SDWebImage's sd_setImageWithURL crashes the application when trying to show 100 of images in view

Question

i am showing around 100 of the urls in my one screen asyncronusly in my button image with the SDWebImage.

i am facing issues with the memory load when i tried to show all the images from the url.

i have one UIScrollView and In that i have one UIImageView which has all the 100 Uibutton Added Dynamaically.

Now my requirement is when user Zoomed int he UIScrollView at certain Level i need to show image in UIbutton and when i start to show the Image from the server to that button with the following code its crashes witht he memory warning.

[btn sd_setImageWithURL:[NSURL URLWithString:busOwner.WhiteLargeLogoURL] forState:UIControlStateNormal placeholderImage:[UIImage imageNamed:placeHolderImage]];

can any one please let me know that how can i resolve this memory issues and can also show the images at same time to all the 100 buttons?

i have also tried to put uiiamgeView instead of uiButton and also i have tried to use

 dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0ul);
        dispatch_async(queue, ^{
            // Perform non main thread operation
            for (BusinessOwnerEntity *busOwner in arrBusOwner) {
                NSURL *url = [NSURL URLWithString:busOwner.WhiteLargeLogoURL];

                SDWebImageManager *manager = [SDWebImageManager sharedManager];

                [manager downloadImageWithURL:url options:SDWebImageProgressiveDownload progress:^(NSInteger receivedSize, NSInteger expectedSize) {

                    NSLog(@"REcieved File %ld",(long)receivedSize);

                } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {

                }];
            }
            dispatch_sync(dispatch_get_main_queue(), ^{
                // perform main thread operation
            });
        });

to download images before but its crashes here too..

Answer 1

Use SDWebImage callbacks to load your images in queue, not all at the same time.
It will reduce your memory consumption and avoid iOS to kill your app.

[manager downloadImageWithURL:url options:SDWebImageProgressiveDownload progress:^(NSInteger receivedSize, NSInteger expectedSize) {

                NSLog(@"REcieved File %ld",(long)receivedSize);

            } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
                       if ("are they less than 10 images loading?"){
                          [self startNewImageLoading];
                       }
            }];