ios - 使用 kingfisher lib 插入授权标头字段

Question

我正在使用 Kingfisher 显示来自 url 的图像，但我的端点需要一个 Authorization 标头。如何在 iOS 中将此类 url 与 Kingfisher 或 SDWebImage 一起使用？

Answer 1

使用 Kingfisher，您需要创建一个请求修饰符（类型为AnyModifier）并将其作为参数传递给方法的options一部分.kf.setImage，然后使用尾随闭包来实际设置图像。

例子：

import Kingfisher

let modifier = AnyModifier { request in
    var r = request
    // replace "Access-Token" with the field name you need, it's just an example
    r.setValue(<YOUR_TOKEN>, forHTTPHeaderField: "Access-Token")
    return r
}

let url = URL(string: <YOUR_URL>)

let iView = <YOUR_IMAGEVIEW>

iView.kf.setImage(with: url, options: [.requestModifier(modifier)]) { (image, error, type, url) in
    if error == nil && image != nil {
        // here the downloaded image is cached, now you need to set it to the imageView
        DispatchQueue.main.async {
            iView.image = image
        }
    } else {
        // handle the failure
        print(error)
    }
}

Answer 2

将自定义标头传递给所有图像请求的集中且可靠的方法。

所有setImage(with:,option:)调用都不需要选项

class TokenPlugin: ImageDownloadRequestModifier {
    let token:String

    init(token:String) {
        self.token = token
    }

    func modified(for request: URLRequest) -> URLRequest? {
        var request = request
        request.addValue(token, forHTTPHeaderField: "token")
        return request
    }
}

配置

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    KingfisherManager.shared.defaultOptions = [.requestModifier(TokenPlugin(token:"abcdef123456"))]
}

Answer 3

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    let modifier = AnyModifier { request in
        var req = request
        req.addValue("your_token", forHTTPHeaderField: "authorization")
        return req
    }
    
    
    KingfisherManager.shared.defaultOptions += [
        .requestModifier(modifier)
    ]}

Swift 5 + Kingfisher 7.1.2 在 Xcode 13.2.1 上测试