Kingfisher and swift 3-无法使用url设置图片

Question

查看文档和迁移指南，我应该能够使用以下代码设置新的映像：

imageView.kf.setImage(with:url ...) 

但实际上我在库中找不到这个方法，我只看到：

imageView.kf.setImage(with:Resource... )

我不知道这个资源到底是如何工作的，因为我在文档中找不到任何东西。

Answer 1

Resource是一种协议。URL已经进行了扩展以符合此协议。所以你可以这样做：

let url = URL(string: ...)!
imageView.kf.setImage(with: url)

如果您希望对Kingfisher在其缓存中使用的密钥进行一些控制，可以使用ImageResource

let identifier = "..."
let url = URL(string: "http://example.com/images/identifier=\(identifier)")!
let resource = ImageResource(downloadURL: url, cacheKey: identifier)

imageView.kf.setImage(with: resource)

Answer 2

我用下面的代码修复了这个问题：

PhotoHelper.shared.imagePickedBlock = { [weak self] (image, url) in
      self?.imageView.kf.setImage(with: url, placeholder: image, options: nil, progressBlock: nil, completionHandler: { imageResult, error, type, cache in
        self?.imageView.image = image
      })
    }

PhotoHelper是原生图像拾取器上的包装器：

    func imagePickerController(_ picker: UIImagePickerController,     didFinishPickingMediaWithInfo info: [String : Any]) {
          currentVC.dismiss(animated: true, completion: {
            if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
              let url = info[UIImagePickerControllerReferenceURL] as! URL
              self.imagePickedBlock?(image, url)
             }
          })
      }

Answer 3

Swift 4.2的

import Kingfisher

extension UIImageView {
    func setImage(with urlString: String){
        guard let url = URL.init(string: urlString) else {
            return
        }
        let resource = ImageResource(downloadURL: url, cacheKey: urlString)
        var kf = self.kf
        kf.indicatorType = .activity
        self.kf.setImage(with: resource)
    }
}

如何使用

self.imgVw.setImage(with: your image url)