090
4
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Load UIImage from URL in iOS

4 Answers4

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