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Mayur Prajapati - MeProgrammer
Mayur Prajapati - MeProgrammer

Reputation: 5592

Display Image to UIImageView which comes from Server

I am getting strange issue please if get help from anyone then it'll be appreciated.

My problem is i am getting only Image names from server through web service for ex: abc.png.

Now that image need to be attached with the static URL & than it will be used to display to UIImageView.

I have used this code:

for (int i = 0; i<[[myDic valueForKey:@"posts"] count]; i++)
{
    NSData *bgImageData = nil;
    if ([[[[myDic valueForKey:@"posts"] objectAtIndex:i] valueForKey:@"post"] valueForKey:@"video_image"] == [NSNull null])
    {
        bgImageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://drupal.org/files/issues/no-pre.png"]];
    }
    else
    {
        bgImageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://sitebildz.com/application/document/video/%@",[[[[myDic valueForKey:@"posts"] objectAtIndex:i] valueForKey:@"post"] valueForKey:@"video_image"]]]];
    }
    [arrVideoImage addObject:bgImageData];
}

For Display in Table :

cell.imageView.image = [UIImage imageWithData:[arrVideoImage objectAtIndex:indexPath.row]];

But don't know why its not working.

Thanks.

Upvotes: 0

Views: 1143

Answers (3)

Manish Agrawal
Manish Agrawal

Reputation: 11026

you cab use https://github.com/enormego/EGOImageLoading/tree/master/EGOImageView which will download the image from server in async way and display once it completely downloaded from server. It also cache that image so that multiple request can be avoided and it enhances the system.

Upvotes: 1

TheTiger
TheTiger

Reputation: 13354

You're doing wrong. See you're making NSData in loop. Do you think it will wait until image is download from server ??? Nope it will not wait. So in this case you're adding empty NSData.

Would be better to use SDWebImage.
1. Download it
2. Import it in your project
3. build project (success)
4. Import #import "UIImageView+WebCache.h" in your ViewController class

[cell.imageView setImageWithURL:imageURL placeholderImage:[UIImage imageNamed:@"placeHolderImageName"]];

Upvotes: 1

Alexis C.
Alexis C.

Reputation: 4918

As commented The Tiger, your best choice would be to use an external library like SDWebImage which can handle download, caching and display of online images. Here is an example using this framework :

[imageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"]
               placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

You can also use blocks to insert logic once an image finished loading :

[cell.imageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"]
           placeholderImage:[UIImage imageNamed:@"placeholder.png"]
                  completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType) {... completion code here ...}];

Upvotes: 2

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