ios 仅使用 Kingfisher 库获取 UIImage
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Get UIImage only with Kingfisher library
提问by Patonz
I need to get a UIImage only instead of loading a normal UIImageView with Kingfisher library
我只需要获取 UIImage 而不是使用Kingfisher 库加载普通的 UIImageView
To realize it I implemented a workaround with UIImageView:
为了实现它，我使用 UIImageView 实现了一个解决方法：
let imageView = UIImageView()
imageView.kf_setImageWithURL(NSURL(string: cpa.imageName)!, placeholderImage: nil,
optionsInfo: [.Transition(ImageTransition.Fade(1))],
progressBlock: { receivedSize, totalSize in
print("\(receivedSize)/\(totalSize)")
},
completionHandler: { image, error, cacheType, imageURL in
anView!.image = image //anView IS NOT an UIImageView
anView!.frame.size = CGSize(width: 15.0, height: 15.0)
print("Finished")
})
This code works perfectly, but I would like to do it in a cleaner way. Is there a method in this library to get an UIImage only? Async and cached
这段代码工作得很好，但我想以更简洁的方式来完成。这个库中是否有一种方法可以只获取 UIImage？异步和缓存
回答by onevcat
You could use the retrieveImage(with:options:progressBlock: completionHandler:)method of KingfisherManagerfor this.
为此，您可以使用 的retrieveImage(with:options:progressBlock: completionHandler:)方法KingfisherManager。
Maybe something like this:
也许是这样的：
KingfisherManager.shared.retrieveImage(with: url, options: nil, progressBlock: nil, completionHandler: { image, error, cacheType, imageURL in
print(image)
})
回答by Hardik Thakkar
This is latest syntax to download image in kingFisher 5 (Tested in swift 4.2)
这是在 kingFisher 5 中下载图像的最新语法（在 swift 4.2 中测试）
func downloadImage(`with` urlString : String){
guard let url = URL.init(string: urlString) else {
return
}
let resource = ImageResource(downloadURL: url)
KingfisherManager.shared.retrieveImage(with: resource, options: nil, progressBlock: nil) { result in
switch result {
case .success(let value):
print("Image: \(value.image). Got from: \(value.cacheType)")
case .failure(let error):
print("Error: \(error)")
}
}
}
How to call above function
如何调用上面的函数
self.downloadImage(with: imageURL) //replace with your image url
回答by Pawe?
With the new Swift 3 version you can use ImageDownloader :
使用新的 Swift 3 版本，您可以使用 ImageDownloader ：
ImageDownloader.default.downloadImage(with: url, options: [], progressBlock: nil) {
(image, error, url, data) in
print("Downloaded Image: \(image)")
}
ImageDownloaderis a part of Kingfisher so don't forget to import Kingfisher.
ImageDownloader是 Kingfisher 的一部分，所以不要忘记import Kingfisher。
回答by nsc9012
Another way in Kingfisher 5:
Kingfisher 5 中的另一种方式：
KingfisherManager.shared.retrieveImage(with: url) { result in
let image = try? result.get().image
if let image = image {
...
}
}
回答by Quyen Anh Nguyen
In Kingfisher 5
在翠鸟5
imageView.kf.setImage(with: url) { result in
switch result {
case .success(let value):
print("Image: \(value.image). Got from: \(value.cacheType)")
case .failure(let error):
print("Error: \(error)")
}
}
see more: https://github.com/onevcat/Kingfisher/wiki/Kingfisher-5.0-Migration-Guide
查看更多：https: //github.com/onevcat/Kingfisher/wiki/Kingfisher-5.0-Migration-Guide
回答by Shakeel Ahmed
Swift 5
斯威夫特 5
let url = URL(string: USER_IMAGE_PATH + "\(arrGuserpic[index])")
cell.imgv.kf.setImage(with: url, placeholder: nil, options: nil, progressBlock: nil, completionHandler: { image, error, cacheType, imageURL in
if (image != nil){
cell.imgv.image = image
}
else {
cell.imgv.image = UIImage.init(named: "user")
}
})
