Checking SDWebImage if an image is cached using Swift: Ambiguous reference

Question

I am trying to find out if the image has already been cached using SDWebImage, but when I try to use this method, I get the error message "Ambiguous reference to the cachedIageExistsForURL element".

let bool = SDWebImageManager.cachedImageExistsForURL(imgURL)

I use Swift, and I have a bridge header to use the library.

Answer 1

cachedImageExistsForURLis not a class method in SDWebImageManager, it is an instance method that must be used in sharedInstance:

SDWebImageManager.sharedManager().cachedImageExistsForURL(imgURL)

Answer 2

how to achieve this in swift 4.2