ImageDownloadRequestModifier (AnyModifier) を利用して URLRequest に変更を加えると良い。
var options: KingfisherOptionsInfo = [
.scaleFactor(UIScreen.main.scale),
.transition(ImageTransition.fade(0.35)),
]
let encodedAuth = …
let modifier: AnyModifier = AnyModifier.init(modify: { (req: URLRequest) -> URLRequest? in
var r = req
r.setValue("Basic \(encodedAuth)", forHTTPHeaderField: "Authorization")
return r
})
options.append(.requestModifier(modifier))
imageView.kf.setImage(with: URL,
placeholder: placeholder,
options: options,
progressBlock: nil,
completionHandler: nil)