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翠鸟加载缓存镜像

kingfisher swift ios

0

coinhndp · 技术社区 · 7 年前

我的API返回两种类型的照片:小照片和大照片

if hasCacheSmallPhoto {
  imageView.kf.setImage(with: bigImageUrl, placeholder: cacheImage)
} else {
  imageView.kf.setImage(with: bigImageUrl, placeholder: defaultPlaceHolderImage)
}

我怎样才能用翠鸟正确地实现这一点呢

1 回复 | 直到 7 年前

1

0

Bhavesh.iosDev 7 年前

您需要先检查小图像是否由翠鸟缓存缓存。

    if ImageCache.default.isCached(forKey:smallImageUrl) {

     ImageCache.default.retrieveImage(forKey: smallImageUrl) { result in
    switch result {
    case .success(let value):

       imageView.kf.setImage(with: bigImageUrl, placeholder: value.image)

    case .failure(let error):
        print(error)
    }
}   
}
else {
     imageView.image = defaultPlaceHolderImage
     imageView.kf.setImage(with: smallImageUrl) { result in
    // `result` is either a `.success(RetrieveImageResult)` or a `.failure(KingfisherError)`
    switch result {
    case .success(let value):
        // The image was set to image view:
        imageView.kf.setImage(with: bigImageUrl, placeholder: value.image)


        // The source object which contains information like `url`.
        print(value.source)

    case .failure(let error):
        print(error) // The error happens
    }
}
}