When I declare the SDWebImageCompletionBlock, it throws this error before compiling "Use of undeclared type type 'SDWebImageCompletionBlock':When I declare the SDWebImageCompletionBlock, i
When I declare the SDWebImageCompletionBlock, it throws this error before compiling "Use of undeclared type type 'SDWebImageCompletionBlock':When I declare the SDWebImageCompletionBlock, i