objc_setAssociatedObject.swift

objc_setAssociatedObject.swift

var imageRequestOperationKey = "imageRequestOperationPointer"
let imageRequestOperationPointer = UnsafePointer<String>(COpaquePointer(&imageRequestOperationKey))

extension UIImageView {
    
    func bw_imageRequestOperation() -> AFHTTPRequestOperation {
        return objc_getAssociatedObject(self, imageRequestOperationPointer) as AFHTTPRequestOperation
    }
    
    func bw_setImageRequestOperation(operation :AFHTTPRequestOperation?) {
        
        objc_setAssociatedObject(self, imageRequestOperationPointer, operation, UInt(OBJC_ASSOCIATION_RETAIN_NONATOMIC))
    }
}