Loading images in background to optimize the loading in ios

Question

I am trying to optimize the load in my application, in fact, I have a lot of images that loaded in my application, and I spend a lot of time waiting for a view controller to ope

Answer 1

You can try something like this!....

 dispatch_queue_t checkInQueueForPostImage = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);

                        dispatch_async(checkInQueueForPostImage, ^{
                            UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:postAndCheckInDetails.postImageURL]]];

                            dispatch_sync(dispatch_get_main_queue(), ^{
                                if (image!=nil) {
                                    [uploadImage setImage:image];
                                }

                                [cell setNeedsLayout];
                            });
                        });